Home

ringtoets-requirements-and

1. 5 3 1 2 Key data water defence This comprise all key data related to the water defence geometry and properties Ringtoets Requirements and Functional Design 71 of 127 1207804 001 DSC 0002 16 May 2013 final Figure 5 6 Data Classes for hydraulic key data and boundary conditions The classes have the following meaning DeltaModel Container of all key data such as soil profiles dike lines and revetment location and properties DikeLine A dike line is a backbone of a dike and applicable for all failure mechanisms The user can select points along the dike line to view properties such as a name Points have global XYZ coordinates and local L coordinates along dike line Locations can have name labels or L coordinate indications km pole NL naam locatie km palen CharacteristicLine Line of points of the same characteristic tyoe These points are used to derive the characteristic points per schematized 72 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Nd characterstic lines with SurfaceLines perpendicular to dike line WindFetch Fetch data per wind direction FetchLength Fetch data per wind direction and layer Revetment Revetment zones are visible in the map editor and cross section editor Revetment zones are defined by two paths in the horizontal plane indicating the left and right border of the revetment zone The distance is related to crest axis Such
2. Ringtoets Requirements and Functional Design 69 of 127 1207804 001 DSC 0002 16 May 2013 final po materia o O DeterministicSoilPro Soil profile which defines the appearance of a soil in a deterministic way file this means it is exactly defined which soil is present at which location StochasticSoilProfile Collection of deterministic soil profiles with each soil profile having a certain probability SoilProfile1 D Describes a sub soil divided in horizontal layers SoilLayer1D Horizontal layer of a soil with indication of top and bottom level resulting in layer thickness and layer position The bottom level is always equal to the top level of the underlying soil layer Piping indication upper subsoil layer shallow aquifer at dike shallow aquifer next to dike second deep aquifer NL naam ligging bovenkant laagdikten type voor piping deklaag ondiepe watervoerende laag onder de dijk ondiepe watervoerende laag buiten de dijk tweede diepe watervoerende laag ligging laagdikte Soil Contains all soil properties such as mass density dry and wet piping parameters damping factor is aquifer or aquitard and stability parameters NL soortelijke dichtheid parameters voor pipingmodel bijv erosiebestendigheid toplaag weerstandsco ffici nt onderlaag afhankelijk van ligging Stabiliteits parameters SoilProfile2D Describes a sub soil where the appearance of the soil depends on the horizontal coordinate So
3. The form also pops up if one of the items in the Project Start Form is missing of an existing project After the users confirms these data the data are imported and saved immediately If the project exists already the user is prompted to overwrite When starting the application the user is prompted with a form to create a new project or to open a previous project This form is merged with the previous form See UC 5 UC 6 and UC 7 5 4 2 Automatic Locking of data The Ringtoets application allows concurrent use of one project database But users are not allowed to edit the same data at the same time or to alter data which is in use for a running assessment calculation see UC 18 Therefore locks are used A user requests a lock for a certain part of the data and if granted he is allowed to edit it If refused he can still view the data but isn t allowed to modify them 82 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Locking is performed implicitly on a first come first served basis Users do not have to identify themselves Locks can be set on key data and on failure mechanisms The following table indicates the required locks per action Action View data Edit data Changed but unsaved data Figure 5 11 Activity diagram for mechanism dependent locking The locker class sets a semaphore for the selected lock type This semaphore is a file which is opened exclusively Only
4. e Ringtoets will display the combined results of different mechanisms on presentation sections after selection of the combined option from the mechanism list Toggling between a GIS view and a tabular presentation is possible The combined result is a probability of failure or reliability index with a design point for each presentation section as well as a total failure probability or reliability index for all available presentation sections e The output will also show the failure probability budget for stretches that are assessed at level 1 or level 2a and the remaining budget that is available for the combined level 2b presentation sections 4 15 Report and Export input and or results UC 45 Report intput and results UC45 a After selection the menu bar command View gt Report A dockable report window will appear This report will first give an overview of the most important input data and results it has to be decided which data this is followed by tables with complete results for cross sections mechanism sections combination sections and presentation sections UC45 b The report can be written to different formats including pdf and docx Ringtoets Requirements and Functional Design 55 of 127 1207804 001 DSC 0002 16 May 2013 final UC 46 Export Via the menu bar command File gt Export the user starts the Export form In this form the user selects first an export destination SHP XML CSV and then chooses whether inp
5. must have Input or modification of locations dimensions material properties additional parameters and schematizations must be possible for all relevant mechanisms and models must have Give suggestions for default values where possible must have Validation of input data in user interface forms on the fly For example validation on syntax completeness limits and consistency should have For probabilistic assessment with the help of externally defined models advanced models and perhaps also D GeoStability MStab the input of fragility curves or actually the linearized limit state surface for different values of the external water level has to be supported together with the definition of the associated stochastic model parameters nice to have Schematization support FR 19 FR 20 FR 21 FR 22 FR 23 FR 24 FR 25 FR 26 Graphically supported definition of the location of mechanism sections and presentation sections must have Start with default parameters for dike section partitioning based on generic Water Board methodology if available should have Selection of dike sections with snap control should have Graphically support the selection of one characteristic measure surface profile from a couple of measured profiles nice to have Schematize the cross section surface profile from processed geometry data by graphically selecting or modifying characteristic points must have
6. The tab Level 2b in that property form will show the total FP per failure mechanism and the entire dike ring The numerical values of the FP per mechanism sections are also shown in the table presentation below the Map Editor The values are updated whenever the user selects another mechanism in the pull down menu The table also shows the previously used failure probability budget for level 1 and level 2a sections If the user chooses Presentation section the table shows the FP for presentation sections In this mode the table not only presents the FP values but also the available failure probability budget per presentation section The table lists the design points as well A design point is a collection of values of stochastic variables The number columns of displayed stochastic variables may be limited to key variables if there are too many The user can set the application in a mode to display design point values Then all property editors and tables show data values according to the design points This is taken care for by the StochasticParameter class References Lit 6 1 Roscoe Vrouwenvelder Steenbergen 2011 august Hydra Ring Scientific Documentation draft Deltares rapport 1202575 005 ZWS 0001 Lit 6 2 Markus Steenbergen Kamp Brinkman Visschedijk Hydra Ring 2011 august Hydra Ring Design Document draft Deltares rapport 1204145 004 ZWS 0003 Lit 6 3 Geerse Kuijper Stijnen Vrouwenvelder Dier
7. containing amongst others an overview table of the partial factors for the relevant strength and load parameters in relation to the models for the selected locked mechanism s 4 12 Execute level 2a assessment Level 2a task B3 is a detailed semi probabilistic assessment This assessment is per mechanism and per mechanism section The mechanisms include all relevant stability mechanisms in combination with preceding overtopping when relevant UC 36 Perform level 2a assessment and inspect results UC36 a In the menu bar the user selects Toetsen Asses gt Deterministisch 2a Level 2a after preceeding selection of the mechanism group toetsspoor Ringtoets will display a form to input the data relevant to the selected mechanism group UC36 b Mechanism section selection is possible via the navigation window By default all valid mechanism sections are selected UC36 c After clicking the Execute button Ringtoets will execute a level 2a assessment for the selected mechanisms and sections Clicking the Execute button will only be possible if not all input and assessment levels are available already UC36 d During assessment a progress indicator will display the progress while warnings log messages and error messages are written to different tabs of the messages window UC36 e The assement results are initially only stored in the Ringtoets memory Only after a user invoked Save command the calculation results are saved to the pr
8. should have GR 9 Ringtoets will supply clear and sufficient feedback to the user e g progress error and warning must have GR 10 Ringtoets will support tabular and limited graphical output presentation options must have GR 11 The User Interface the feedback messages and the reports will have a Dutch and English language mode must have GR 12 The full theoretical background of Hydra Ring will be available in English language must have GR 13 The User Manuals will be in available in Dutch language and contain a reference part a tutorial part and a summary of the theoretical background In the theoretical part references will be made to the full theoretical documentation of Hydra Ring in English language must have Table 3 1 Expected support of mechanism models in Ringtoets in 2017 depending on results from other WTI and SBW subprojects Dike sections Overflow wave overtopping Overflow wave overtopping Heave Piping Piping Instability of the inner slope Instability of the inner slope Failure of the revetment Failure of the revetment Instability of the outer slope Micro instability Dunes Dune erosion Wind erosion Hydraulic Structures Overflow wave overtopping Overflow wave overtopping Piping Piping Structural failure Non closure of gates or doors General Strength and stability of transitional structures Foreland instability Failure due to non wat
9. 3 1207804 001 DSC 0002 16 May 2013 final b Characteristic water level at the toe of selected cross sections for a subsequent semi probabilistic assessment as well as a table of water levels per cross section for different exceeding probabilities must have c Wave parameters per cross section location at different heights for a subsequent semi probabilistic revetment assessment According to the Hydra software these wave parameters need to be determined with a special approximated limit state function R H T where R is some user defined measure of strength must have d The required crest level per selected cross section to limit the characteristic overtopping discharge to a user defined allowed value as well as a table of different crest levels with different overtopping exceeding probabilities hydraulisch belastingniveau must have e Assessment results and FP budget per selected mechanism and section following from semi probabilistic analysis level 1 or level 2a with mechanism dependent output details must have f FP per selected mechanism and section incl design point data following from probabilistic analysis level 2b must have g Combination of results from semi probabilistic and or probabilistic analysis must have h Fragility curves tables of a FOS or FP as a function of stepwise variation of water level and other uncertain parameters for different mechanisms and sections should have
10. CSV files supported by MS Office and others must have Ringtoets will offer options for exporting schematized data per cross section to stand alone tools should have Import already available flood defence key data FR 6 FR 7 FR 8 FR 9 FR 10 FR 11 FR 12 Import processed measurements such as surface profile piezometric polder heads etc must have Import the locations of relevant objects such as different revetment zones different characteristic lines along the flood defence breakwaters etc must have Import existing properties of relevant flood defence objects such as revetment properties breakwater properties etc must have Import an existing subsoil model profile plus properties must have Import selected already existing schematization choices for different mechanisms and models such as a dike section partitioning must have Validation of data integrity during import e g check on missing data consistency and ranges should have All imported data must be saved to the project database must have 24 of 127 Ringtoets Requirements and Functional Design 3 3 3 3 3 4 1207804 001 DSC 0002 16 May 2013 final User input or modification of flood defence data FR 13 FR 14 FR 15 FR 16 FR 17 FR 18 All user input data must be saved to and retrieved from the project database must have A different dike section partitioning can be made for every failure mechanism
11. DSC 0002 16 May 2013 final 2 2 Main features Schematization using imported or inputted data Ringtoets will have functionality for input or import of data and support the schematization process from processed data to the required model input for assessment either semi probabilistic or probabilistic The user can specify the geometrical and physical properties of flood defence sections per mechanism The user can connect these sections to predefined locations of hydrodynamic data already available in databases The graphical user interface will support the schematization process by offering tools for visualising editing and modifying the properties per mechanism and longitudinal section Calculation of hydraulic boundary conditions Ringtoets will offer a probabilistic calculation of the water levels waves and overtopping characteristics at different locations Ringtoets will use the output at cross section locations for a subsequent semi probabilistic assessment of different failure modes Execution and combination of safety assessment on different levels The main functionality of Ringtoets is to execute safety assessments on different levels This means that a user can perform simple geometry based assessment detailed semi probabilistic assessment and detailed probabilistic assessments with the help of Ringtoets Ringtoets will also support the combination of assessment results from different mechanisms and different sections potent
12. For linking breakwaters to cross sections see UC 21 Editing dike sections A level 2a or 2b assessment requires dike sections instead of cross sections The two user defined types of dike sections are mechanism sections and presentation sections The mechanism sections are homogenous dike stretches used as input for failure mechanisms Presentation sections are dike stretches used for the combined failure probability of multiple mechanisms level 2b Initially the entire dike line is one large section The user can split a dike section in two parts by adding a division point A division point is a point in between two adjacent cross sections It is only possible to apply a division points at one of the available dike points A dike point divides the dike line between two cross sections As a consequence the smallest dike section possible contains only one cross section The mouse pointer automatically snaps to those dike points It is for example possible to move a division point along the dike line and release it at one of the existing mid points Removing a point is possible as well For convenience the adjacent dike sections get contrasting coloring dark light for good visibility Ringtoets Requirements and Functional Design 91 of 127 1207804 001 DSC 0002 16 May 2013 final Cross section Cross section Dike Point Dike Point Select Dike Point New Section Figure 5 17 Splitting a dike section by adding a division p
13. Ground price region Length fa Length type 1 m Length type 2 m Length type 3 fm Length special m L Length of meacure types 2 ar 5 Selected Names 10 1 4 A 1 A Coste1333 60 E M Total coste 2336763759 KZIT ZD bench GGC Im Taties Tables Messages f Ohermgs Oke sectors Oevelopments Mesures skes Number of ground cossings Crossngs ay Elm ld al Number of constuctve cess Cost Total cost Length y S atvehghy ovelydraa engthupe angthipe angthipe lagha la Space below cossira m Um a ie ml im fm m m 1333 60 23367637 59 2200 28 Rural 2 sal Tap level piping ee Top level plestocene fm MD NSH 1475 83 23261854 55 872 22 Rur 1334 74 15506596 55 Figure 5 4 Example of an User Interface based on Delta Shell Light The following generic features are provided as part of the different Delta Shell Light components Multi language The application can be displayed in multiple languages support Multi unit support The application can be displayed with different units In this way the user can select units appropriate to the size of values or what he is familiar with whether it has been modified by the user new project or load the last used project Selection behaviour The selected object is synchronized among all windows This helps the user to understand what is displayed in all windows For example the map window cross section property window
14. Save command the calculation results are saved to the project database After the calculation has finished the following results will be available as chart tabs UC26 f For a selected cross section or output location Ringtoets will present a table or graph for each characteristic wave parameter wave period wave height at the toe as a function of the water level for different wind directions Cross section location selection will be possible via the map or from a list For each level in the table Ringtoets will also present the design point illustratiepunt of the stochastic variables optionally per wind direction Ringtoets will additionally give the associated wave parameters at the toe and at the start of a foreland and or a breakwater when applicable For all calculated wave parameters with different exceeding probabilities at different locations Ringtoets will offer also the associated design point value s as output This means the values of the stochastic variables optionally per wind direction UC 27 Ringtoets can calculate and or display overtopping results per schematized cross section UC27 a In the menu bar the user selects Toetsen Assess gt Taak Assessment and Toetsen Assess gt Spoor Mechanism gt Overslag Overtopping To open the overtopping calculation settings select Toetsen Assess gt Instellingen Settings and the Overslag Overtopping window opens in the property window In this form it is possibility to select
15. Strijklengte The fetch area per wind direction for the development of wind waves according to the Bretschneider model File format Bestandsformaat File formats are defined for specific data sets Flood defence Waterkering A water retaining object dike dune structure protecting the hinterland Foreland Voorland Area outside the dike from dike toe to hydraulic boundary point with undisturbed hydraulic conditions Probabilistic method First Order Reliability Method determines the so called design point and associated FP using iterative linearization of the limit state function FOS Veiligheidsfactor Factor of Safety Ratio between allowed and actual value of a certain load type A 2 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final FP budget Faalkansenbudget The allocated allowed failure probability for different mechanisms and sections in case of a sem probabilistic assessment GIS GIS Geographic Information System GIS layer GIS kaartlaag Layers in a GIS map of a certain theme GIS map GIS kaart A map with geographic background and objects Heave Opbarsten Mechanism of heave of the cover layer due to the upward pore pressure in the aquifer underneath Hydraulic load Hydraulische belasting Load of a construction due to hydrodynamic processes Hydrodynamic Hydraulische Database with the hydrodynamic parameters database randvoorwaarden Key data kerngegevens Key data
16. System documents 6 1 6 Assumptions and Constraints 7 1 7 Summary of relevant concepts and procedures 9 1 7 1 Failure mechanisms 9 1 7 2 Assessment levels and section divisions 11 Scope 12 2 1 System definition 12 2 2 Main features 14 2 3 Supported tasks and workflow 15 2 3 1 Overview 15 2 3 2 Detailed Workflow 16 Requirements 22 3 1 Introduction 22 3 2 General requirements 22 3 3 Functional requirements 24 3 3 1 Data connections 24 3 3 2 Import already available flood defence key data 24 3 3 3 User input or modification of flood defence data 25 3 3 4 Schematization support 25 3 3 5 Visualisation of input and schematization data 26 3 3 6 Execute calculations 26 3 3 7 Reporting and visualization of results 27 3 3 8 Export input and results 28 3 3 9 Design rules for the Graphical User Interface 29 3 4 Non functional requirements 30 3 4 1 Standards and requirements Rijkswaterstaat 30 3 4 2 Additional conventions and standards 30 3 4 3 Operational and accessibility requirements 30 3 4 4 Logging and error handling 31 3 4 5 General Performance 31 3 4 6 Capacity 31 3 4 7 Reliability requirements 32 3 4 8 Validation Rules 32 3 4 9 Recoverability 32 3 4 10 System availability and support 32 ii Ringtoets Requirements and Design 1207804 001 DSC 0002 16 May 2013 final 4 Functional Design Use Cases 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 Introduction Installation of Ringtoets Getting started Create or open a project Import
17. a path is expected to be close to the dike line but not necessariliy so A path is a line consisiting of points The actual top and bottom at a certain location become clear in combination with a schematized surface line intersections revetement paths with surface line The user can select add edit and remove revetment zones Revetment types grass stone asphalt with sub types Revetment has physical revetment properties such as size and parameters for mechanism models The model parameters are different per revetment type and sub type Inpuft for each property the mean value statistical standard deviation and standard deviation used for mechanism There can be more than one revetment zones in one cross section profile sections or revetment zone sections on the surface line NL Bekledingszone zonenaam bekledingstype gras steen asfalt met onderverdelingen onder en bovengrens zone bekledingseigenschappen afmetingen faalmechanisme specifieke parameters Structure Hydraulic Structures like gates concrete defense walls etc Structurs are line objects and have a begin and endpoint location points Their line symbology in the map is different from the dike They have a name type geometry and other assessmemt specific properties NL kunstwerk verticale muren Eigenschappen naam type afmetingen overige eigenschappen voor toetsing Breakwater Breakwaters like dam caisson rubble mound are line objects They have
18. a begin and end point location points The structures have a symbology that is different from the dike line e g line width colour in the map editor The user can select a the structure and open its project property form for name type geometry and other assessment specific properties NL dam caisson strekdam NL eigenschappen naam type afmetingen overige eigenschappen voor toetsing PiezometricHead Piezometric Head is imported with key data in the map editor as polygons It is applied to all cross sections inside a particular polygon Cross sections outside the polygon will need additional manual input of the Piezometric head in the cross section editor Ringtoets Requirements and Functional Design 73 of 127 5 3 1 3 1207804 001 DSC 0002 16 May 2013 final Water level at the polder side to be used as water level in a ditch on the polder side NL polderpeil opzethoogte windrichtingsector NL deining golfhoogte golfperiode Wave Wave data at dike toe Properties are peak period and angle i e angle of attack onto dike Seiche Defines a seiche i e a long standing wave should not be part of project data but part of internal database WaterLevel Water level at dike toe at the river side if available Default values for hydraulic parametes will be applied if available Linking routines key data Key data is translated to object classes The relations between object classes are de
19. an import definition file Format of imported and exported data Imported data and exported has either a csv shp or xml format Different types of data can be contained in different files Editing data Modification of key data The UI of Ringtoets will use Delta Shell Light components 5 2 1 such as a map and cross section window Other UI components are property editors and tables The user can select and modify objects through one of these components The content of all these UI components is synchronized With synchronization the property editor is for example updated if a user selects a new object in the map editor Some key data is mechanism specific The user must select the assessment level and mechanism with the Map Editor controls for the purpose of data filtering Initially the key data is used for all mechanisms When editing the key data for one specific mechanism Ringtoets implicitly will make a duplicate copy which can be altered per mechanism Key data is imported from external source and saved to the project database It is a snap shot of the external data Modifications on the project data will not be stored or otherwise synchronized in the original data source Ringtoets Requirements and Functional Design 87 of 127 1207804 001 DSC 0002 16 May 2013 final General User Interface functionalities are described 5 2 together with the access to specific menu functions for modification and visualization
20. by multiple users inside and outside the local area network Installation on local MS Windows PC s needs to be possible also for situations where a Citrix based installation is not yet feasible must have NFR 5 Ringtoets must allow multi user access to the project database which can optionally be located on an external network server A central database on a network server can be used for direct access during assessment by users working in a Citrix environment or for the purpose of exchanging and sharing data between users working locally on different assessment branches must have Logging and error handling NFR6 Ringtoets and its computational core must perform sufficient error checks on the validity and completeness of data during import or input as well as during a computation Ringtoets needs to show warnings and error messages in an error message dialog and write them also to a log file The message text needs to be clear in what went wrong and where it went wrong context The message finally needs to supply suggestions for improvement wherever possible must have NFR 7 Ringtoets must support the selection of different logging modes for the computational core The logging form should show the log information of the latest computation This information can help the user when a computation does not succeed or when the user wants to analyse the quality of the calculation results must have NFR 8 Output of detailed deterministi
21. calculate the combined failure probability for all selected mechanisms The user activates the Presentation Sections form via a menu bar command An initial GIS screen or table shows the combination sections resulting from a level 2a analysis with FoS indication Initially Ringtoets will use every combination section as a presentation section The user can join two or more combination sections to one presentation section via GIS or via a table Ringtoets Requirements and Functional Design 53 of 127 1207804 001 DSC 0002 16 May 2013 final UC 40 Inspect and modify the default autocorrelation parameters in space and time The View gt Defaults menu gives access to an overview of the different autocorrelation factors in space and time for the relevant strength and load parameters in relation to the selected locked mechanism s A user can modify one or more of these parameters when required UC 41 Export Import project data for a level2 assessment In order to share project data one user can export the mechanism specific project data for the locked mechanism and another user can import this data in a central database and then execute a level2a and level2b assessment 4 14 Execute level 2b assessment Perform assessment level 2b task C1 Level 2b is a detailed probabilistic assessment This assessment is per level 2 mechanism section and also for combined mechanisms and mechanism sections on so called presentation sections UC 42 Pe
22. continuous line of flood defences dikes dunes structures barriers or high ground protecting a certain region Dike section Dijkvak A part of the dike for which strength and load properties are homogeneous Discharge afvoerdebiet The river discharge Q Discharge Afvoerpiek The highest discharge in a modelled discharge peak wave Discharge Afvoergolt The assumed development in time of the river wave discharge during a high water period Drop down Drop down menu A drop down menu with a number of predefined menu selection options DS Directional Sampling Monte carlo directional sampling Discharge Werklijn Frequentielijn F Q The average number of occurrences per exceedance winter period that the discharge Q exceeds a frequency certain value curve Failure Faalmechanisme A fundamental process or defect causing failure of Mechanism the water retaining function Examples are overtopping overflow slope instability piping revetment failure dune erosion etc Failure Faalmechanisme A failure mechanism can have more failure mechanism model mechanism models The failure mechanism piping model can have one or more sub soil models Failure Faalkans The annual probability that a flood defence fails probability FP i e that water enters the protected area calculation scheme named after Ferry Borges and Castanheta with a blockwise description of the temporal evalution of a discharge wave or lake level Fetch area
23. defined for piping See comments on mechanism sections at OvertoppingDikeSection Characteristic cross section can also link to probabilistic soil profile Default piping model Optional non default damping factor user defined For piping two additional points must be added 1 Entrance point using support lines or toe outer slope conservative assumption 2 Excess point using determined by algorithm or inner toe conservative assumption NL intreepunt uittreepunt binnenteen buitenteen PipingMechanism Performs a piping calculation for one dike section Default value damping factor hydraulic pressure difference between entrance point and inner crest toe NL dempingsfactor stijghoogte tussen intredepunt en binnenteen RevetmentDikeSection A dike section defined for revetment See comments on mechanism sections at OvertoppingDikeSection Per mechanism type and sub type non default model parameters RevetmentMechanism Performs a revetment calculation for one dike section Default model parameters per mechanism type and sub type 5 3 3 Import and export This section contains classes for facilitating import Export is handled by DeltaShellLight components The classes are described together with their interaction in section 5 5 5 3 4 Failure mechanisms The failure mechanisms package contains classes to calculate a failure mechanism Its input and output data are part of key data except calculation options R
24. diamond etc The user can select structures add or remove structures Part of the structure properties will be specific for mechanisms UC 13 Breakwaters golfbrekers like caissons dammen rubble mounds and verticale wanden vertical walls can be edited in a properties window after selection of a breakwater in table or map The object list with structures and the property window are displayed via the Beeld View gt Tabellen Tables gt Golfbrekers Breakwaters command from the menu bar In the map window different types of objects are marked differently e g circle diamond etc The user can select breakwater structures add structures or remove structures and change the properties of the structures UC 14 Revetment bekleding can consist of different zones along a cross section each zone spanning multiple cross sections Every revetment zone has its own revetment properties The revetment zones locations and properties are usually imported but they can also be defined or modified by the user UC14 a The available revetment zones are listed in a Bekledingzones Revetment Zones List with the last added ones by default in front New zones can be 40 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final added to or removed from that list with the help of buttons A user can select a revetment zone in that list and then edit the properties in a Properties window The required properties depend
25. including April 2013 The update also reflects all received feedback from the principal and the Advisory Group Further improvement will take place during the following stages of development Ringtoets Requirements and Functional Design 1 of 127 1207804 001 DSC 0002 16 May 2013 final 1 4 Background 1 4 1 WTI 2017 project Rijkswaterstaat has commissioned Deltares to develop a new set of methods and tools for assessing and designing the Dutch flood defence systems based on the failure probability of a dike ring Since 2012 this development is a part of the project WTI 2017 Lit 6 11 A first version of the new regulations and supporting software needs to be available in the course of 2013 in order to start an evaluation and improvement period that will run until the end of 2016 TOI Preliminary WTI 2017 further New instruments 2009 development development and evaluation 2016 Figure 1 1 Global time schedule TOI project Figure 1 2 presents a sketch of the view of Rijkswaterstaat on the context of the assessment instruments The figure originates from the TOI Project Start Architecture document Lit 6 7 Gebruiker RAS Gebruiker waterschap Sinn informatie Toets en Ontwerp Instrumentarium Hydraulische Adviseur randwoorwaarcden i ingenieursbura Overstromingskans Of Kruinhoogte Figure 1 2 Rijkswaterstaat view on system context according to Lit 6 7 Figure 1 3 shows t
26. items Bestand File Bewerken Edit Beeld View Toetsen Assess Gereedschap Toos Help The user can access the Users manual via Help gt Handleiding Manual The Dutch language manual contains besides the tutorial part also a reference part and a scientific part The tutorial part supplies a step by step example description covering the input and assessment process for different types of mechanisms and for different assessment levels After reading this section the user is aware of the steps to follow and the input data to supply When starting Ringtoets thereafter Ringtoets will open with the last opened project 4 4 Create or open a project UC 4 UC 5 UC 6 Optional setup access to a project database server In case of an intended project database on a remote server the server administrator needs to grant access to the users which are allowed to create or modify the project database s A server location in a demilitarized zone is required if people from outside the local area network need to have direct access After each start of the program Ringtoets will check the software version plus hydrodynamic databases including the output locations database and give a warning if they are not available or out of date An internet connection is required for this functionality The user can now create a new project In the menu bar he selects Bestand File gt Nieuw New Ringtoets opens a dialog where the user must de
27. lt must be possible to assign different parts of the project to different users GR 6 based on a division by failure mechanism and optionally also a division by sections or division by data groups as indicated in datatree should have lt must be possible to undo and redo a sequence of user actions must have Modify relevant model schematization parameters y axis in a space graph based on dike reference system x axis Should have Ringtoets Requirements and Functional Design 25 of 127 3 3 5 3 3 6 1207804 001 DSC 0002 16 May 2013 final FR 27 Functionality to suggest and connect the nearest hydraulic boundary locations hydrodynamic output locations sometimes also referred to as stations to dike sections and or vice versa must have FR 28 Highlight the hydrodynamic output locations linked to a cross section location when selecting the cross section in top view should have Visualisation of input and schematization data FR 29 Usage of GlS layers with the possibility to change the layer sequence and to toggle layers on off must have FR 30 Option to change background layers e g topology maps satellite images must have FR 31 Option to use Web Map Services for background layers should have FR 32 Show the location of the flood defence system with the attached points the connected location labels e g hectometrering and the axial reference coordinate in the dike GIS layers must have
28. messages are either errors or warnings If errors are present running an assessment is not allowed The following validations take place Warning Check if cross sections are linked to one or two HB output point s for level 1 assessment Note cross sections without HB output point s can use interpolation 0 to get a characteristic water level and wave parameters Warning Check if cross sections have characteristic points for the foreland and outer dike slope as input for the computations If not give a warning that interpolation is necessary level 2b assessment Dike section consists of complete dike ring Error Dike surface line validation in the Cross section editor for Overflow and Wave overtopping Foreland The horizontal surface point coordinates must increase going from start foreland to outer dike toe important for tabular input Error Check if characteristic cross sections one for each mechanism section are linked to one or two HB output point s for level 2a and 100 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Slopes steeper than 1 to 10 are not allowed both rising and downward parts gentle slopes are allowed The minimum distance between surface points is 10 m too much detail in foreland is not allowed The surface points cannot go lower than the first foreland point Dike The dike consists of one or multiple dike line segments The
29. multiple requirements Assumptions are also needed to specify the still undefined or uncertain parts of the WTI project context to a sufficient detail CNS 1 The draft document Project Start Architektuur TOI Lit 6 7 defines the constraints provided by Rijkswaterstaat CNS 2 The Deltares report Uitgangspunten WTI Lit 6 12 defines the general assumptions and constraints for the Deltares WTI project as a whole CNS 3 The first evaluation version of Ringtoets must be available at the start of the evaluation period which is tentatively in the course of 2013 The aim of the evaluation version of Ringtoets in combination with the evaluation version of Hydra Ring is to support semi probabilistic and probabilistic analysis of all Dutch primary flood defences with a functionality similar to the Hydra s and to PC Ring CNS 4 Ringtoets will support the deterministic and or probabilistic analysis of all mechanisms contained in a new VIV 2017 software library of failure mechanisms The specifications of different VTV 2017 failure mechanism models however as well as the subsequent specification and development of the software library itself are not a part of the Ringtoets specification and development CNS 5 The requirements and limitations for probabilistic analysis with Ringtoets level 2b are already defined in the Hydra Ring design document Lit 6 2 This includes the requirements on the failure mechanism models and hydraulic load m
30. of key data 5 6 2 Map window This section describes the functionality of the map window in detail The Map window shows the dike geometry in top view so only georeferenced data is visible Data can be selected and then their properties are displayed in the property form The following items are visible on the map UC La Background picture local or from server system Layer definitions optional Laag definities Dike line A line with bending points which indicates the location of the UC 10 dike Soil segment Dike stretch representing the location of a soil segment Dike stretch representing the location and type of a structure ahd lin location of a breakwater UC 13 UC 21 yer Fetch Group of lines pointing towards wind directions see examples UC 22 Import of precalculated fetch tables Automatically calculate fetch lengths nice to have Swell Symbol representing the location of swell input Revetment Indicates the revetment zones along a dike Per revetment zone there is a line so there may be multiple lines together see the example below 88 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Figure 5 15 Revetment zones in Map Editor for dike with three revetment layers upper line and two revetment layers bottom line adding moving or deleting dike section points Dike section A dike section mechanism section presentation section is indicated
31. of key data Input or modification of key data Schematization for hydraulic boundary conditions including overtopping Calculate hydraulic boundary conditions and overtopping per cross section Schematization for level 1 assessment of height and stability 4 10 Execute level 1 assessment for height and stability 4 11 Additional schematization for level 2 assessment 4 12 Execute level 2a assessment 4 13 Additional schematization for level 2b assessment 4 14 Execute level 2b assessment 4 15 Report and Export input and or results 4 16 Strip results from database and close the project 5 Technical Design 5 1 9 2 5 3 5 4 5 5 5 6 9 5 8 Introduction System architecture 5 2 1 Modular User Interface design with the Delta Shell Light library 5 2 2 Menu and toolbar Data model 5 3 1 Key data 5 3 2 Assessment model schematized data and results 5 3 3 Import and export 5 3 4 Failure mechanisms 5 3 5 Ul 5 3 6 Ringtoets plugin Project management 5 4 1 Start a new project 5 4 2 Automatic Locking of data 5 4 3 Saving data and configuration Import and Export 5 5 1 Import and export data model 5 5 2 Import user interface 5 5 3 Format of imported and exported data Editing data 5 6 1 Modification of key data 5 6 2 Map window 5 6 3 Cross section editor 5 6 4 Property window 5 6 5 Tables and charts Validation Assessments 5 8 1 Assessment Level 0 5 8 2 Assessment Level 1 5 8 3 Assessment level 2a 5 8 4
32. on the revetment type and subtype and on the mechanism model It is possible to select a Revetment Zone in the List and use the Copy button to make a duplicate with a new name and initially the same revetment properties UC14 b Revetment in the map The user starts by selection via the menu bar Beeld View gt Tabellen Tables gt Bekledingszones Revetment Zones The location of the available revetment zones will be shown in the map window via colour lines along the dike line The user can edit the revetment features and properties in the map UC 15 For the purpose of a uplift neave piping assessment Add or modify the inland piezometric heads stijghoogtes and inland water levels polderpeilen along the dike line after selecting the Beeld View gt Tabellen Tables gt Stijghoogtes Piezometric Heads and the Beeld View gt Tabellen Tables gt Polderpeil Inland water levels command from the menu bar The object list will show the available sets consisting of an upper and lower limit for both the piezometric heads and the inland water levels Ringtoets will display already imported or inputted piezometric heads and inland water levels in the chart window as a function of the dike line coordinate in a graph or in a table The user can add delete or modify points and values in this table The graph will show the name labels of location points along the dike line at certain distances The user can modify or extend the piezometric data table w
33. outer levee toe outer levee crest inner levee crest inner levee toe berm crest berm toe etc e Define or update the locations of the characteristic points e Import or define the inland piezometric head polder head distribution along the dike location line e For revetments and wave overtopping overflow import or input the location and properties of different revetment zones e For revetments and wave overtopping overflow import or input the locations and properties of breakwaters and foreland both causing wave reduction See UC 10 page 40 to UC 17 page 42 for details on the required key data Note that the full key data includes already processed data such as surface descriptions subsoil schematizations and model parameters 4 Two different versions of the dike line can exist the global location according to the Rijkswaterstaat administration and the actual location according to the water authority 16 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final A2 Compute water level overtopping level and wave data e Use Hydra Ring to calculate the characteristic assessment water level the water level with a certain annual exceeding probability along the flood defence system at the toe of each location where measured cross section geometry is available or at each output location See UC 25 page 45 for details e f wave parameters are not available directly from the internal dat
34. section of the mechanism 94 of 127 Ringtoets Requirements and Functional Design 5 6 3 1207804 001 DSC 0002 16 May 2013 final section Characteristic means that the cross section is characteristic for the entire mechanism section The properties attached to the cross section location become the input for the considered failure mechanism In the Map Editor there is a button to activate the Link characteristic cross section mode In that mode the user can mark a cross section inside a mechanism section as the characteristic section First the user selects a mechanism section on the dike line Second the user selects a cross section Manual input in a mechanism sections list is possible too The characteristic cross section gets a more striking color or shape Figure 5 20 In the Map Editor toolbar there is also a button Link to the most central cross section When pressing this button a dialog appears in which the user must confirm that all existing characteristic cross sections for a certain mechanism branch will be removed After confirmation Ringtoets will remove all existing indications of characteristic cross sections and then look for the cross section location which is most close to the center of the mechanism section Manual adjustments thereafter are possible Selected Mechanism Section End Faint Begin Paint N 8 aN Cross section R Figure 5 20 Manually select characteristic cross section for mechan
35. segments are either slope segments or berm segments Slope segments have a minimum inclination of 1 to 8 Berm segments have a minimum inclination of 1 to 100 and a maximum inclination of 1 to 15 As a result dike segments between 1 to 15 and 1 to 8 are not allowed These intermediate area s cannot be calculated by the wave run up routine A maximum of two berm segments are allowed The minimum distance between dike points is 2 meter Too much detail in the dike profile is not allowed The horizontal point coordinates must increase looking from dike toe to dike crest The vertical point coordinates must increase looking from dike toe to dike crest Slope segments are steeper than 1 to 8 but cannot be steeper than 1 to 1 almost vertical slopes or vertical walls are not allowed The first and last slope section must be steeper than 1 to 8 Revetment Arevetment segment to determine the roughness cannot be smaller than 1 meter The revetment cannot be positioned lower than the lowest slope point or lower than the endpoint of the foreland Overlapping revetments segments are not allowed gaps between revetments are Note These revetment segments validation rules apply to the main mechanism Overflow and Wave Overtopping and not for the main mechanism Revetment The main mechanism Overflow and Wave Overtopping just need the revetment surface roughness to calculate the hydraulic conditions on the oute
36. the data format of the schematization and assessment results and the format of the final assessment report The regional water authorities waterschappen and Rijkswaterstaat are the end users responsible for the execution of the actual assessment including data acquisition schematization analysis and reporting The regional water authorities commission their assessment tasks mostly to specialized civil engineering consultants The total number of consulting employees doing actual assessments is not more than two hundred During the Ringtoets definition and development stage Deltares will frequently consult the Ringtoets Advisory Group in order to get feedback on intermediate results This group consists of both the regional water authorities responsible for assessment and the consultants to which assessment tasks are usually delegated Related to the WTI as a whole the Directoraat Generaal Waterstaat is primary responsible for all formal communication with public administration representatives and the Waterdienst is primary responsible for all formal communication with the regional water authorities in coordination with the Directoraat Generaal Waterstaat Deltares is finally responsible for communication with the civil engineering consultants in coordination with the Waterdienst 1 5 System documents Together with the document in hand the following documents comprise the currently available system documentation for
37. visible as characteristic points at intersections with the surface line The user can select move add and delete these characteristic points Adding and moving is only possible along the surface line Characteristic points must be labeled as begin point fore land entrance point piping toe outer slope outer crest crest inner crest inner slope toe inner slope start ditch end ditch etc NL karakteristieke punte op dijkprofiel begin voorland intreepunt 70 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final piping teen buitenberm buitenteen buitenkruin kruin binnenkruin binnenteen teen binnenberm start sloot eind sloot enz GeometryPoint 3D Point which indicates a point in a surface line The X and Y coordinates indicate the geographic location but defined relatively to the location of the surface line Stochast Defines the stochastic distribution of a property in for example soil The distribution type and parameters define the stochastic values The number of values depend on the distribution type The following distribution types exist Deterministic 1 value Normal 2 LogNormal 3 Uniform 2 For each stochastic parameter there is an associated property in a class for example DryUnitWeight stochastic parameter is associated with the DryUnitWeight base property being a double in the soil class This is defined by the owner and property in this class
38. when this open action succeeds the lock is granted It doesn t matter whether the file existed already because this prevents the whole system being locked up if an application terminates unexpectedly 5 4 3 Saving data and configuration All Ringtoets project data is saved in a project database Import and export of project data occurs via a separate xml file for the key data and general project data and separate xml files for data related to the the different mechanism branches for level2 assessment In this way concurrent data updates for different mechanism branches are possible Ringtoets Requirements and Functional Design 83 of 127 1207804 001 DSC 0002 16 May 2013 final Figure 5 12 Data Classes for writing to the project database The classes which are not accessible by the RingtoetsProject are used to control and configure the user interface The RingtoetsPlugin makes the connection with the Delta Shell Light framework 5 5 Import and Export 5 5 1 Import and export data model Importing data is performed from several file formats As long as a file format targets one data type of object this is done in a generic way The file format is described by attributes or in an xml file Then the data is read and corresponding data classes are populated The soil model is queried for providing appropriate data classes This is visualized in the figure below 84 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 000
39. whether the influence of foreland or breakwaters should be included as well as the influence of different hydraulic parameters UC27 b Cross section selection for calculation of overtopping discharges is possible via the navigation window By default none of the cross sections are selected UC27 c After Toetsen Assess gt Start Start Ringtoets will start the overtopping calculation Ringtoets will calculate the overtopping discharges at cross sections with linked output locations and with schematized cross section surface Ringtoets will interpolate the calculated results along the dike line in order to find values for the other cross sections Clicking the Selecting Start will only be possible if not all required results are available already UC27 d During calculation of missing results a progress indicator will display the progress while warnings log messages and error messages will be written to the Meldingen Messages table UC27 e The calculation results are initially only stored in the Ringtoets memory Only after a user invoked Save command the calculation results are saved to the project database After the calculation has finished the following results will be available as chart tabs Ringtoets Requirements and Functional Design 47 of 127 4 9 1207804 001 DSC 0002 16 May 2013 final UC27 f At a selected cross section a table or graph of different crest levels with associataed different probabilities of exceeding a use
40. 10 are not allowed etc section 5 7 and give a message if not UC24 d The user inputs or modifies the coordinates and roughness s of the segments of the surface line in the list wherever required 4 8 Calculate hydraulic boundary conditions and overtopping per cross section The probabilistic calculation of the hydraulic boundary conditions per cross section is required for a subsequent semi probabilistic level 1 or level 2a assessment Calculation of these conditions at the schematized cross sections task A2 is possible after linking cross section locations to output locations for hydraulic boundary conditions and after schematization of linked breakwaters foreland and fetch areas UC 25 Ringtoets can calculate and or display the water level with a certain exceeding probability at both the output locations river axis and at the toe of selected cross section locations UC25 a ln the menu bar the user selects Toetsen Assess gt Taak Assessment gt Hydraulische belasting Hydraulic boundary conditions With Toetsen Assess gt Instellingen Settings the Rekeninstellingen Calculation settings tab opens in the properties window In the Toetspeilberekening Water level computation section of this tab it is possible to select whether the influence of foreland and relevant hydraulic parameters should be included during a calculation at the toe Voorland meenemen Include foreland UC25 b Cross section selection for calculation of the water
41. 2 16 May 2013 final Figure 5 13 Activity diagram for importing data This is implemented in the following classes Ringtoets Requirements and Functional Design 85 of 127 1207804 001 DSC 0002 16 May 2013 final Figure 5 14 Data classes for importing data The classes have the following meaning Takes care of populating data classes based on data read from file En ee ewe ee and runs them in parallel Vai dail class type PropertyDefinition Defines the relation between a field name e g the header in a CSV file and a property in a data class attributes defined in the data classes definition DataFactory Interface which defines a data factory Le a data source which is capable to provide an instance of a data class based on a type definition The 86 of 127 Ringtoets Requirements and Functional Design 9 9 2 9 9 3 5 6 5 6 1 1207804 001 DSC 0002 16 May 2013 final GetObject Retrieves or creates an object of the requested type and key and locates it in the proper place e g a swell is added to the list of swells the delta model Top object of the delta model see elsewhere Import user interface When the user wants to import data a form is displayed in which he can select per data type whether it should be imported and if so its file location Pressing the OK button will start the import Next to the OK and Cancel button there is the possibility to save and load file locations from
42. AM van der Zwan FC2015 report 2010 Lit 6 15 Technisch Rapport Waterspanningen bij dijken 2004 TAW report DWW 2004 057 ISBN 90 369 5565 3 112 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final A Glossary of terms English to Dutch Terms in italic are not used in the current report English Dutch Description Arbitrary point in time refers to a alternative method for FBC modelling the time position in a trapezoidal shaped evolution of a discharge wave or lake level by using an additional stochastic time variable Assessment Toets refers to the assessment of flood defences to determine if they comply with legally mandated protection levels during the assessment period Assessment Toetspeil Characteristic water level associated with a legally water level mandated exceeding probability at the end of the assessment period Block Blok Refers within the FBC calculation scheme to the rectangular shape of a temporal process such as a discharge wave Block duration Blokduur The width in time of a temporal process represented by a block Central form Centrale dialoog The central form of the program screen Characteristic Karakteristieke lijnen Lines parallel to the dike which combine a certain lines characteristic point in different dike cross sections Characteristic Karakteristieke waarde Value with a certain exceedance probability value Combining Oprollen
43. Additional schematization for level 2b assessment Level 2 dike sections that do not pass a level 2a assessment are automatically input for the level 2b assessment fully probabilistic check For level 2b additional information per mechanism is required UC 37 Selecting the data filter Level 2b in combination with selection the data filter for the appropriate mechanism will limit the required input and options for all mechanisms to the required assessment level UC 38 Optional stochastic subsoil model for piping The user can re use the characteristic sub soil model sub soil layers and materials from level 2a or switch to a stochastically defined subsoil model For the latter purpose the user can select the Schematize gt Piping command and check the Use sub soil scenarios check box in the properties window The dike stretches along which a certain set of probable subsoil profiles scenarios is valid as well as the probabilities of the different scenarios along that stretch can be defined manually by the user in the list or properties tab or the required information can be directly imported from an external database which also contains the subsoil library Ringtoets will automatically connect the subsoil scenarios along a stretch to the sections in that stretch and give a warning if a single section is part of two or more subsoil stretches UC 39 Define presentation sections A presentation section is a part of the dike line used to
44. Assessment Level 2b Ringtoets Requirements and Design 1207804 001 DSC 0002 16 May 2013 final 6 References 111 Appendices A Glossary of terms English to Dutch A 1 B Glossary of terms Dutch to English B 1 IV Ringtoets Requirements and Design 1 1 1 2 1 3 1207804 001 DSC 0002 16 May 2013 final Introduction Ringtoets Ringtoets is the provisional name of a new software system for compulsory safety assessment of the primary Dutch flood defence systems dike rings according to new Dutch regulations called VTV 2017 Voorschriften Toetsen op Veiligheid Ringtoets connects for the calculation of failure probability to separately defined software called Hydra Ring Purpose and scope of this document The document in hand defines the functional and non functional requirements for Ringtoets as well as the functional and technical design e First purpose of this document is to allow the principal to check if both the requirements and the functional design are according to expectations The purpose of intermediate versions of the functional requirements and functional design is also to gather and use feedback from the Ringtoets Advisory Group This group consists of both the regional water authorities responsible for assessment and the consultants to which assessment tasks are usually delegated e Second purpose is to provide the Ringtoets developer with all required information for implementation testing and future ma
45. C31 aln the menu bar the user selects the mechanism toetsspoor and the assessment level 1 eenvoudig UC31 b Cross section selection is possible via the navigation window By default all valid cross sections are selected UC31 c The user inspects the input data and applies modifications when required UC31 d After clicking the Run button Ringtoets will execute a level 1 assessment per selected mechanism and cross section based on geometric dike characteristics Clicking the Run button will only be possible if not all required results are available already UC31 e During assessment a progress indicator will display the progress while warnings log messages and error messages are written to different tabs of the messages window UC31 f The assessment results are initially only stored in the Ringtoets memory Only after a user invoked Save command the calculation results are saved to the project database The following results will be available after the assessment calculation is completed Ringtoets Requirements and Functional Design 49 of 127 1207804 001 DSC 0002 16 May 2013 final UC31 g The available results for all assessed mechanisms are displayed in the map window for all cross sections along the dike ring The user can change the selected mechanism via a drop down box Each cross section will show per selected mechanism an indicator of the required assessment level 0 1 or 2 see Figure 2 3 If overtopping results per cr
46. Combining failure probabilities for elements with unequal design points using the Hohenbichler method Combination Combinatie vakken Dike sections with a division following from the sections joined mechanism sections for a semi probabilistic assessment of combined mechanisms D Dagenlijn D Q The average number of days per winter period that the discharge Q exceeds a certain value Dike strength Analysis Module for automated schematization analysis and design based on geotechnical failure mechanisms Design point Ilustratiepunt The combination of parameters at failure with the Ontwerppunt highest probability The FORM method linearizes the Limit State function in this point after estimating it by a gradient search method Design water MHW Ontwerppeil Characteristic water level associated with a legally level mandated exceeding probability at the end of the design life Detailed Gedetailleerde A semi probabilistic or probabilistic assessment assessment toetsing level 2a or level 2b based on failure mechanism models requiring detailed input Dike Dijk A dike as part of a defence system Ringtoets Requirements and Functional Design A 1 1207804 001 DSC 0002 16 May 2013 final Dike line Dijk lijn The dike location line usually connecting the points at the approximate centre of the dike crest Dike point Dijkpunt Point on dike line marking the begin end point of a dike section Dike ring Dijkring A dike ring is a
47. FR 33 Show the different section partitions per mechanism and the additional partitioning into presentation section in the dike GIS layers must have FR 34 Show the schematized dike profile cross section per section and per mechanism Put all relevant dike items in one overall dike form Dike form items include dike geometry soil profile scenarios construction elements ditches summer quays winter bed measured profile Visual distinction between imported data and input data to actual calculation is necessary must have FR 35 Show graphs of dike properties in axial direction using the axial coordinate as x axis should have Execute calculations FR 36 Define or modify settings for different calculation methods including the selected probabilistic method with associated parameters must have FR 37 Select output locations cross sections mechanism sections and presentation sections for the calculation of results must have FR 38 Define calculation options equal to the Hydra s and PC Ring such as including or excluding the effect of foreland must have FR 39 Start one or more of the following calculation types a Characteristic water level at the output locations river axis as well as a table of water levels per output location for different exceeding probabilities must have a characteristic value is a value with an allowed exceeding probability 26 of 127 Ringtoets Requirements and Functional Design 3
48. FR 40 Validate the complete input data from import and additional input before the calculation starts resulting in a clear message of what is missing or incorrect This type of validation is equal to the validation of imported data only FR 11 A calculation can not start if any errors are found must have FR 41 For the purpose of design enable switching from the default assessment period e g 6 or 12 years to a longer assessment period e g 50 100 year This is achieved internally by switching to a pre defined set of modified distributions for the stochastic variables that determine the hydraulic load nice to have FR 42 For policy studies enable the selection of a different databases for Hydraulic boundary conditions nice to have Reporting and visualization of results The following requirements reflect the input from the Advisory Group as recorded during the first meeting See also several use cases in chapter 4 Additional mock ups will be prepared in an early development stage and presented to the Advisory Group in order to refine the specifications FR 43 In general Ringtoets must supply output for all the calculation types mentioned in FR 39 This comprises most of the output as given by PC Ring as well as all the output given by the Hydra s must have FR 44 Improve the report format compared to PC Ring and Hydra output give it a modern look Use convenient defaults for configurable parameter combinations for ex
49. ML files UC9 a_ Dike line referentie lijn UC9 b Characteristic lines karakteristieke lijnen UC9 c Structures kunstwerken UC9 d Breakwaters golfbrekers UC9 e Revetment bekleding UC9 f Piezometric heads and inland water levels stijghoogtes en polderpeilen UC9 g Surface lines hoogte dwarsprofielen UC9 h Subsoil data grondprofielen grondsoorten UC9 i XML files allow exchange of user input or reuse of archived input In this case links to modified or deleted data objects could be broken To prevent that Ringtoets will strictly check all imported XML files on broken or non existing links If a broken or non existing link is detected Ringtoets will give a warning and decline the entire import file UC9 j If the user selects a SHP or CSV source Ringtoets will show which files with their pre configured names UC 2 are available at the specified location The import dialog will ask for names of all the required files Ringtoets will use the configured mapping table to connect the data items in the different files to the Ringtoets data items UC9 k A user can select a read or add mode for import of XML SHP and CSV files In case of the read mode Ringtoets will clear all existing input tables before importing data from the selected source In case of the add mode Ringtoets will add new database tables and give a warning when a certain table is already available and data will be overwritten Ringtoets wi
50. Numerieke integratie Probabilistic method Numerical Integration Discretizes random variables and for each combination computes the probability of occurrence and subsequently sums over all combinations that led to failure Ringtoets Requirements and Functional Design A 3 1207804 001 DSC 0002 16 May 2013 final Overflow Overloop failure mechanism that occurs when the water level is higher than the crest height of the defence Overtopping Overslag failure mechanism that occurs when the waves run over the crest height of the defence water level wave gt crest height Piping Piping The mechanism that causes loss of stability by internal erosion Presentation Presentatievak Sections consisting of one or more combination section sections for the purpose of presenting the combined contribution from different mechanisms in case of a probabilistic analysis Probabilistic Probabilistische Probabilistic determination of failure probabilily analysis analyse using stochastically distributed variables for loading and strength Project Project database Database with all project data except for the database results database and hydrodynamic database of the active project Relevance Relevantie toets Relevance check for a certain failure mechanism check for a certain dike section level 0 Revetment Bekleding Revetment of a dike defined by different zones each consisting of a certain revetment type with associated properties S
51. Overall FP for all mechanisms and presentation sections Overall OK Figure 2 5 Partially probabilistic assessment of the combination of mechanism sections C1 Perform probabilistic analysis using the same section division and model input as for semi probabilistic analysis e f required modify default settings for probabilistic procedures e Overflow wave overtopping Define the model uncertainties to be used and the allowed factor of safety Per section Re use the characteristic cross section defined for level 2a assessment Define the characteristic allowable overtopping discharge or select the model to compute the allowable discharge as part of the probabilistic procedure Compute the annual failure probability per section with Hydra Ring e Revetment Define the model uncertainties to be used and the allowed factor of safety Per section Re use the characteristic cross section defined for level 2a assessment Compute the annual failure probability per section by wave attack damage and subsequent erosion depending on the revetment type e Uplift Heave Piping Define the model uncertainties to be used and the allowed factor of safety Per section Define the characteristic cross section surface or use a stochastically defined cross section geometry Either use a characteristic 1D or 2D subsoil profile in cross section direction with associated schematization factor or use a set of probable profi
52. Ringtoets Requirements and Design 1207804 001 DSC 0002 16 May 2013 final Keywords Summary Ringtoets is the provisional name of new software for the compulsory safety assessment of the primary Dutch flood defences dike rings Ringtoets will support the new Dutch regulations called VTV 2017 Voorschriften Toetsen op Veiligheid These regulations will introduce a new assessment level based on the failure probability of a dike ring The probabilistic method required for this purpose will also be used to calculate characteristic water levels to calculate characteristic overtopping levels and to calibrate the required safety factors for a traditional deterministic assessment per dike section and failure mechanism Version 1 1 of this document contains the final specification of the functional and non functional requirements for Ringtoets together with a third draft of the functional design and a second draft of the technical design The content is based on input and response from an advisory group consisting of representatives from regional water authorities and consultants The introduction and requirements are contained in chapter 1 to 3 Chapter 1 describes the context and background Chapter 2 describes the scope and the tentatively supported workflow Chapter 3 lists the functional and non functional requirements including priority indications The Waterdienst has formally approved the final content of these chapters in April 2012
53. Ringtoets and Hydra Ring All these documents are under continuous development until the VTV 2017 regulations and associated software will be formally released in 2017 Document Project Start Architektuur TOI Lit 6 7 Gives constraints for usage of TOI within the infrastructure of Rijkwaterstaat and the water boards Het raamwerk en de aanpak van het Proposes a structure and approach for the new toetsproces voorstel Lit 6 6 safety assessment procedures VI V 2017 which are to be supported by Ringtoets Hydra Ring Design document Lit 6 2 Describes the requirements for Hydra Ring as well as the design of the software structures the data structures and the databases project database general configuration database Statistical configuration database hydrodynamic databases per region Hydra Ring Scientific documentation Lit Describes the methods and algorithms used in 6 1 Hydra Ring Serves as the basis for the scientific background in the final User s manual of Ringtoets 6 of 127 Ringtoets Requirements and Functional Design 1 6 1207804 001 DSC 0002 16 May 2013 final Assumptions and Constraints Ringtoets has to comply with the following assumptions and constraints CNS related to the different purposes of Ringtoets at the different stages of the development The reason for defining these assumptions and constraints prior to the definition of the requirements in chapter 3 is that each of them will affect
54. Ringtoets will automatically connect these cross sections to the nearest output location with search paths restricted to the waterside The resulting links will be visible in the table as well as in the map window If the distance to the nearest output location exceeds a certain threshold Ringtoets will give a warning and not link that cross section UC20 b The thresholds can be altered by the user in a settings tab UC20 c Ringtoets will automatically repeat the automated linking for a selected cross section when the location of that cross section changes UC20 d The user can manually establish or modify links in the list by first unselecting the Auto Link selection for a cross section and then selecting one or two output location id s from a list In case of a connection to two output locations the user has to specify the relative contribution of the second location The user can also remove links UC 21 Linking cross sections to breakwaters Selecting Beeld View gt Tabellen Tables gt Dwarsdoorsneden Cross sections will activate the object list with cross sections The user can manually establish or modify a link between a cross section and a breakwater in the list by selecting a breakwater location id from a list The user can also remove links The resulting links will be visible in the map window UC 22 All hydrodynamic databases in 2017 are expected to contain directly the wave parameters that are required for a revetment and overfl
55. This content is therefore closed for further discussion since version 1 0 Chapter 4 Functional Design translates the workflow and requirements to so called use cases describing the interaction between the user and Ringtoets during different workflow steps Chapter 5 Technical Design translates the use cases to a more detailed technical description of screens for the different activities and to the data mode underneath Compared to version 1 0 chapters 4 and 5 contain the result of a review of version 1 0 in the course of June 2012 Additionally these chapters contain further improvements following from the preparation and execution of three actual implementation stages between September 2012 and May 2013 Continuous further improvement during future stages is part of the development strategy References Masterplan WT1 2017 Deltares report 1201617 Version Date Author Initials Review Initials Approval Initials 0 1 Oct 2011 0 2 Dec 2011 1 0 June 2012 1 1 May 2013 Marcel Visschedijk 2 2 Kin Sun Lam A Jan Aart van Robert Kamp Twillert Aj Rob Brinkman State final Ringtoets Requirements and Design j 1207804 001 DSC 0002 16 May 2013 final Contents Introduction 1 1 1 Ringtoets 1 1 2 Purpose and scope of this document 1 1 3 Status and process 1 1 4 Background 2 1 4 1 WHTI 2017 project 2 1 4 2 Assessment method according to the VIV 2017 3 1 4 3 Global Assessment Work flow 5 1 4 4 Stakeholders and users 6 1 5
56. Vink DAM and ARC GIS FR 62 FR 63 FR 64 FR 65 FR 66 FR 67 FR 68 FR 69 FR 70 FR 71 The work process is leading in the design and hierarchy of the content in menu bars must have The main window contains a combination of a navigation pane a Map window tables graphs and property screens Beneath the central form there is room for a message box must have Let the way to use GIS functionality in Ringtoets resemble the way to use it in existing GIS tools should have Input of all data and display of all results should be possible via the menu Additionally data and results should be accessible via a GIS map and or via the data navigation tree wherever applicable must have The active mechanism is to be selected for assessment one level higher than the active mechanism section The selection of the active mechanism can be controlled via the menu bar separate navigation pane extra form docking or tabs in the central form must have The navigation pane will give access to different sections and cross sections along the dike location line and to the filtered data connected to these sections and cross sections should have The main menu will be unfoldable to a limited number of levels two should have Modeless forms are preferred above modal forms Information in modeless form is actively linked to selected objects in another form e g maps in project canvas A modal form cannot lose focus w
57. W Ontwerppeil Design water level Waterniveau aan het eind van een ontwerp verbonden aan de wettelijk opgelegde herhalingstijd Ringtoets Requirements and Design B 3 1207804 001 DSC 0002 16 May 2013 final Navigatie paneel Navigation pane Navigatievenster met model items van het geopende project Numerieke integratie Numerical Probabilistische methode berekent de faalkans NI Integration door numerieke integratie over alle stochastische variabelen Numerieke Numerical Time Refereert naar een alternatieve methode voor tijdsintegratie NTI Integration FBC waarbij de vorm van het verloop van een afvoergolfof meerpeil wordt gemodelleerd door hem op te delen in stukjes met elk een duur van At De NTI methode in combinatie met NI is vergelijkbaar met de methode die de Hydra s gebruiken voor de berekening van toetspeilen en hydraulische belastingniveaus Ondergrond Subsoil Ondergrond van het dijklichaam Ondergrondprofiel Subsoil profile Opbouw van de ondergrond in grondlagen 1D o f 2D Ondergrondscenario Subsoil scenario Ondergrondprofiel met een bepaalde kans op voorkomen in de ondergrondmodellering Opbarsten Heave Opbarsten van de deklaag door opwaartse grondwaterdruk in de onderliggende watervoerende laag Oprollen Combining Combineren van faalkansen voor elementen met ongelijke ontwerppunten gebruikmakend van Hohenbichler Opschalen Upscaling Combineren van faalkansen voor een aantal elementen tijd of ruimte ele
58. abase with hydrodynamic data import or input fetch lengths per wind direction e Use Hydra Ring to calculate the wave data for a revetment assessment See 0 details e Use Hydra Ring to compute overtopping probabilities as a function of crest height using a schematized surface See UC 27 for details A3 Perform level 0 assessment e Select the mechanisms that can be excluded in advance along which part of the flood defence system based on a relevance check A4 Perform level 1 assessment e For heave piping and slope stability checks input or import the piezometric heads at polder side e For all mechanisms apply geometry based level 1 decision rules along the defence system when applicable and decide which parts of the flood system can be excluded for further assessment e View results per mechanism cross sections along the dike location line requiring level 1 or level 2 assessment The associated output is illustrated in Figure 2 3 e Optional export previously inputted or modified data See from UC 28 page 48 to UC 31 for details on step A4 5 Wave parameters for revetment at different heights need to be determined in the so called design point illustratie punt with a special approximated limit state function such as R H fig where R is some user defined measure of strength 6 According to CNS 6 Ringtoets will not support the decision rules for a relevance check 7 According to Lit 6 12 it is assu
59. ample Ringtoets Requirements and Functional Design 27 of 127 3 3 8 FR 45 FR 46 FR 47 FR 48 FR 49 FR 50 FR 51 FR 52 FR 53 FR 54 FR 55 FR 56 FR 57 1207804 001 DSC 0002 16 May 2013 final cluster results per water depth vs dike system dijkring A good example is the 4 D table in the PC Ring application should have Start multiple sessions on one computer to compare different Ringtoets assessments should have Import results from previous sessions and compare results in combined graphs nice to have Present a report with the tabular output of different calculation types see FR 39 must have The results report format must be such that information is grouped from general aggregated information to detailed information should have Add a summary table at the beginning of the report and an overview of all input parameters and settings should have Show graphs of the different results for different divisions in axial direction using the axial coordinate as x axis should have Present the semi probabilistic assessment results graphically and tabular for different mechanism sections and combination sections must have Present the assessment results graphically and tabular for different mechanism sections and presentation sections must have Make the report format suitable for exporting to MS Excel must have Make the report also suitable for exporting to HTML PDF XLS and o
60. and table section all display the same selection of a certain object Delta Shell Light uses C components of the DevExpress and DotSpatial libraries These libraries contain many different components for editing visualization reporting and exporting Delta Shell Light uses these features to create applications with a standardized look and feel 62 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Toolkit DotSpatial Display a map open shapefiles grids rasters and images in a components map render and reproject map data etc DevExpress Various Ul components navigation pane editors grids tree lists components ribbon bars reports and charts printing and exporting in various formats HTML PDF XLS CSV etc 5 2 2 Menu and toolbar The main form will have a menu and toolbar The menu will tentatively contain the following menu and submenu items Bestand File Creates a new Ringtoets project dabase Openen Open Selects an existing Ringtoets project database Project Re defines the properties of the open project UC 6 eigenschappen Properties Opslaan Save Saves the current ringtoets project data or if not UC 8 saved before performs save as behaviour Opslaan als Save Opens a dialog asking where to save the Ringtoets As project database List of most recently used projects e Importeren Import Import key data from GIS and soil database using UC 9 a preconfig
61. and Functional Design 75 of 127 1207804 001 DSC 0002 16 May 2013 final Data item shape type Linking routine polygon Apply to nearby cross section PiezometricHead DikeCrossSection Polder level polygon Project polygon on dike line DikeLocation Apply to nearby cross sections PolderLevel DikeCrossSection Breakwater line Project breakwater on dike line Breakwater Mark begin and endpoint as dike DikeLocation locations Link breakwater to DikeCrossSection affected cross sections 5 3 1 4 Partial safety factors Partial safety factors are necessary for the semi probabilistic assessment level 2a The partial factors will only be applied to strength parameters resistance and not to the load parameter In theory it is possible to apply partial safety factors either on the overall calculated strength of a mechanism or on the individual strength parameters such as material properties There will be a switch per failure mechanism to distinguish between an overall partial safety factor or partial safety factors per strength parameter The above mentioned switch and all partial safety factors are part of configuration data This means that the user can inspect the factors in the userinteface per mechanism UC 35 but cannot modify them If the switch is set to overall the strength parameters accepts only u and o as input and have a characteristic values as output If the switch is set to parameters th
62. andvoorwaarden database het Hydraulische Randvoorwaardenboek Ilustratiepunt Design point De combinatie van parameters waarbij falen Ontwerppunt optreedt met de hoogste kans op voorkomen De FORM methode maakt gebruik van een gelineariseerde faalkansfunctie Het punt wordt gevonden door het afschatten van de gradi nten in het ontwerppunt Karakteristieke lijn Characteristic line Lijn parallel aan de dijk lijn die een bepaald karakteristieke punt in verschillende dwarsdoorsneden verbindt Kerngegevens Key data Onmisbare gegevens voor het opzetten van de dijk schematisatie Deze kerngegevens worden doorgaans beheerd door de waterschappen in een GIS Kunstwerken Structures Civieltechnische constructies die onderdeel zijn van de primaire waterkering Lengte effect Length effect De toename van de faalkans bij toename van de dijklengte Limit State Function Beschrijft de grens tussen falen niet falen voor LSF verschillende combinatie van stochastische parameters Macro instabiliteit Slope instability Afschuiven van het dijktalud Mechanismevak Mechanism section Een dijkvak waarop de sterkte eigenschappen en belastingvariabelen voor een zeker mechanisme homogeen zijn MC C MC C Probabilistische methode Crude Monte Carlo sampling MC IS MC IS Probabilistische methode Monte Carlo importance sampling Mechanisme Mechanism Zie Faalmechanisme Menubalk Menu bar Een balk met keuze opties bovenin het beeldscherm MH
63. assessment on level 1 or 2a for dikes and structures 1207804 001 DSC 0002 16 May 2013 final Constructies Schematize for structures and calculate results per constructie sterkte structure for a level 1 2a or 2b analysis Structures Structural Strength Constructies Calculate results for non closure of structures for a Niet sluiten level 1 2a or 2b analysis Structures Nonclosure Duinerosie Dune Schematize for dune erosion and calculate results erosion per cross section for a level 1 analysis or per dike section for a level 2a or 2b analysis Combinatie Combine the results on cross sections level 1 Combine combination sections level 2a or presentation sections level 2b Toetsniveau Description UC Assessment level Assessment level Select assessment level from pull down menu Gedetailleerd Za Relevantie 0 Ever Gedetailleerd Za Probabilstisch zb J Relevance 0 geometry dike location and expert judgment Eenvoudig 1 Simple Execute assessment on level 1 for selected mechanisms UC 31 1 Inspect results for all selected mechanisms on level 1 for cross sections Gedetailleerd 2a Detailled 2a Inspect results for different mechanisms on level 2a for mechanisms sections Inspect results for different mechanisms on level 2a for combination sections Probabilistisch 2b Execute assessment on level 2b UC 42 Probabilistic 2b Inspect level 2b results on di
64. ation Rules NFR 15 A documented test bench of unit tests and integration tests is required to guarantee that numerical results are reliable and to prove that new versions give no unintended differences with previous versions The current requirement is that at least 95 of the code of the computational core will be covered should have NFR 16 Additional evaluation and acceptance tests need to emphasize the following aspects a The calculated boundary conditions should be comparable to those of the Hydra systems if common procedures are used must have b The results should be comparable to those of PC Ring for the water systems and probabilistic procedures common to both should have c The results from deterministic mechanism models must be comparable to the results from existing VTV software for deterministic cross section analysis as long as the schematization and boundary conditions are equal must have d The practical applicability robustness and performance under representative circumstances must be proven during the evaluation period must have Recoverability NFR 17 Ringtoets should have an auto save function enabling recovery in case of unexpected disruptions during a user session should have Recovery of the project database by means of an external backup will be the full responsibility of the system administrator System availability and support NFR 18 Version 1 of Ringtoets software plus hydraulic databas
65. bability is below a certain allowed value as derived from the failure probability budget Detailed probabilistic The result of the detailed probabilistic assessment assessment for combinations will be the annual FP for the each failure mechanism of sections and mechanisms per section as well as an overall failure probability for the combined failure mechanisms and sections 2a Detailed semi probabilistic The ratio between the conservatively determined assessment per section and deterministic strength and load is usually expressed mechanism via a factor of safety FOS The use of partial safety factors ensures that when the FOS is larger than 1 As part of a level 2 assessment the total stretches of dunes and dikes are divided by the user into different longitudinal mechanism sections Inside each of these sections the different input parameters for the considered mechanism model s are assumed to be more or less constant but uncertain The length of a section should be sufficient large for a failure mechanism to occur In case of a semi probabilistic assessment level 2a the assessment results from different mechanism sections OK or not OK are combined on so called combination sections The joined boundaries of all different mechanism sections determine implicitly the division into combination sections The purpose of combination sections is to decide for which parts a semi probabilistic assessment is sufficient when considerin
66. by small dike section points indicating the begin and end of the dike section Editing dike sections comes down to Coloring dike sections and dike lines can be done in the following ways The user can select this with a drop down list in the toolbar of the map editor Display Input Input values for the selected failure mechanism such as revetment Assessment level The needed assessment level and whether it fails or passes Section failure probability The failure probability per dike section This depends on the selected failure mechanism or combined or presentation sections Dike line failure probability Same as section failure probability but for the whole dike line Labels appear with appropriate information about what is displayed 5 6 2 1 General map operations The user can perform the following general GIS actions General GIS features including mouse scroll functions Select item Select an item with the mouse pointer Its properties are shown in the property window at the right side of the screen This layer can be hidden or made visible information edited in a legend Ringtoets Requirements and Functional Design 89 of 127 1207804 001 DSC 0002 16 May 2013 final Each layer except a WMS layer can be saved to a shape file Add remove Background layers can be loaded from shapefile or retrieved background layers via a WMS server e g OpenStreetMap They can be removed as well Reorder layers The laye
67. c results must enable all users to trace back the correctness of the implemented mechanism models should have NFR 9 Output of intermediate probabilistic results in combination with documentation of the theoretical background must enable expert users to trace back the correctness of the probabilistic procedures must have General Performance No formal performance requirements have been set During the evaluation period it will be determined if the computational performance is satisfactory under practical circumstances Capacity NFR 10 The maximum number of simultaneous users that view results of a single project database is limited to 5 should have NFR 11 The maximum number of users that simultaneous can edit one single project database is limited to 3 The users can only edit part of the project area should have Ringtoets Requirements and Functional Design 31 of 127 3 4 7 3 4 8 3 4 9 3 4 10 1207804 001 DSC 0002 16 May 2013 final Reliability requirements NFR 12 The user interface may not cause crashes during regular usage must have NFR 13 The computational core must be robust in the sense that a input parameters or stochastic variation of parameters cannot upset the computations b iterative procedures converge to the true solution c output parameters are checked for valid ranges must have NFR 14 Consistency between the input data and the output data must be guaranteed must have Valid
68. creen Beeldscherm The screen user interface of the Ringtoets application Semi Semi probabilistische A deterministic assessment level 1 or 2a using probabilistic toets conservative characteristic values for loading and analysis strength parameters together with partial safety factors The safety factors are calibrated such that the failure probability will always stay below the allowed value Section vak Part of the flood defence system with more or less homogeneous loading and strength properties Simple Eenvoudig toetsing Simple assessment of a dike section level 1 assessment using failure mechanism models requiring only geometrical data Slope Macro instabiliteit The mechanism that causes slope shear failure of instability dike embankments Structures Kunstwerken Civil structures build as part of the defence system Sub Deelmechanisme A submechanism which only causes failure when mechanism combined together with another submechanism Subsoil Ondergrond Subsoil of the dike s basement Subsoil profile Ondergrondprofiel A sequence of subsoil layers either 1D or 2D Subsoil Ondergrondscenario A subsoil profile with certain occurrence scenario probability in case of stochastic subsoil modelling Surface line Dijkoppervlak The surface line of the dike in the cross section including the relevant part of the waterbed and the hinterland System Systeemarchitectuur The hardware design of an application Archit
69. d d based on the VTV 2017 CNS 9 According to Rijkswaterstaat the final reporting of assessment results by the regional water authorities in a fixed digital format is not a part of the required Ringtoets functionality Instead a connection to an external reporting module such as Toetsrap is envisaged The specification of such a module is therefore not a part of the current Ringtoets definition CNS 10 The first product version of Ringtoets is not expected to offer automated design capabilities i e functionality for automated determination of the required geometrical and physical properties similar to the DAM software The Ringtoets design must however allow for such an extension in the future CNS 11 Ringtoets will supply some basic data visualization and data elaboration options as found in GIS systems and spreadsheets and use data connections to existing external GIS systems and or spreadsheet software for further functionality This means that Ringtoets will not fully replace the functionality of already existing GIS and spreadsheet software This philosophy is shared with the Hydra s and with the DAM software Further details on the supported options will be supplied as part of the definition of the requirements chapter 3 and the use cases chapter 4 CNS 12 Possible access to a remote Ringtoets installation via a Citrix web client is a minimum requirement for Rijkswaterstaat It is however not a Rijkswaterstaat requirement o
70. d models will be accessible 1 through a tabbed settings form 2 through an easy access button on action forms For relevant settings and parameters that can change per cross section or mechanism section Ringtoets will give the option to define global defaults and then define per cross section whether these defaults should be overruled When a user changes input of certain parameters or settings Ringtoets will automatically remove all already calculated results affected by this input A subsequent calculation action will be limited to the re calculation of the missing part Installation of Ringtoets Installation of Ringtoets starts with reading the installation manual and starting the program setup UC 1 Install Ringtoets The system administrator downloads the installation software and associated manual from the download server or uses a CD ROM The system administrator reads the installation manual This manual provides information on the setup procedure project file names hardware and network requirements for the Ringtoets application The system administrator starts the program setup of Ringtoets for installation on a local PC or on a Citrix server farm The install program asks for a a destination folder for the Ringtoets application and the selected hydraulic databases b the selection of one or more hydraulic databases to install from a list Finally the setup checks the operating system incl version physical requi
71. data at the Start of the project Execute level 1 Assessment Level 1 is a simple assessment based on deterministic design rules The assessment is performed per mechanism at cross section locations The assessment will only be applied to cross sections that are not marked with a level O status Ringtoets will call Hydra Ring for the computation of the characteristic water level and wave parameters per cross section usually in combination with an overtopping calculation For this purpose a schematization of both the foreland and outer dike slope are necessary The user can select certain cross sections for this first hydraulic boundary schematization For the cross sections in between Ringtoets will use interpolation to determine the hydraulic boundary conditions Ringtoets will need to pass data from the project database to Hydra Ring and vice versa Ringtoets Requirements and Functional Design 103 of 127 1207804 001 DSC 0002 16 May 2013 final Figure 5 24 Activity diagram for a level 1 assessment 5 8 2 2 Inspect level 1 results Ringtoets will execute a level 1 assessment at the cross sections that were not marked by the user with level 0 Level 1 is a simple deterministic assessment based on decision rules The result indicates only if cross section passes the assessment or not Ringtoets will mark the cross sections that pass with a level 1 status The remaining cross sections will be marked for further assessment leve
72. ding uplift of the protecting cover layer at the land side see Figure 1 7 Another example is the failure of the inner slope due to erosion or instability after a preceding occurrence of overtopping Ringtoets Requirements and Functional Design 9 of 127 1207804 001 DSC 0002 16 May 2013 final Failure due to piping Piping incl heave Figure 1 7 Example of the fault tree for failure mechanism piping Submechanism failure is predicted on the lowest level by cross sectional models requiring input that is partially model specific A cross section can contain different zones of revetment which need to be assessed per zone 10 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final 1 7 2 Assessment levels and section divisions The safety assessment for different failure mechanisms according to the VIV 2017 must be executed stepwise on different levels according to Figure 1 4 and Table 1 1 Table 1 1 Overview of assessment levels Level Type of assessment Outcome __ O Z O O O Relevance check per cross When the failure mechanism is not relevant for a section and mechanism cross section the annual failure probability FP is assumed to be zero Simple semi probabilistic When the result of the simple assessment is positive assessment per cross section the annual FP is below a certain allowed value as and mechanism derived from the failure probability budget the failure pro
73. distance When there are two output points in that area Ringtoets will couple both output points to that cross section Figure 5 16 The database parameters are calculated by interpolating the values from both output points using the mutual distances to determine their relative influence No link is made if one or zero output points are found inside the outer threshold The links between the cross sections to the output points are displayed A thin light colored line in the Map Editor visualizes the links The cross sections without a link get a different striking color e g orange Manual linking of cross sections to one or two output locations is possible via the cross section list window or via the map see UC 20 Removing links is possible as well 90 of 127 Ringtoets Requirements and Functional Design 5 6 2 3 5 6 2 4 1207804 001 DSC 0002 16 May 2013 final Outer Ri Ten threshold 7 Inner Pl Output point thresholds Ze eS y i l Cross section without link T Link Cross section Figure 5 16 Automated linking of cross sections to output points of hydrodynamic database Cross sections without a linked output point are allowed for level 1 assessment In that situation additional interpolation of the hydraulic boundaries from adjacent cross sections is necessary For level 2a a linked output point is required to a characteristic cross section of every mechanism section Linking Breakwaters to Cross Sections
74. ditions are used They are modeled as follows Figure 5 8 Data Classes for Hydraulic Boundary parameters CombinedSwell Has swell properties which are the result of a weighted combination of underlying swells CombinedWaterLevelSetup Similar as combined swell CombinedFetch Similar as combined swell 5 3 2 2 Assessment control model The assessment model contains data needed by assessments and the failure mechanisms they use The assessment model will refer to key data Soil profiles are essential inout data for a dike cross section The collection of soil data for the assessment also depends on the failure mechanism and the failure mechanism section division DikeLineDivision MechanismDikeSection Some additional soil parameters are mechanism specific for example the damping factor for the failure mechanism piping 78 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Figure 5 9 Classes for Assessment control Ringtoets Requirements and Functional Design 79 of 127 1207804 001 DSC 0002 16 May 2013 final Figure 5 10 Classes for probabilistic configuration The classes have the following meaning AssessmentModel Gives access to all data needed for an assessment AssessmentMechanism Calculates the limit state value for AssessmentNeeded Indicates whether assessment is needed per assessment level failure mechanism and dike section DikeLocation Location or stretch along a dike
75. division is equal to the combination section division from level 2a To combine level 2b results with level 1 and level 2a results the failure probability budgets of these dike stretches are needed 5 8 4 2 Execute level 2b assessment Level 2b assessment is a full probabilistic assessment which means that stochastic variables are used for load and strength computations Note that it is not mandatory to model all parameters as stochastic variables Instead Ringtoets can also use for selected parameters also the same unfavorable values as in a semi probabilistic analysis A level 2a assessment can be easily replaced by a level 2b assessment as no additional data is needed In case of a combination with level 1 assessed parts Ringtoets wil need to reduce the admissible failure probability for level 2b if the maximum failure probability of some level 1 assessed parts is significantly larger than zero Ringtoets will call Hydra Ring twice for the execution of Assessment level 2b e First for the calculation of failure probabilities per mechanism section the mechanism section loop is expected to be part of Hydra Ring Output are the Failure Probabilities FP and design points per mechanism section e Second for combination of failure probabilities to presentation sections and to combinations of presentation sections Ringtoets will need to pass data from the database to Hydra Ring and vice versa 108 of 127 Ringtoets Requirements and Funct
76. dynamic and statistical data RWS Een Water levels and waves Further schematization per failure mechanism e Division in sections with representative cross section e Simple models less data required e Detailed models less conservativeness required Iteration Flood Defence schematization loop Safety assessment e Deterministic per section and mechanism e Probabilistic for combined sections and mechanisms Assessment results Report results Figure 1 5 Work Flow Safety Assessment Ringtoets covers all tasks which are coloured green The additional containers show the initial data white and project data yellow The Water authorities are responsible for delivering the flood defences key data and for executing the schematization and assessment Rijkswaterstaat RWS is responsible for delivering the hydrodynamic and statistical data and delegates the production to Deltares The hydrodynamic data is contained in different physical databases for different regions The project database content flood defence schematizations hydraulic boundary conditions and assessment results is coloured yellow Section 2 3 contains a more detailed description Ringtoets Requirements and Functional Design 5 of 127 1207804 001 DSC 0002 16 May 2013 final 1 4 4 Stakeholders and users Rijkswaterstaat is responsible for delivering the assessment tools including the format and content of the hydrodynamic database as well as for
77. e The following property editors are displayed Ringtoets Requirements and Functional Design 97 of 127 1207804 001 DSC 0002 16 May 2013 final Property editor contents SoilProfile1 D Geographical location and list of all soil layers an with top and bottom and assigned soil Soil properties assigned to the soil profile and possibility to select another soil Available soils are retrieved from the soilbase model SoilProfile2D Geographical location and list of all soil layers me with assigned soil Soil properties assigned to the soil profile and possibility to select another soil Available soils are retrieved from the soilbase model Geographical location and list of all soil a profiles with their probability m ae their coordinates and characteristic type eae ee per wind direction Swell Swell properties S Soo o Water level setup Water level setup properties O Jo Structure properties Breakwater properties Dike section Geographical and administrative information and assessment options whether to include in assessment Assigned combined hydraulic boundaries In case of combined hydraulic boundaries a list is supplied with contributions of underlying hydraulic boundaries Soil profile with the possibility to select another soil profile Surface line with the possibility to select another surface line Failure mechanism specific data for the dike section Reliability and design point details default is us
78. e Bekleding Revetment Input data for different revetmentrevetment zones 1 e Stijghoogtes Piezometric Input data for the piezometric heads at head land side on different horizontal locations along the dike location line e Dwars profielen Cross Input data for the cross section locations section profiles and surfaces including links to output locations e Ondergrond Subsoil Input data for the subsoil profiles soil C c c OON c OS ND IN types and parameters of soil types for different 1D or 2D subsoil profiles in different areas bodemvakken e Uitvoer locaties Output The available output locations of the locations hydraulic loading with the input option to define fetch areas 64 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final process Work process Select work process to limit the amount of visible tables Map data and property data Schematisatie Schematisatie l Resultaten Kerndata Key data View and modify key data UC 10 Schematisatie Schematize mechanism related data Schematize Link cross sections to output locations UC20 Link cross sections to rouble mounds UC 13 ee Define fetch areas at the output locations View edit auxiliary parameters and settings UC 23 Resultaten Results View results UC 31 UC 36 UC 43 Alle All View all o d O Toetsen Assess Toetstaak Task Select an assessment task in o
79. e Pe T golfoploop 1 ere pe T golfoploop 2 erm pe T golfoploop 3 sss Ba G O G S voor brekende golven ze e voor niet brekende golven Eed voor ondiepe golven The stochastic properties are the following 1 verdelingstype distribution type deterministisch deterministic or normal normal or lognormal lognormal 2 verwachtingswaarde mean value 3 standaardafwijking standard deviation or variatie coefficient variation coeffient 4 correlatie lengte correlation length 5 ruimtelijke restcorrelatie spatial correlation coefficient rho_x 6 correlatieperiode correlation period 7 restcorrelatie voor de tijd temporatal correlation coefficient rho_t Contrary to PC Ring Ringtoets will not give the option for input of auxiliary user defined Hydraulic Load parameters in case these parameters are not part of the hydraulic boundary conditions database These auxiliary parameters are specifically a golfhoogte wave height and golfperiode wave period per wind direction for deining swell and a combined water level opzet setup for the effect of seiches squall UC 24 For the purpose of an overflow overtopping revetment assessment per cross section Select the cross section in the Navigator window The Overslag Profiel Overtopping Profile tab in the Properties window will give the possibility to 44 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final define a schematized
80. e individual strength parameters accept u o and yi as input The output is the design value 5 3 2 Assessment model schematized data and results 5 3 2 1 Schematized data Dike lines are subdivided for a level 2 assessment into dike sections mechanism sections combination sections and presentation sections A mechanism section relates key data and additional hydraulic boundary data via the location of a characteristic cross section inside the mechanism section 76 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Figure 5 7 Data Classes for Dike location The classes have the following meaning DikeLineDivision Definition of a division of dike into sections Note that soil model doesnt refer to this class It will be used by the assessment model NL vakindeling dijklijn mechanisme vakken DikeLocation Location or stretch along a dike DikeCrossSection Cross section which is used at level O and 1 The location coincides with a schematized surface line Cross sections have default names DikeSection Dike section which is defined as a stretch along a dike and using the key and hydraulic boundary data from a Ringtoets Requirements and Functional Design 77 of 127 1207804 001 DSC 0002 16 May 2013 final representive DikeCrossSection Since dike sections refer to hydraulic data which are considered representive for the dike section sometimes combined hydraulic boundary con
81. eave will occur at some location along the polder side In case of heave compute the critical differential head the minimum piping length and the Factor of Safety using the prescribed mechanism models View relevant output details e Overflow overtopping Define the partial safety factors to be used Per section Select the characteristic cross section surface already schematized in step A2 Compute and view relevant output details on that cross section B4 Optional Combine semi probabilistic results from different mechanisms and sections e Check at which stretches the result from semi probabilistic analysis for any of the mechanisms is insufficient Stop if semi probabilistic checks along the total flood defence are sufficient for all mechanisms e Optionally export the semi probabilistic schematization and results See from UC 32 page 50 to UC 36 for details on step B Ringtoets Requirements and Functional Design 19 of 127 1207804 001 DSC 0002 16 May 2013 final C Partially probabilistic assessment Level 2b level 1 Partially probabilistic check per relevant mechanism section level 2b level 1 e FP value per mechanism and layer either probabilistically calculated value for level 2 sections or semi probabilistic upper limit for level 1 sections FP Mechanism 1 FP Mechanism 2 FP Mechanism 3 Probabilistic output for presentation sections e Combined FP for all mechanisms per presentation section e
82. ect one or multiple surface line points and move or delete them The user can define or redefine the location of characteristic points manually by dragging them to the desired surface points Ringtoets Requirements and Functional Design 41 of 127 UC 17 UC 18 1207804 001 DSC 0002 16 May 2013 final UC16 c In the Cross Section window the initial revetment zone locations are projected on the surface line The user can adjust the initial location manually by dragging the revetment zone boundaries horizontally Ringtoets will give a repair action if the revetment zones do not cover the whole surface from outer toe to outer crest For an uplift neave piping assessment Select the Beeld View gt Tabellen Tables gt Grondprofielen Soil profiles command from the menu bar to add or modify Subsoil profiles grondprofielen Select the Beeld View gt Tabellen Tables gt Grondsoorten Soil parameters command from the menu bar to add or modify Subsoil parameters grondparameters Editing and presentation options for the subsoil data will be completely equal to the options provided by the DSoilModel application When a sub soil library has already been imported or defined then the available 1D or 2D soil profiles soil types and soil type properties for piping and slope stability will be available as a start together with a definition of the stretches segments along which one or more subsoil profiles are valid UC17 a A user can define
83. ecture Tab Tabblad Tabs are used to switch between different forms Tidal period Getijperiode A period of approximately one tide relevant in the load modelling for an arbitrary discharge wave A 4 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Upscaling Opschalen XML XML shape Combining failure probabilities for a number of elements time elements or spatial elements with equal FP Self describing data format suited for exchange Ringtoets Requirements and Functional Design through files or web services A 5 1207804 001 DSC 0002 16 May 2013 final B Glossary of terms Dutch to English Begrippen in schuinschrift worden in het rapport niet gebruikt Dutch English Beschrijving Afvoergolt Discharge wave De aangenomen ontwikkeling in tijd van de rivierafvoer gedurende een hoogwaterperiode Afvoerpiek Discharge peak The hoogste afvoer in een gemodelleerde afvoergolf Arbitrary Point in Refereert naar een alternatief rekenschema voor Time FBC waarin een trapeziumvormig verloop van een afvoergolf of het meerpeil wordt gemodelleerd middels een extra stochastische variabele voor het evaluatietijdstip binnen de afvoergolf Beeldscherm screen Het beeldscherm van het programma Ringtoets Bekleding Revetment Bekleding van een dijklichaam Deze bestaat doorgaans uit verschillende geometrische zones met elk een bepaald bekledingstype en daaraan verbonden eigenschapp
84. ed Dike line Administrative values of the dike line and a table with combined failure probabilities per mechanism and combined over all mechanisms List with all bending points in dike line Characteristic line Meaning of characteristic line and list with all bending points Project Project Project administrator administrator 98 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Property editor contents Main project Hoofd database location projectdatabase locatie Main project Hoofd database checked projectdatabase out sections uitgecheckte delen Location Hydraulic Locatie Boundary database Hydraulische randvoorwaarden database files bestanden Pre configured Vooraf mapping table geconfigureerde koppeltabel Failure mechanism General properties of the selected failure mechanism Assessment model Default properties of the selected assessment model General calculation options including the calculation scheme and probabilistic method For assessment model 2b probabilistic properties are displayed for the selected mechanism For 2a and 2b a list is displayed with all available failure mechanisms where the user can specify whether it should be used in the assessment 5 6 5 Tables and charts Tables and charts are displayed with close relationship to each other Within a table chart window both a table and a chart are displayed The cha
85. either a DikeCrossSection or a DikeSection DikeLineDivision Defines a division of a dike line into dike locations or dike stretches Per failure mechanism a dike line division exists but also for combined and presentation sections and for cross sections for assessment level 0 and 1 The dike line division contains a list of division points This is a list of Geograpics which define the limits of the dike sections The same IGoegrapic instances are oresent in the dike sections A failure mechanism calculation MechanismDikeSection A dike section defined for a certain mechanism OvertoppingDikeSection A dike section defined for overtopping An overtopping dike section is linked to a user defined mechanism section via DikeLineDivision DikeLocations MechanismDikeSection The mechanism section is 80 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final linked to a schematized surface line and cross section via a DikeLocation The cross sections is linked to geometric data soil data and hydrodynamic data This schematized surface line is called charcteristic cross section UC34 d List of non default values for allowable overtopping discharge NL non default waarde voor toelaatbaar overslagdebiet OvertoppingMechanism Performs an overtopping calculation for one dike section List of allowable overtopping discharge NL toelaatbare overslagdebieten PipingDikeSection A dike section
86. el 2a OK sections as input for the level 2b assessment With the check box Select all the user can select all available mechanism sections as input for level 2b except for level 0 stretches at once This check box is located in the level 2b assessment calculation form 5 8 4 2 Ringtoets Requirements and Functional Design 107 of 127 1207804 001 DSC 0002 16 May 2013 final Ringtoets can accept a stochastic definition for many model parameters These model parameters are imported as key data and or edited in property forms and tables The user must modify move characteristic points if they don t comply with the more stringent constraints Probabilistic input is possible for the mechanisms overflow overtopping and revetment At writing of this report this functionality will not be implemented yet It is possible to input stochastic soil profiles for piping For one cross section the user can for example select three 1D soil profiles from the soil database Each profile gets a certain probability and the summed probabilities is 100 If only one soil profile is available it automatically has a probability of 100 The level 2b assessment computes the combined failure probabilities of all failure mechanisms on presentation sections Presentation sections are groups of the combination sections from level 2a The user must define the presentation sections in advance of the level 2b calculation By default the presentation section
87. en Bestandsformaat File format Bestandsformaat meestal gedefinieerd voor de uitwisseling van specifieke gegevens Blok Block Refereert binnen het FBC rekenschema naar de rechthoekige vorm van een tijdsafhankelijk proces zoals een hoogwatergolt Blokduur Block duration De duur in de tijd van een tijdsafhankelijk proces dat geschematiseerd is als een blok Centrale dialoog Central form Centrale dialoog van het programma beeldscherm Combinatievakken Combination Vakindeling die resulteert uit het opbossen van sections de indelingen voor verschillende mechanismen ten behoeve van een semiprobabilistisch toetsresultaat voor gecombineerde mechanismen Dagenlijn D Q Het gemiddelde aantal dagen in de winterperiode waarbij de rivierafvoer een bepaalde waarde overschrijdt Dijksterkte Analyse Module voor geautomatiseerde schematisatie analyse en ontwerp op basis van geotechnische faalmechanismen DAM wordt ontwikkeld onder regie van STOWA Deelmechanisme Sub mechanism Een deelmechanisme dat alleen kan leiden tot falen in combinatie met een ander deelmechanisme Deterministische Deterministic safety De deterministische toetsing van de toetsing veiligheid assessment dijkveiligheid gebaseerd op deterministisch vastgestelde processen vaak leidend tot ruimte conservatieve veiligheidsmarges Dijk Dike Een dijk of dijklichaam Ringtoets Requirements and Design B 1 1207804 001 DSC 0002 16 May 2013 final Dijklij
88. ent UC33 a Selecting the Toetsen Assess gt Piping Dijken Piping Dikes command from the menu bar will show the relevant tables and options for Piping For a selected cross section Ringtoets will display the selected surface UC16 a in the cross section window together with the connected sub soil profile s UC 17 the polder level and the inland piezometric head If the number of connected soil profiles is larger than 1 then a probability of occurrence for each scenario must be available UC33 b The initial location of the piping entrance point in the cross section follows from a characteristic line UC 11 and can be modified by the user UC33 c Ringtoets will use a procedure similar to the DAM software to define the location of the exit point and the piezometric head distribution in the aquifer for each subsoil scenario with the help of a damping factor a leakage length a minimally required FoS and the weight of the cover layers Lit 6 14 Lit 6 15 The default damping factor is 0 3 the default leakage length is infinite and the default minimum Fos for uplift is 1 2 UC33 d Ringtoets will graphically display in the cross section window the resulting distribution of piezometric head and cover layer weight for uplift from the inner toe to the polder side together with an indication of the exit point the first location where the FoS for both uplift and heave are smaller than the minimally value UC33 e If no subsoil profile a
89. er retaining structures Failure of vertical walls and other structural elements in dike sections i e sheet pile walls provided the timely availability of suitable software models in the VTV 2017 failure mechanisms library Ringtoets Requirements and Functional Design 23 of 127 1207804 001 DSC 0002 16 May 2013 final 3 3 Functional requirements 3 3 1 3 3 2 The functional requirements will elaborate the relevant general requirements from section 3 2 to a more detailed level in order to define what a user must be able to do with Ringtoets See several use cases in chapter 4 for a more detailed specification Data connections FR 1 FR 2 FR 3 FR 4 FR 5 Ringtoets will supply a neutral XML interface for import and export of all processed and schematized data in the project database enabling third party development of connectors to specific formats and also enabling connection to web services must have Ringtoets will have an import and export connector to GIS via shp files and a configurable mapping table or translation table between the GIS data and the Ringtoets data This mapping table will relate data items in the different shp files to the Ringtoets data items must have Ringtoets will have an import connector to the same subsoil database as the one to which DAM Dike Analysis Module connects via CSV files must have For import from and export to spreadsheet tables Ringtoets will connect to
90. es requires the folllowing support in the period from 2017 up to and including 2029 must have The required support includes a a download server with the most recent version of software databases and documentation b updates of the software databases and documentation whenever required a helpdesk available during office hours a training program ao 32 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final NFR 19 In case of emerging new models after 2017 the Ringtoets development version will be separated from the product version by using branches in the version control system in combination with version tags The system availability for a particular user will depend on the server or local PC on which Ringtoets and the databases are installed Ringtoets Requirements and Functional Design 33 of 127 4 1 1207804 001 DSC 0002 16 May 2013 final Functional Design Use Cases Introduction The use cases presented hereafter intent to describe all different steps in the process of input schematization and assessment based on the detailed workflow in section 2 3 2 and based on the requirements in chapter 3 The interaction between the user and Ringtoets will be defined in terms of input forms GUI elements and output The use cases supply a basis for the technical design in chapter 5 and additionally define the required functionality which needs to result from different
91. es apply to more than one case 2 Ringtoets will allow for input or modification of the location of all objects in a tabular list and or property window and present the modified location in a map window Ringtoets will not support the graphical definition or modification of key data in the map itself as the regular procedure will be to use a fully featured external GIS system for that purpose Ringtoets will support additional graphical definition of mechanism sections in the map itself as this schematization task is primary executed in Ringtoets itself Each tabular object list and chart will have the option for import and export of CSV data additional to import and output through XML on a system level User modifications to imported data in property window and in object lists will be recognizable by a different presentation Any data modification and all calculation results are first stored in the Ringtoets memory Only when a user invokes a Save command the data are stored in central project database Each main item in the menu bar will preferably have only a single layer of sub menus Sub menus will give easy access to data windows for data manipulation and to action forms for user invoked actions User invoked actions such as import export and different calculations will be started from action forms giving access to single or grouped actions as well as to related settings Settings for different calculation procedures an
92. fferent mechanisms sections UC 43 Inspect level 2b results on presentation sections nn Description Define various options in an option window I Define units for input and output of various properties Lo ___Instellingen Settions Gives information on the Ringtoets version etc Help Description Handleiding Manual Gives access to the users manual in pdf o Over About Gives information on the Ringtoets version etc o Ringtoets Requirements and Functional Design 67 of 127 1207804 001 DSC 0002 16 May 2013 final 5 3 Data model Before starting the technical design related to different functions this section will first provide a description of the datamodel that is underneath in the different packages The reason for using this sequence is that the technical design of functions will refer back to the datamodel The datamodel itself will implicitely need to cover all the data 5 3 1 Key data The key data class contains the imported or inputted key data The following sections are present in the model for key data 1 Sub soil data 2 Water defence data 5 3 1 1 Key data Sub soil The soil database contains extended soil data including soil profiles and soil properties The data is stored in 3D spatial databases In top view the available soil data are point objects Advance GIS tools can calculate a soil profile at any location in the area In Ringtoets soil profiles at dike cross sections are necessary as input for fai
93. fine a project name and select the location of the project After confirmation Ringtoets will create and configure the project database in the designated location The user that has defined a new project has also to define the project settings The project form which is displayed when the user selects Gereedschap Tools gt Opties Options provides the possibility to define the project settings as defined in par 5 6 4 If the central Ringtoets project database is not accessible outside the local area network then it is still possible to share project data manually by using the import of XML files UC 46 Ringtoets Requirements and Functional Design 37 of 127 4 5 1207804 001 DSC 0002 16 May 2013 final UC 7 Each user can open an existing project In the menu bar the user selects Bestand File gt Openen Open Ringtoets opens a dialog in which the user can select a certain project database in a local folder on a LAN folder or on a remote server Ringtoets will load the project data and show the objects in the Map window UC 8 Intermediate save At any time during the session the user can select from the Bestand File menu the commands Opslaan Save Opslaan als Save as UC8 a The Opslaan Save command will cause an intermediate save of the project UC8 b UC8 c data to the project database including all changes and calculation results Untill that moment the data changes and any calculation results are only stored in Rin
94. fined in class diagrams which can be found in the following secions of this chapter The class diagrams tell us what data is linked but not how the links are created This section elaborates the basic design principles for linking object classes geographically The purpose of these design principles is to guarantee correct and validated links of object classes The principles will be used to design the linking routines methods The exact moment of activating linking routines is important for the performance of the UI Timely activating also guarantees that the most recent data is used Design princples for linking routines of key data e The dike line is the backbone of the model Every linking routine must check on the availability of it If a dike line does not exist the linking routine must be aborted Furthermore if there is any change or modification to the dike line all linking routines must be updated e All data is projected on the dike line A point on the dike line is called location point Generic projection methods are necessary for the projection of different types of data on the dike line using a perpenducular A point object for example a hydraulic boundary point must be projected on the closest dike location using the perpendicular On that particular spot a location point is inserted on the dike line and linked to the hydraulic boundary point The projection of a ine on the dike line is somewhat different Both the begin a
95. for setting up a dike schematisation Most key data will be imported from existing databases maintained by the water boards Length effect Lengte effect The increase in failure probability that results from considering longer stretches of dike or dunes Limit State LSF Describes the interface between failure and non Function LSF failure for different combinations of stochastic parameters Loop sequence Rekenschema Refers to the sequence of loops e g over time periods wind directions and mechanisms in programming code MC C MC C Probabilistic method Crude Monte Carlo sampling MC IS MC IS Probabilistic method Monte Carlo importance sampling Mechanism Mechanismevak A stretch of a flood defence with more or less section homogeneous properties and boundary conditions for the considered mechanism Menu bar Menubalk N Overschrijdingsduurliin Duration line N Q D Q F Q The average duration of the period in which Q exceeds a certain value Navigation Navigatie paneel Navigation pane with lists of editable GIS objects pane such as cross sections dike line and hydraulic boundary points Numerieke Refers to a method for modelling the shape of a tiidsintegratie temporal evolution of a discharge wave or lake level by discretizing it into sections of width At and combining the failure probability contributions of all sections The combination of NTI with NI gives characteristic water levels equal to the Hydra s
96. form UC 43 The user can inspect the results per mechanism section from the last executed level 2b assessment via the menu bar command Assess gt Level 2b The results for a selected mechanism are displayed for all selected mechanism sections The user can change the selected mechanism via a drop down box Toggling between a GIS view and a tabular presentation is possible The Map window will show the dike line and the location of the dike sections and characteristic cross section UC43 a The primary output of the computation is a failure probability and a design point values of stochastic variables for all available mechanism sections 13 It is still under discussion whehter the user should be able to change those values 54 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final UC43 b Secondary output is the failure probability per failure mechanism UC43 c The log file contains additional intermediate results These results include the different reliability indices and design points per wind direction per revetment layer per subsoil alternative per cross section etc UC43 d Conditional failure probabilities for design parameters For example what is the remainig failure probability if the water level has a reached a certain level optional Ringtoets functionality UC 44 The user can inspect the results per presentation section from the last executed level 2b assessment via a menu bar command
97. g all mechanisms together In case of a probabilistic assessment level 2b the user will be able to define additional presentation sections A presentation section consists of one or more combination sections A presentation section is used for combination of the failure probability contributions from different mechanism sections in order to determine if physical improvement of the section is required See section 2 3 for further details on the stepwise assessment and section divisions Ringtoets Requirements and Functional Design 11 of 127 1207804 001 DSC 0002 16 May 2013 final 2 Scope 2 1 System definition The main goal of Ringtoets is to support the required model schematizations by the user and afterwards execute an automated assessment of primary Dutch flood defences according to the VTV 2017 regulations Schematization means the process of producing model input for a subsequent assessment starting from already available key data Automated means that Ringtoets will execute the assessment for combinations of multiple mechanisms and sections It is intended that Ringtoets will finally replace PC Ring and the Hydra s which together offer similar functionality Ringtoets will have four main functionalities 1 Support for schematization using imported or inputted data for the purpose of assessment 2 Calculation of the hydraulic boundary conditions 3 Execution of safety assessments on different levels simple semi p
98. g cross sections are input for further assessment level 1 or 2 The user will be able to mark a dike section as level O in four different ways in the cross section editor in the map editor in the property editor and in a table Methods to mark a dike section as Level 0 section include the following By a button in the cross section toolbar e In the map editor by drawing a box with the mouse pointer The cross sections inside the box will become selected With a button on the map editor toolbox the user can mark the selected cross sections as Level 0 With a check box in the property editor of an activated selected cross section e In a table that lists all available cross sections A column Level 0 will be available in that table giving the user the possibility to set the Level 0 status for multiple cross sections in one go 102 of 127 Ringtoets Requirements and Functional Design 5 8 2 5 8 2 1 1207804 001 DSC 0002 16 May 2013 final Figure 5 23 Activity diagram for a level 0 assessment relevance check Assessment Level 1 A Level 1 assessment is a simple assessment Table 1 1 based on deterministic decision rules for different failure mechanisms Input for the dike strength calculations are characteristic points in the dike geometry but also other variables like entrance points and Piezometric heads Most input variables for the failure mechanisms both load and strength are imported or inputted as key
99. gtoets memory and are not part of the project database yet After the Opslaan als Save As command Ringtoets writes a full project database including the latest changes and calculation results under a new user defined name and or folder location Ringtoets will have an Auto Save function which frequently saves the changes and calculation results since the last normal save to a recovery file The auto save function will not save to the database If Ringtoets terminates in an exceptional manner the recovery file is used restore the previous session after a restart The same kind of recovery file is used when exporting latest changes UC 46 Import of key data When starting a new project the user will usually import key data from existing GIS based databases or from archived project data Key data includes all already processed data that is required for assessment Examples of key data are the dike line the cross section surface the structures in the dike system the revetment data and the subsoil library UC 9 In the menu bar the user will choose Bestand File gt Importeren lmport Ringtoets opens the mporteren Import dialog where the location type and name s of the files can be specified The supported file types are a XML files b shp and csv files Import ee D Program Files Deltares Fingtoets dataset piping dijkring1 0 shp Binnen tenen D Program Files Deltares Ringtoets dataset piping OR10_binnenteen
100. he characteristic cross section surface Compute the characteristic wave parameters and characteristic load durations at different heights along the flood defence system with Hydra Ring Determine the partial factor for the influence of section length Per revetment layer along the outer slope Compute characteristic values of physical properties using mean values and standard deviations from the material library Compute the factor of safety for failure by wave attack damage and Subsequent erosion depending on the revetment type using the prescribed mechanism models View relevant output details Uplift Heave Piping Define the partial safety factors to be used for physical properties and hydraulic loading Per section Determine the partial factor for the influence of section length Define the characteristic cross section surface Select the characteristic subsoil profiles in the cross section direction from the set of probable profiles and determine the associated schematization factor This results in a 1D or 2D schematization in cross section direction Import or define the schematized hydraulic head distribution in the characteristic cross section aquifers as a function of the external water level by an entrance point and a damping factor at the inner toe for each aquifer Compute characteristic values of physical properties for the mechanism models using mean values and standard deviations from the material library Check if h
101. he l O layer connects the internal or external databases to the UI layer and business layer 4 The business layer contains all functionality to derive the user requested output from the user supplied input 12 13 All layers connect to libraries for the functions that are shared with one or more other applications such as the stand alone VTV tools and or DAM Ringtoets Requirements and Functional Design 57 of 127 1207804 001 DSC 0002 16 May 2013 final Internal I O files for input and intermediate results External I O files for data management exchange and archiving Application 1 Application 2 Application 3 Data and I O components control read write convert and visualize Business layer components to compute output from input 2 z fa O Sn gt i LL Probabilistic library DeltaShell Light Figure 5 1 Generic architecture for the new generation of dike strength software The supported tasks in the main control layer are depicted in Figure 5 2 58 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Figure 5 2 Technical design of the main control layer The different Ringtoets packages groups of software components in the different layers are described below and depicted in Figure 5 15 Main Control Layer Ringtoets plugin Code which brings all other components together such as registration of UI compone
102. he shared failure mechanism and UI libaries for WTI dike assessing and designing tools Shared libraries allow for generic tool development and implementation which fits into the Rijkswaterstaat s vision to optimize the total support and maintenance costs of software applications 2 of 127 Ringtoets Requirements and Functional Design 1 4 2 1207804 001 DSC 0002 16 May 2013 final f Bibliotheek Ul User Interface componenten Bibliotheek Probabilistische technieken mm interface f adaptor Bibliotheek Faalmechanisme modellen Figure 1 3 Shared libaries for WTI dike assessement and designing tools Assessment method according to the VTV 2017 The current set of regulations VTV 2006 and supporting set of software Hydra s Steentoets Grastoets Golfklap D GeoStability MStab Duros etc is based on a partly probabilistic and partly deterministic safety assessment of dikes dunes and structures The Hydra software determines first in a probabilistic fashion the water level wave parameters and overtopping characteristics per cross section Further assessment for other failure modes mechanisms is executed per failure mode and per section using a characteristic water level with allowed exceedance frequency toetspeil as calculated by the Hydra s After an initial relevance check level 0 a simple assessment by a decision rule level 1 can be followed by a detailed assessment level 2 The simple assessment usua
103. hen required UC 16 After selecting the Beeld View gt Tabellen Tables gt Dwarsprofielen Cross Sections Surface command the user can add or select a cross section via a cross section object list or via the GIS map The Dwarsdoorsnede Cross Section window shows graphically the selected cross section surface line including the cross section name and the characteristic points For good readability the surface line diagram has a horizontal and vertical fixed axis and clear marks of the characteristic points Zoom and panning tools are available as well UC16 a In the Eigenschappen Property window the user can define in case of manual input or modify in case of already imported key data a surface line defining the relevant part from the water side to the land side Instead of manual input of a single surface line the window offers also the possibility to import the list of coordinates locally from a CSV file He can also add a new point Ringtoets will redraw the surface line The cross section editors axes system is LZ oriented L is perpendicular to dike line Ringtoets automatically translates the LZ coordinates to XYZ RD coordinates in the map and vice versa UC16 b In the Dwarsdoorsnede Cross Section window the characteristic help lines UC 11 are displayed as verticals Ringtoets can use these lines to determine the associated characteristic surface points karakteristieke punten automatically The user can graphically sel
104. ially assessed at different levels Presentation of assessment results Ringtoets can present the primary calculation results in tabular format Additionally some basic support will be supplied for graphs in time or space and for visualization of results on map GIS layers Output of detailed semi probabilistic results per mechanism and section is very important for a user in order to gain confidence in the quality of the output The contribution to the total probability of each individual failure mechanism at a certain section is of great use for the engineers Post processing will also be supported by output of data to xml or csv files section 3 3 8 14 of 127 Ringtoets Requirements and Functional Design 2 3 2 3 1 1207804 001 DSC 0002 16 May 2013 final Supported tasks and workflow Overview A schematic overview of the tasks to be supported at different levels for a regular assessment procedure is given in Figure 2 2 This scheme enables a part of the required assement according to the VTV 2017 as far as currently known Lit 6 6 It should be noted in advance that Ringtoets will not support Toetsen op maat and beheerdersoordeel see CNS 5 The presented scheme indicates that the initial relevance checks level 0 calculation of hydraulic boundary conditions and further geometry based assessments level 1 could be executed in principal at all considered cross sections The result of such a cross section analysis revea
105. icture N a S S Dike line line Dike points are added to list of DikeLine dike locations Existiance of a DikeLocation Dike line is prerequest for any linking routine Hydraulic structure line Begin and end point projected on Structure dike line DikeLocation Surface lines line Surface line has a location point SurfaceLine Link location point to dike line DikeLocation Surface line has angle relative to dike line orientation perpendicular Cross section point Cross section is a location point DikeLocation on dike line In cross section the DikeCrossSection dike geometry soil data and hydraulic boundaries are combined Characteristic lines lines Intersect characteristic lines with CharacteristicLn surface lines Create CharacteristicPnt characteristic points GeometryPoints SurfaceLine polygons Create dike surface points GeometryPoints Soil profiles from Import SoilSegments with SoilProfile1 D 2D DSoilBase polygons soilprofiles per segment including DikeLocation probability Segements have DikeSegments either 1D or 2D profiles Project DikeCrossSection soil segment polygon on dike line Assign cross sections to SoilSegments thus soil profiles Dike material point Assign top soil layer to dike profile SoilLayer1D as dike material SoilLayer2D Soil DikeCrossSection Piezometric head Project polygon on dike line DikeLocation Ringtoets Requirements
106. ilLayer2D Describes a 2D layer i e the thickness and position of the soil depends on the horizontal coordinate One can think of a polygon indicating the position of the soil Piping indication upper subsoil layer shallow aquifer at dike shallow aquifer next to dike second deep aquifer NL naam SoilSurfaceProfile Soil profile which consists of a deterministic soil profile and a surface line The surface line truncates the soil profile from the air SurfaceLine The surface line is a collection of points on the surface in such a way that it describes the contour of the dike Usually the points are collected from DTM and corrected for riverbed and ditch The points are supposed to be perpendicular to the dike line The surface line has a surface line location which is a point in RD coordinates and an angle which indicates the angle of the line with surface points with the RD latitude The points are defined with relative coordinates to the surface line location and angle X is distance to surface location Y is zero Z is real depth SchematizedSurfac A surface line which is based on a surface line but modified in such a way eLine that it can be used by a failure model This includes the definition of a number of characteristic points and possibly some additional bending points on the surface CharacteristicPoint Characteristic lines run parallel to the dike line and are imported as key data In the cross section editor the lines are
107. implementation tasks The description of the Use Cases and the technical design in chapter 5 both assume that the main window of Ringtoets will consist of a number of specific bars and subwindows These windows and theire functions are depicted in Figure 4 1 and listed below Menu bar access to all supported tasks and settings NL Bestand Bewerken Beeld Toetsen Gereedschap Help EN File Edit View Assess Tools Help Tool bar quick access to often used tasks and settings Data Filter for filtering the presented data in the different sub windows based on the selected data By default all is shown o NL Data Kerndata Schematisatie Resultaten Alles o EN Data Key data Schematization Results All Task Filter for filtering the presented data and available options based on the selected activity task There are tasks for the computation of hydraulic loads and for the assessment of dikes structures and dunes The hydraulic load and the assessement computations are further specified for different mechanisms o NL Hydraulische belastingen Waterpeilen in uitvoerlocaties waterpeilen in doorsneden overslag debiet overslag _ kruinhoogte golfparameters EN Hydraulic loads Water level in output locations water level in cross section overtopping discharge overtopping crest level wave parameters o NL Toetsen dijken Overslag bekleding stabiliteit binnenwaarts piping EN Assessment dike Overtopping revetment stabili
108. ingtoets Requirements and Functional Design 81 of 127 1207804 001 DSC 0002 16 May 2013 final 5 3 5 Ul Two UI packages contain the forms specific for items in the key data and assessment model classes The naming of these classes is lt item gt PropertyGontrol so the form where the user can enter swell data is called SwellPropertyControl For drawing items in the cross section editor there will be specific classes per item as far as needed called Drawing lt item gt For example the class DrawingRevetment draws the revetment zones in the cross section editor Other kind of Ul controls don t need a specific class because DeltaShellLight provides sufficient components already for tables charts and display of data in GIS 5 3 6 Ringtoets plugin The Ringtoets plugin has some control classes which configure and control Ringtoets This comprises the registration of property controls for certain item types the configuration how data should be displayed in GIS and the behaviour of the GIS and cross section editor These classes are mentioned in the description how these editors behave see sections 5 6 2 and 5 6 3 5 4 Project management 5 4 1 Start a new project At the start of a new project input of project settings is necessary like the project database name and location Ringtoets will come up with one Project Start Form that holds all those items together The form pops up directly after selecting Create new project
109. intenance Especially the technical design in chapter 5 serves this purpose For a description of the new VTV 2017 assessment procedure the reader is referred to the first framework description Lit 6 6 For a description of the requirements and the design of the probabilistic part the reader is referred to the Hydra Ring design document Lit 6 2 For the scientific background on the implemented methods and algorithms in the probabilistic part the reader is finally referred to Hydra Ring s scientific documentation Lit 6 1 Status and process Version 0 2 December 2011 contained already a second draft for the requirements chapters 1 to 3 and a first draft for the functional design chapter 4 This version has been discussed with the Advisory Group on March 30 2012 After that all received feedback from the principal and the advisory group has been discussed with the principal on April 10 2012 This discussion has resulted in agreement on the required modifications to the chapters 1 to 3 Lit 6 13 Version 1 0 June 2012 contained the amended final requirements together with a second draft of the functional design and a first draft of the technical design Version 1 0 served also as input for the first development period in September 2012 Version 1 1 contains an update of both the functional and technical design chapter 4 and 5 This update reflects the new insights gathered during the first three develooment stages up to and
110. ional Design 1207804 001 DSC 0002 16 May 2013 final Figure 5 26 Activity diagram for a level 2b assessment The following classes are involved in controlling HydraRing Ringtoets Requirements and Functional Design 109 of 127 1207804 001 DSC 0002 16 May 2013 final Figure 5 27 Class diagram for controlling HydraRing 5 8 4 3 Inspect level 2b results Output of level 2b assessment are failure probabilities and design points Ringtoets combines the FP of separate mechanism sections to FP for presentation sections and the total dike ring The user can inspect the FP per mechanism section in the Map Editor The Map Editor shows the FP on the dike line for each failure mechanism section with a color The FP value can be displayed in a mechanism section label With a pull down menu the user can switch between the results for different mechanisms In level 2b the pull down menu also has the item Presentation sections showing the FP per presentation section The results are also visualized in the dike line graph If Presentation sections is selected the Map Editor shows the total FP for the entire dike ring The total FP as a numerical value is shown in a label located at the center of the dike ring The color scheme is similar to the previous used FP legend colors 110 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final lf the user double clicks the dike line a property form opens
111. is one mechanism section The user can split one mechanism in two separate mechanism sections by adding a point on the dike line Merging of mechanism sections is possible as well Import of existing mechanism sections divisions will also be possible eventually in combination with manual adjustments For the revetment mechanisms branch Ringtoets will automatically propose a first distribution based on the location of different revetment zones For every mechanism section the user must select one characteristic cross section The properties of that cross section will be used as input for following level 2a assessments By default Ringtoets will automatically link the cross section that is most close to the middle of the centerline of the dike section Manual selection of another cross section is possible Execute level 2a assessment Level 2a assessment is a semi probabilistic assessment The assessment is per mechanism section If the assessment is positive the failure probability is below a certain maximum derived from the failure probability budget by using characteristic values for strength and loading in combination with partial safety factors The length of a single mechanism influences that failure budget length effect via partial safety factors Ringtoets Requirements and Functional Design 105 of 127 1207804 001 DSC 0002 16 May 2013 final Figure 5 25 Activity diagram for a level 2a assessment 106 of 127 Ringtoets Requiremen
112. ism section Cross section editor This section describes the functionality of the cross section editor in detail The purpose of the cross section editor is to provide a comprehensive view of data defined at a dike section The data will be visualized in the LZ plane Only data which can be visualized in this plane will be displayed for example sub soil data a surface line water level etc but not dike lines and computational settings The figure below schematically displays the cross section editor Ringtoets Requirements and Functional Design 95 of 127 1207804 001 DSC 0002 16 May 2013 final Figure 5 21 Modifying characteristic points along surface line in dike cross section editor The following items are displayed Selectable SchematizedSurfaceLine Points can be added moved and deleted _ s_isf Characteristic point By default a characteristic point is located 21 on the dike surface line Its position is editable by dragging a vertical cursor line which appears after selecting a characteristic point The line can be dragged to the left or right which leads to a repositioning of the characteristic point on the surface line The point snaps to dike points only default Characteristic lines determine the location of characteristic points on the surface line After a modification of a characteristic point the characteristic line will not be updated This means that updates to charactersitc lines are no
113. ithin the program and has to be closed before you can continue with the program should have Toolbars will be necessary Critical aspects are overview and scalable graphics must have The user must have the possibility to open dock hide unhide move and resize sub forms windows The latest window configuration must be stored and used at the next session must have Ringtoets Requirements and Functional Design 29 of 127 3 4 3 4 1 3 4 2 3 4 3 1207804 001 DSC 0002 16 May 2013 final FR 72 It must be possible to work with multiple screens e g by spreading the several sub windows over multiple screens must have FR 73 The usage of tabs is encouraged as a means to order large amount of parameters in forms graphs tables and also maps should have FR 74 Data can be partly imported from already available data sources for example the subsoil library When the user changes the imported data it should be made visible that the data has been changed e g by showing the data in a different background colour must have Non functional requirements Non functional requirements also called quality requirements describe the qualities of a program A non functional requirement NFR is a requirement that specifies the operation of a system rather than specific behaviour or functions Implementing the quality requirements will be detailed in the system architecture The quality requirements are described in the followi
114. l 2 The results will be visible if Assessment Level 1 is activated in the Ringtoets toolbar 104 of 127 Ringtoets Requirements and Functional Design 5 8 3 5 8 3 1 5 8 3 2 1207804 001 DSC 0002 16 May 2013 final The user can inspect the results in the Map editor A button Show results on the map editor toolbar displays the results on the dike line per cross section The possible statuses are O irrelevant for this mechanism 1 passing a level 1 assessment or 2 level 2 assessment is required The same information will also be available in the table presentation Ringtoets will also store the maximum allowed failure probability per level 1 approved mechanism and cross section unless this value is zero The user can inspect these values in a table presentation The maximum failure probability will be affected by the dike length associated to a cross section Assessment level 2a Additional schematization for level 2 assessment Level 2 is a detailed analysis using a semi probabilistic calculation 2a or a full probabilistic calculation 2b The difference with the previous assessment levels is that the level 2 assessments use mechanism sections instead of cross sections A mechanism section is a stretch of a flood defense with more or less homogeneous properties and boundary conditions for the considered mechanism A mechanism section is built from multiple adjacent cross sections Initially the entire dike line
115. l be at least columns with the mechanism section s name ld the assessment level 0 1 2 and level 2a results OK Not OK If the item Combined is selected the table shows the presentation section Id s and the level 2a results OK Not OK The FOS can be displayed per failure mechanism as well combined for mechanism sections In the Map Editor the user must select the FOS button The color of the mechanism sections and the legend will change to a FOS display Additionally the actual digital FOS value can be displayed in a mechanism section label The FOS value can be displayed in the table presentation Detailed assessment results for overtopping overflow will also be presented in the table presentation Assessment Level 2b Assessment Level 2b is full probabilistic check Initially the 2a mechanism sections that did not pass the semi probabilistic check are input for 2b Additional input probabilistic data is necessary but not mandatory The level 2b results can be displayed on user defined presentation sections Additional schematization for level 2b assessment By default the input for level 2b are the level 2a section that did not pass the semi probabilistic check Initially all mechanism sections that did not pass the semi probabilistic test are input for the full probabilistic assessment Additionally it will also be possible to manually select mechanism sections with the status level 1 OK or lev
116. les scenarios with a probability of occurrence for each possibility Define the schematized hydraulic head distribution in the characteristic cross section aquifers as a function of the external water level by input of an entrance point and a damping factor at the inner toe for each aquifer 20 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Determine the partial factors including the influence of section length Compute the failure probability with Hydra Ring using the prescribed mechanism models C2 Combine failure probability contributions from mechanisms and sections Calculate the allowed failure probability of the combination of probabilistically assessed parts after subtracting the failure probability budget for semi probabilistically assessed parts Import or define a division in presentation sections for the probabilistically assessed parts for combination of mechanism contributions Calculate the failure probability per presentation section and for all probabilistically assessed parts and view the resulting FP values for the different sections If the total FP is too large decide if the model schematization should be refined with the help of additional data If the total FP is still too large Give an indication of the presentation sections that need to be improved based on probabilistic assessment the sections with the largest contributions Optional
117. level is possible via the navigation window By default none of the cross sections are selected 12 Compared to PC Ring Ringtoets will not support the input of a stochastically defined surface geometry Ringtoets Requirements and Functional Design 45 of 127 1207804 001 DSC 0002 16 May 2013 final UC25 c After Toetsen Assess gt Start Start Ringtoets will calculate the water levels at the selected output locations and the selected cross sections with linked output locations Ringtoets will interpolate the calculated water levels along the dike line in order to find values for the other cross sections This enables a subsequent level 1 assessment at these cross sections without the need to compute the hydraulic boundaries for each cross section Start is only enabled if not all required results are available already UC25 d During the calculation a progress indicator will display the progress while warnings log messages and error messages will be written to the Meldingen Messages table UC25 e The calculation results are initially only stored in the Ringtoets memory Only after a user invoked Save command the calculation results are saved to the project database After the calculation has finished the following results will be available as chart tabs UC25 f The resulting graph along the dike reference line displays the distribution of the calculated characteristic water level toetspeil at the output locations river axis and a
118. ll import all available data in the selected source file s Ringtoets will check the used reference system of the data source and transform it to a default geographic reference system UC16 a and others will show how Ringtoets offers also import facilities via CSV files on a lower level by user selection of the corresponding CSV file from within one of the specific object lists input tables and property window forms Input or modification of key data This section describes optional modifications to the imported key data or manual input of the key data Basic functions are adding selecting moving or viewing objects Modifying includes showing of object properties editing or input of data adding or deleting objects selecting objects moving or copying objects For all uncertain input variables for strength models Ringtoets will allow input of a distribution type and distribution parameters such as a mean value and a standard deviation and present the design value The latter is used in a level 2a analysis and derived by using a partial safety factor Ringtoets Requirements and Functional Design 39 of 127 1207804 001 DSC 0002 16 May 2013 final UC 10 The dike line referentie lijn is the geometrical backbone of the schematization per cross section and mechanism The dike line is a line element consisting of multiple bending points Ringtoets will only allow for manual input or modification of one or more dike lines at the ini
119. lly requires only the geometrical properties to be known whereas a detailed assessment usually requires additional physical model parameters This deterministic method is also called semi probabilistic because prescribed partial safety factors implicitly ensure that the annual failure probability stays always below an allowed value per section and mechanism The new VTV 2017 regulations will also support this VTV 2011 type deterministic assessment per mechanism and section Part of the TOI project will therefore aim at the calibration of the safety factors for the final VTV 2017 mechanism models in 2017 Additionally the new VTV 2017 regulations and supporting software will allow an explicit probabilistic assessment taking into account the combined contributions from different failure modes and different sections The prescribed failure mechanism models for detailed probabilistic and semi probabilistic analysis will be identical The VTV 2017 will also prescribe how to combine the results from sections and mechanisms that were assessed with different methods Ringtoets Requirements and Functional Design 3 of 127 1207804 001 DSC 0002 16 May 2013 final VTV 2011 VTV 2017 0 relevance check per mechanism and section 1 Simple Assessment per mechanism and section LUSITJEAIOSUOD 2a Detailed semi probabilistic assessment per mechanism and section 2b Detailed probabilistic assessment for combinations of mechanisms and sectio
120. ls which stretches per mechanism require a more detailed level 2 assessment A level 2a or 2b assessment is executed at the level of longitudinal sections dike sections containing one or more cross sections The definition of the section division per mechanism within the relevant stretches should be performed with the help of a the result from the preceding cross section analysis and b an analysis of the spatial variability of the boundary conditions and the additionally required model data per mechanism Level O Level 1 Level 2a Level 2b Al Define flood defence B1 Add model input system for level 2 assessment dike location line subsoil data cross sections revetment properties characteristic points hydraulic structures polder heads etc Data import input A2 Compute Hydraulic B2 Division of flood Boundary conditions defence system into water levels overtopping dike sections per wave parameters mechanism A3 Perform relevance B3 Perform semi C1 Perform check Level 0 probabilistic probabilistic assessment Level 2a assessment Level 2b A4 Perform geometry B4 Combine semi C2 Combine based assessment probabilistic results for probabilistic results for Level 1 mechanisms and mechanisms and sections sections Safety assessment Assessment on cross section Assessment on dike section Figure 2 2 Schematic tasks for safety assessment as far as supported by Ringtoets Ringtoe
121. lure mechanisms for example stability and piping The soil profile is either 1D or 2D In a 2D profile the boundary between two layers can vary along the horizontal cross section axis perpendicular to the dike line The subsoil profiles will either be stored at mechanism sections or at regions A choise between the two options must still be made The soil profiles are mechanism dependend For piping a 1D profile is required for other mechanisms a 2D profile is needed Technically 1D and 2D profiles are stored separately For visualization routines are designed for 2D profiles Conversion routines translate 1D profiles to 2D profiles when profiles are visualised The presentation of 1D and 2D profiles will be different 68 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Figure 5 5 Data Classes for subsoil key data The classes have the following meaning SoilProfile The sub soil library contains a large number of 1D or 2D soil profiles The locations of the imported profiles will be visible in the map meter as a symbol and a name ID label Ringtoets will automatically link each dike cross section to the nearest soil profile A tiny dotted line can make this link visible in the map meter It is possible to change the links manually In the cross section editor the sub soil data will be visible as soil layers under the dike By default the dike material is equal to the top layer
122. ly export the probabilistic schematization and results See from UC 38 page 53 to UC 44 for details on step C Final remarks concerning section divisions and output per assessment water level 1 2 3 In case of a semi probabilistic level 2a analysis the FOS is the basic output per sub mechanism per layer and per section In case of a semi probabilistic analysis a FOS check OK or not OK is the basic output for combined mechanisms and sections In case of a semi probabilistic analysis the FP budget values per mechanism and section are also required as output for combination with probabilistically assessed parts In case of probabilistic analysis the model input is assumed to be equal as for detailed semi probabilistic analysis In case of probabilistic analysis Hydra Ring will be capable to calculate the combined FP on presentation sections taking into account the contributions from parts of different mechanism sections For the purpose of combining probabilistic and semi probabilistic parts the possible locations of presentation section cuts should be limited to the locations of mechanism section cuts Or in other words a presentation section consists of one or more combination sections Ringtoets Requirements and Functional Design 21 of 127 1207804 001 DSC 0002 16 May 2013 final 3 Requirements 3 1 3 2 Introduction The following sections present an overview of the general functional and non f
123. manse den Heijer Visschedijk 2010 Belastingmodel TOI HKV rapport 1951 10 Lit 6 4 Visschedijk 2010 Definitiestudie Hydra Ring rekenhart voor proefperiode Deltares report 1202575 004 Lit 6 5 F den Heijer 2010 december Toets en ontwerpinstrumentarium Aanpak activiteiten 2010 discussieverslagen en programma van eisen en wensen Deltares report 1202575 001 ZWS 0006 Lit 6 6 Jongejan 2011 june Het raamwerk en de aanpak van het toetsproces voorstel Deltares report 1202575 001 Lit 6 7 Dirksen F 2011 june Project Start Architektuur TOI draft RWS report v0 3 Lit 6 8 Van der Wouden F Grashoff P S 2009 PC Ring 5 3 0 Gebruikershandleiding Demis rapport W152 2009 04 Lit 6 9 projectbureau VNK 2009 Van ruwe data tot overstromingsrisico versie 2 01 Handleiding ter bepaling van het overstromingsrisico Ringtoets Requirements and Functional Design 111 of 127 1207804 001 DSC 0002 16 May 2013 final Lit 6 10 Duits M 2010 Hydra Zoet Gebruikershandleiding Versie 1 0 Lit 6 11 F Den Heijer H Knoeff F Hamer 2012 Masterplan WTI 2017 Deltares report 120489 000 ZWS 0013 Lit 6 12 H Knoeff 2012 Uitgangspunten voor het WTI Deltares report1206004 002 GEO 0001 Lit 6 13 M Visschedijk 2012 Ringtoets Requirements and Functional Design v0 2 Verwerking van het commentaar vanuit RWS en vanuit de adviseursgroep Deltares memo 1206004 002 GEO 0006 Lit 6 14 Data Protocol D
124. mbination with selecting the task filter for the appropriate mechanism will limit the required input and options for all mechanisms to the required assessment level UC 29 For the purpose of a level 1 or level 2 uplift heave piping assessment different schematizations are possible depending on the available data UC29 a Selecting the Toetsen Assess gt Piping Dijken Piping Dikes command from the menu bar will show the relevant tables and options for Piping For a selected cross section Ringtoets will display the selected surface UC16 a in the cross section window together with the connected sub soil profile s UC 17 the polder level and the inland piezometric head If the number of connected soil profiles is larger than 1 then a probability of occurrence for each scenario must be available UC29 b The initial location of the piping entrance point in the cross section follows from a characteristic line UC 11 and can be modified by the user If no characteristic line is available then Ringtoets will assume that the entrance point is located in the outer toe 48 of 127 Ringtoets Requirements and Functional Design 4 10 1207804 001 DSC 0002 16 May 2013 final UC29 c If no subsoil data is available then Ringtoets will use as a conservative assumption that the exit point is located at the inner toe and that uplift and heave will occur UC29 d If subsoil data is available for the considered cross section then Ringtoets
125. med that a cross section passing the level 1 assement does not consume any failure probability budget Ringtoets Requirements and Functional Design 17 of 127 1207804 001 DSC 0002 16 May 2013 final B Semi probabilistic assessment Create sections and perform semi probabilistic check level 2a Characteristic values of hydraulic boundary conditions per level 2 section FOS factor of safety value per level 2 section per sub mechanism and per layer Check if FOS is sufficiently large per level 2 section per sub mechanism and per layer If not a probabilistic analysis is required level 2b FOS Check Mechanism 1 O OK O FOS Check Mechanism 2 Semi probabilistic output for combination sections e Check where FOS is sufficiently large for all combined mechanisms Combined Fos Check C Jof lala o Figure 2 4 Semi probabilistic assessment per mechanism section B1 Add model input for level 2 assessment for selected stretches e For revetments Import of input for each revetment zone the physical properties to be used inside mechanism models a mean value b statistical standard deviation c standard deviation e For heave piping import or input a material library with different soil types and physical properties if available This library contains for each property mean value statistical standard deviation standard deviation for mechanism model s import or input a set of possible 1D soil profiles a
126. menten met gelijke faalkansen Overloop Overflow Faalmechanisme dat optreedt wanneer het water niveau hoger is dan de dijkkruin Overschrijdingsduurlijn N Q D Q F Q De gemiddelde duur van een periode waarin Q een bepaalde waarde overschrijdt Overslag Overtopping Faalmechanisme dat optreedt als golven over de dijkkruin slaan Piezometric head Stijghoogte Stijghoogte grondwater in een bepaald punt of van een bepaalde laag Het mechanisme dat leidt tot stabiliteitsverlies door interne erosie Presentatievakken Presentation De onderverdeling van de dijk in sections presentatievakken voor combinatie van de faalkansbijdragen van verschillende mechanismen niveau 2b Een presentatievak bestaat uit een of meer combinatievakken Probabilistische Probabilistic Een berekening van de faalkans gebaseerd op analyse analysis stochastische verdelingen van variabelen voor belasting en sterkte Project database Project database De database met daarin de projectgegevens van het geopende project Rekenschema Loop sequence Refereert naar de volgorde van rekenlussen bijv over de windrichtingen en over de faalmechnismen in de programma code Relevantie toets Relevance check Relevantie toets voor een bepaald mechanisme langs een dijkring niveau 0 B 4 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Semi probabilistische Semi probabilistic Een deterministische toets niveau 1 e
127. meters section of the form will give the possibility to set whether the influence of foreland or breakwaters should be included as well as the influence of different hydraulic parameters Ringtoets will calculate the wave parameters from the design point of a dedicated revetment strength limit state function similar to the Hydra software see also FR 39c UC26 b Cross section selection for calculation of the wave parameters is possible via the navigation window By default none of the cross sections are selected UC26 c After Toetsen Assess gt Start Start Ringtoets will calculate the wave parameters for different water levels at cross sections with linked output locations Ringtoets will interpolate the calculated wave parameters along the dike line in order to find values for the other cross sections This enables a 46 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final subsequent level 1 assessment at these cross sections for different failure mechanisms without the need to compute the wave parameters for each cross section Selecting Start will only be possible if not all required results are available already UC26 d During the calculation a progress indicator will display the progress while warnings log messages and error messages will be written to the Meldingen Messages table UC26 e The calculation results are initially only stored in the Ringtoets memory Only after a user invoked
128. n Dike line De hartlijn van het dijklichaam meestel gelegen in het midden van de dijkkruin Dijkoppervlak Surface line De opperviakteliin van een dijk in een dwarsdoorsnede inclusief het relevante deel van het waterbed en het achterland Dijkpunt Dike point Punt op dijklijn die het begin einde van een dijkvak markeert Dijkring Dike ring Een dijkring is gedefinieerd als ondoorbroken lijn van waterkeringen dijken duinen stuwen of hoge gronden die een bepaald gebied beschermt Dijkvak Dike section Een deel van de dijk in as richting met min of meer homogene eigenschappen en belasting Doorsnede Cross section Een dwarsdoorsnede van de dijk Drop down menu Drop down menu Een keuze menu met vooraf gedefinieerd aantal mogelijkheden directional sampling Eenvoudige toetsing Simple Assessment Een eenvoudige toetsing level 1 met faalmechanismodellen waarvoor doorgaans geometrische informatie volstaat Faalkans Failure probability Op systeem niveau is dit de jaarlijks kans dat FP een waterkering faalt dus dat water het beschermde gebied binnengaat Hydra Ring gebruikt een combinatie van technieken om de faalkansbijdragen van verschillende faalmechanismen en dijksecties te combineren Faalkansen budget FP budget De toedeling van de toelaatbare faalkans over verschillende mechanismen en vakken voor een semi probabilistische toets Faalmechanisme Failure Mechanism Een proces dat kan leiden tot het falen van de waterkerende f
129. n niveau toets assessment 2a met conservatieve karakteristieke waarden voor belasting en sterkte variabelen in combinatie met parti le veiligheidsfactoren De veiligheidsfactoren zijn zo gekozen dat de faalkans altijd beneden een toelaatbare waarde blijft Strijklengte Fetch area De strijklengte per windrichting voor het ontwikkelen van windgolven voor het Bretschneider model Systeemarchitectuur System architecture Het fysieke ontwerp van een systeem Tabblad Tab Via tabbladen kan tussen verschillende dialogen worden gewisseld Toets Assessment Refereert naar de toetsing van waterkeringen om te bepalen of ze voldoen aan de wettelijk vastgelegde normen voor de jaarlijkse faalkans Toetspeil Assessment water De karakterististieke waterstand met een level jaarlijkse overschrijdingskans gelijk aan de toelaatbare Vak Section Zie dijkvak Veiligheidsfactor Factor of Safety De veiligheidsfactor is de verhouding tussen de toelaatbare en actuele belasting voor een zeker faalmechanisme Waterkering systeem Flood defence Waterkering dijk duin vaste en bewegende system constructies Werklijn Frequentielijn Discharge F Q Het gemiddeld aantal keren dat een Exceedance afvoer een bepaalde waarde overschrijdt in n frequency curve winterperiode Voorland Foreland Gebied buitendijks van de dijk vanaf de teen tot aan het hydraulische randvoorwaarde punt met ongestoorde hydraulische condities XML XML Zelfbeschrijvend data f
130. nd end point of the line must be projected on the dike line A polygon is another data type Its boundary can cross the dike line twice The dike line between these two intersections location points lies inside the polygon e Soil data are imported in soil segments being areas polygons with a set of 1D or 2D soil profiles Each profile has a probability of occurance e Every location point on the dike line has a XYZ coordinate in the global coordinate system and dike line coordinate L coordinate e The connecting algorithms use spatial imaging technique to optimize the search algorithm e After the data has been projected on the dike line it can be projected on the cross sections including the dike surface lines 74 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final e In Ringtoets importing editing and manually adding key data is possible All of these actions can affect the data and the associated data links To guarantee that the most recent and actual data is used for calculations and visualization the linking routines must be called only when it is necessary This is the case if any object data has been added deleted or moved and at the same time a a dike cross sections is open ed or b a calculation routine is called The following tables is a list of key data the linking routine and the associated object class Data item shape type Linking routine Start Background p
131. ng sections Standards and requirements Rijkswaterstaat NFR 1 According to CNS 1 the Project Start Architecture document Lit 6 7 will define to which extend Ringtoets has to comply with the following general requirements for Rijkswaterstaat software e Usage of open standards http www open standaarden nl open standaarden lijsten met open standaarden e Requirements for web interfaces http rijkshuisstijl communicatieplein nl e Algemene Richtlijnen Applicaties versie 1 0 e overheidsarchitecturen NORA en MARIJ http www e overheid nl onderwerpen e overheid architectuur nora familie nora http www wikixl nl wiki ictu index php Inleiding Additional conventions and standards NFR2 The regular conventions standards tools and libraries for Deltares Systems software will be used must have NFR 3 Data definitions will follow existing and emerging standards such as IRIS as much as possible must have Operational and accessibility requirements The applicability of these general requirements for Ringtoets is limited 30 of 127 Ringtoets Requirements and Functional Design 3 4 4 3 4 5 3 4 6 1207804 001 DSC 0002 16 May 2013 final NFR 4 The installation program for Ringtoets must allow installation of an application with relevant hydrodynamic databases on individual MS Windows PC s or on Citrix servers According to Rijkswaterstaat the preferred installation will be on Citrix servers offering access
132. ns Figure 1 4 VIV 2017 assessment scheme with additional new level 2b Level 3 advanced is not shown Also not shown is the additional assessment based on criteria defined by the regional water authority beheerdersoordeel The result of a semi probabilistic assessment is usually a certain factor of safety FOS per mechanism and section A FOS is determined by the ratio between the allowed and actual value of certain load type e g an overtopping discharge a differential head for piping or a driving moment for slope instability The result of a probabilistic analysis is an integrated failure probability for a part of a dike ring which has to be compared with the allowed value The failure probability is influenced by the uncertainty in both hydraulic loading and strength as well as by the length and number of the sections A probabilistic analysis for combined mechanisms and sections is always less conservative than a separate semi probabilistic assessment per mechanism and section 4 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final 1 4 3 Global Assessment Work flow Figure 1 5 depicts the global assessment work flow which is to be supported by Ringtoets Flood Defences Geometry dependent schematization key data e Location and dimensions of the flood defence system water atithonritiac Calculation of Hydraulic Boundary Conditions per cross section or per output location Hydro
133. nts into the Delta Shell Light library Business Layer Key data model Contains all data and methods for the imported or inputted key data Note that this package doesn t depend on any other package Assessment model Contains all schematized data and results related to assessments on either cross section level or mechanism section level This package will use HydraRing as one of its components Failure Library of all failure mechanism models mechanisms UI Layer Assessment UI User interface components for the data in assessment model Key and boundary User interface components for the key data in soil model conditions UI Delta Shell Light Library with General facilities to build a user interface IO Layer Import and Export Facilities to import and export project data to certain file formats including the internal database format Ringtoets Requirements and Functional Design 59 of 127 5 2 1 1207804 001 DSC 0002 16 May 2013 final Figure 5 3 Software Packages Modular User Interface design with the Delta Shell Light library The Ringtoets Ul an IO layers will be based on the Delta Shell Light library of software components with a standardized look and feel Delta Shell Light is a C framework developed by Deltares and already used in different applications DAM D SoilModel Koswat D GeoStability The main philosophy behind the design of the Delta Shell Light components is that a user should be able to star
134. o XML facilitates also connection to external software such as a potential dedicated report module for a presentation assessment schematization and results e Export of latest changes to XML files changes made since last Save to project database See also Import of Key data section 4 5 e Export of input and or output tables to CSV files facilitates coupling to spreadsheet software e Export to SHP files facilitates update of key data in the waterboard GIS database as well as storage of final assessment results e Tentative Export the deterministic schematizations per cross section to stand alone tools such as Steentoets D GeoStability PC Overslag etc This facilitates examination of output details with the stand alone tools as well as usage of the schematizations for further analysis and design Strip results from database and close the project UC 47 When choosing File gt Clear results Ringtoets will remove the results from the database after a final user confirmation This is to be sure that storage of new and old results in one database is prevented UC 48 Intermediate saving of input is already described in UC 8 The user will finally invoke a Close form directly or indirectly before Ringtoets will actually exit e When choosing File gt Close without intermediate save the user can choose to a save and accept the changes b go back to project database after last save and discard changes Both actions require a final
135. odels to be supported probabilistically for respectively the evaluation version and the product version This includes also the requirements and limitations with regard to the use of mechanism sections And it finally includes the specification of the Hydra Ring interface CNS 6 Besides level 2b Ringtoets needs to support also the decision rules in level 1 and a semi probabilistic assessment in level 2a as well as the combination of probabilistically assessed parts with semi probabilistically assessed parts Ringtoets is not expected to support decisions with regard to the relevance check level 0 Ringtoets is also not expected to support a level 3 assessment Toetsen op maat and additional assessment procedures such as Beheerdersoordeel CNS 7 The first product version of Ringtoets is planned in 2016 before the start of the next assessment period in 2017 The aim of this product version is to supply full support for assessment with prescribed VIV 2017 models and procedures for at least 9 failure mechanisms including simple or detailed deterministic assessment with the help of Hydra Ring The general constraints for Rijkwaterstaat software such as huisstijl and web based design are not applicable for Ringtoets Ringtoets Requirements and Functional Design 7 of 127 1207804 001 DSC 0002 16 May 2013 final CNS 8 The applicability of Ringtoets will be limited to safety assessment for all Dutch primary flood defences category a b an
136. of object there may be a different way of presentation For example a dike ring might contain a table of dike sections a soil might have a long list with properties and a Q h relation might display a small diagram List and chart Contains several tables and charts All data which can be section presented in a table can be displayed here Also charts can be displayed with or without connection with a table Messages section Gives the user feedback about the data he has entered This can be information about the validity of data or suggestions about which task to perform For example a message is displayed if a value exceeds the maximum allowed value The suggested resolution is to assign the maximum allowed value which will be performed on user request The user will be able to start a calculation if all error messages have been resolved Output section The output section is to be used for display of log messages generated by a calculation The contents are purely informative for the user Figure 5 4 displays an example of a user interface based on Delta Shell Light This example shows that a map display a cross section display a property window a table section and a feedback section are used Ringtoets Requirements and Functional Design 61 of 127 1207804 001 DSC 0002 16 May 2013 final fa File Edit View Tools Cekuletion Windows Help 7 pe a gt h m De A tt v Scen_i7 Mesure n gard Hydra Code
137. oint The user can add or remove a dike point Ringtoets automatically redraws the mechanisms sections Revetment zones 4 5 and subsoil scenario s for piping and slope stability are expected to be defined already as key data along the dike line A toolbar button Use Revetment Division is enabled if the mechanism Revetment is selected in combination with a level 2 assessment When clicking this button the existing division points are removed and the revetment zone boundaries are imported as new division points Manually adjustment is possible thereafter The same procedure applies for using the subsoil scenarios division button Use Subsoil division to determe a first division of mechanism sections for piping and slope Stability lf the length of a mechanism section becomes smaller than the minimum value Ringtoets will give an error The first proposed repair action is to remove the end point of that small section and as a result merge it with the next mechanism section lf the end point is the end point of the dike line than the begin point of the small section is removed During a level 2a assessment Ringtoets will create Combination sections for level 2a assessment from the user input of mechanism sections The division points of the mechanisms sections are projected on one dike line Ringtoets uses combination sections to indicate the stretches for which all different level1 or level2a assessments pass the associated a
138. oject database The primary output of the computation is a FOS factor of safety or another mechanism dependent safety indicator for all available mechanism sections The following results will be available after the assessment calculation is completed UC36 f The map window will show the FOS in all calculated sections for the selected mechanism The user can change the selected mechanism 52 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final UC36 g Tables or graphs of the FOS for one or more selected mechanisms along the dike line will be given also Ringtoets will display the combined results of different mechanisms on so called combination sections after selection of the combination from the mechanism list UC36 h The map window will give an overview of the combination sections where the FOS is sufficiently large for a level 2a assessment UC36 i A list tab of the combination sections will give the same results Mechanism specific detailed output per mechanism section will be available also as far as required for tracing back the reliability of the computed FOS The specific output is mechanism dependent UC36 j An example for piping is a graph along the dike line of the minimally required piping length versus the actual piping length UC36 k Another example for uplift neave piping is a graph of the actual characteristic water level toetspeil versus the allowed external head 4 13
139. ormaat geschikt voor J uitwisseling via files of via web services Ringtoets Requirements and Design B 5
140. oss section are available the map view will also show indicate at which cross section the crest height of the cross section is sufficient UC31 h The available results are also presented in a chart tab The table displays in the columns the cross section ID name the ring coordinate and the required assessment level 0 1 2 per different stability mechanism The table will also indicate in a number columns if the crest height of the cross section is sufficient with regard to different values of the overtopping criterion 4 11 Additional schematization for level 2 assessment The result of the level 1 assessment is per mechanism a dike line divided in stretches where the mechanism is irrelevant 0 where simple assessment is sufficient 1 or where a detailed assessment level 2 is required The stretches marked with 2 are input for the detailed level 2 assessment as described in this section Input of additional soil and revetment properties for a detailed level 2 analysis will be analogous to UC 14 and UC 17 UC 32 Selecting the assessment task Level 2a in combination with selection of the appropriate mechanism will limit the required input and options for the selected mechanism to the required assessment level 50 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final UC 33 Specify user defined parameters to calculate a piezometric distribution in the aquifer for the purpose of a piping assessm
141. ow overtopping assessment The databases of most regions in 2006 and 2011 however do not yet supply these wave parameters Therefore Ringtoets has to support temporary the import and or input of fetch area strijkvak parameters for selected output locations for the wave generation model according to Bretschneider UC22 a Selecting an output location will give access to the Strijkvakken Fetch areas tab in the Properties window In this window the user defines a bodem ligging bottom location and a strijklengte fetch length for ditferent wind directions The number of shown wind directions is therefore 12 or 16 depending on the hydraulic load region in which the connected output point is located UC22 b Ringtoets displays the inputted fetch areas for all wind directions and output locations in the map window Ringtoets Requirements and Functional Design 43 of 127 1207804 001 DSC 0002 16 May 2013 final UC 23 View or input other Hydraulic Load parameters and settings UC23 a Selecting the command Toetsen Assess gt Instellingen Settings will give access to a nstellingen Settings tab in the Properties window to view the enegie non editable Hydraulic Load settings a Mica ba Mia heid rae E ee je aman Te TEN Om o PETN 30 m ojom m 1 EE mEt ESE Bretschneider voor Hs Sl ala EN Bretschneider voor Ts ool ere ald al waterstand gr afwijking gottichting o nor 00 o 20 vak o fijar os ee A Ik melk fe
142. r dike slope 5 8 Assessments 5 8 1 5 8 1 1 Assessment Level 0 Some failure mechanisms are irrelevant for a certain stretch at a certain location In Assessment level 0 the user can exclude these failure mechanisms for further assessments Execute Level 0 assessment Starting point for level 0 assessment is imported dike key data as described in 5 3 1 In the map editor the user can view that data such as the dike line with the Ringtoets Requirements and Functional Design 101 of 127 1207804 001 DSC 0002 16 May 2013 final characteristic lines and the cross section points With the basic GIS functions and controls in the map editor the user can open the dike cross sections in the cross section editor The expert can then view and inspect the dike geometry in the cross section editor The level 0 assessment must be performed for each failure mechanism The user can switch between failure mechanisms by the drop down box failure mechanisms located on top of the map editor The expert assesses the relevance of a failure mechanism based on dike geometry dike location and expert judgment When a failure mechanism is assessed as not relevant the dike section will be marked as a level O assessment section The cross sections will get a different marking in the map editor The map legend must link that specific mark with the status Level 0 The failure probability of a Level O section will be assumed to be zero The remainin
143. r mechanism sections the latter by entering a ring coordinate for the start and end point For a decision on the required division the user can use the previously calculated indication of the required assessment level per cross section as well as an analysis of the spatial variability of boundary conditions physical Ringtoets Requirements and Functional Design 51 of 127 1207804 001 DSC 0002 16 May 2013 final properties and geometrical properties During this process a user can deviate from the cross section indication when he or she feels that this is allowed under the specific circumstances UC34 d After the cross section group selection or generation of mechanism sections the user can modify the initial ring coordinate of each section boundary manually Ringtoets will give a warning if the mechanism section length becomes small compared to the mechanism length UC34 e When mechanism sections divisions are equal for two or more mechanisms a user must have the option to copy a mechanism section list for one mechanism to a mechanism section list for one or more other mechanisms UC34 f The user links each mechanism section to a schematized characteristic cross section either in the map window or in the mechanism section list tab This applies to overtopping overflow revetment see UC 24 as well as to heave piping see UC 29 UC 35 Inspect the default partial safety factors The View gt Defaults menu gives access to a tabbed form
144. r selected critical overtopping discharge default equal to 1 m 2 sec This chart is called hydraulisch belastingniveau UC27 g Along the dike reference line a table or graph of the actual crest level and the required crest levels the levels where a user defined critical overtopping discharge is equal to different user defined exceeding probabilities UC27 h Along the dike reference line the characteristic overtopping discharge with a specified exceeding frequency calculated at the actual crest level For all calculated values of height or discharge with different exceeding probabilities at different locations Ringtoets will offer also the associated design point value s as output This means the values of the stochastic variables optionally per wind direction Ringtoets will additionally give the associated wave parameters at the toe including the amount of reduction caused by breakwaters and or foreland Schematization for level 1 assessment of height and stability This section describes the definition or modification of the additional data required for a level 1 assessment of the different stability mechanisms per cross section A level 1 assessment uses geometry based decision rules to decide if a more detailed assessment is required or not Modifying includes showing of object properties editing or input of data adding or deleting objects selecting objects moving or copying objects UC 28 Selecting the task filter Leve 7 in co
145. r user requirement that the user interface is fully web based meaning access via a web browser without Citrix client software CNS 13 Ringtoets must be capable to import a snapshot of all key data from the original data sources maintained by the regional water authorities using the same exchange formats and methods as DAM Dike strength Analysis Module already does The reason for this constraint is that that the water authorities obviously want to maintain only one single data source for both DAM and Ringtoets CNS 14 The models and algorithms supported by Ringtoets are not expected to be exactly equal to the models and algorithms supported by PC Ring and the Hydra s Therefore the numerical results are also not expected to be exactly equal However the trends and ratio of results are expected to be comparable CNS 15 Ringtoets will not offer capabilities for direct import of PC Ring or Hydra input as the input data model of Ringtoets will be different Instead it is assumed here that re use of existing PC Ring data from the VNK project during the test and evaluation period will be achieved via preprocessing Automation of this preprocessing will however be not a part of the Ringtoets development CNS 16 Rijkswaterstaat allows the use of third party software as part of Ringtoets as long as this software does not require a separate user licence fee and as long the The structure of the workflow supported by Ringtoets will be different f
146. rder to limit the visible UC options and data to this task UC UC 17 Toetsen Dijken Overslag Hydraulische belasting Waterpeilen in uitvoerlocaties Hydraulische belasting Waterpeilen in doorsneden 4 Hydraulische belasting Overslag debiet Hydraulische belasting Overslag kruinhoogte Hydraulische belasting Golfparameters Toetsen Dijken Overslag Toetsen Dijken Bekleding Toetsen Dijken Macrostabiliteit binnenwaarts Toetsen Dijken Piping Toetsen Constructies Overslag Toetsen Constructies Piping Toetsen Constructies Stabiliteit Toetsen Constructies Sterkte constructie Toetsen Constructies Sluiten Toetsen Dijkerosie Toetsen Combinatie Hydraulische There are five tasks related to hydraulic load belasting Hydraulic load Ringtoets Requirements and Functional Design 65 of 127 Waterpeilen in uitvoerlocaties water level at output locations Waterpeilen in doorsneden Water level at cross sections Overslag debiet Overtopping Overtopping discharge Overtopping kruinhoogte Overtopping crest level e Golfparameters Wave parameters Toetsen Assessment Dijken Overslag Dike Overtopping Dijken Bekleding Dike Revetment Dijken Macrostabiliteit binnenwaarts Dike macro Stability inner slope Dijken Piping Dike Piping Constructies Overslag Structures Overtopping Construc
147. re available then Ringtoets will assume that the location of the exit point is at the UC33 f If there is an uplift location found and if the heave criterion at that location is also exceeded then Ringtoets will perform a simple piping check UC 34 Define mechanism sections and link to a characteristic cross section The dike line and the location of the cross sections is the same for all mechanism schematizations However the dike section division and the cross section configuration can be different for each failure mechanism A dike section is defined by the ring coordinate of the begin and end of the section implicitly encapsulating a group of one or more adjacent cross sections UC34 a The user select from the menu bar Schematize gt Mechanism Sections The map window and list tab shows the required assessment level indicators per cross section for the via the data filter selected mechanism 0 1 or 2 The screen shows also the imported section divisions when available UC34 b When a user wants to define a separate mechanism section for each cross section implying that the mechanism section division is equal for all mechanisms then Ringtoets must give the possibility to generate such a division via the action form UC34 c If there is no mechanism section per cross section generated the user can select and mark groups of adjacent cross sections as level 1 and level 2 sections either graphically in the map window or in a list tab fo
148. rements access rights disk space etc copies the program modules and selected hydraulic databases adds a start up icon in Windows start menu etc The program will ask the user to place a Shortcut on the Desktop Yes and No button At the end of the 36 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final UC 2 installation the program pops up a message box with a message of a successtul installation and asks whether the administrator directly want to open Ringtoets or not Configure GIS connector s The basic Ringtoets installation will have a default configured GIS connector The GIS connector is necessary for the import of key data A mapping table relates the objects in different GIS files to the data objects required by Ringtoets The system administrator can make configure a custom mapping table for different GIS databases with key data The system administrator can create a new mapping table for a custom GIS connector in the installation directory of Ringtoets or by installing an already pre configured file for example for standardized IRIS data The default installed GlS connector will link to standardized IRIS data 4 3 Getting started UC 3 When starting Ringtoets for the first time Ringtoets will open with an example input equal to the example described in the tutorial part of the Users manual The main structure of the menu bar of Ringtoets will show the following
149. rform level 2b assessment In the menu bar the user chooses Assess gt Level 2b A Level 2b form will open UC42 a After clicking the Select button the form offers the possibility to select one or more available mechanisms and to select one or more available mechanism sections for either level 2a or level 2b assessment The selected mechanisms are marked with a check symbol V UC42 b After clicking the Settings button the user can change the default settings for various calculation options including the probabilistic method including start method and the calculation scheme Additionally the user can overrule the default settings per mechanisms section when desired UC42 c After clicking the Calculate Mechanisms button Ringtoets will calculate the separate failure probabilities contributions and the associated design points per mechanism section for all selected mechanisms and mechanism sections based on input for the detailed mechanism models UC42 d After clicking the Combine Mechanisms button Ringtoets will calculate the combined failure probability and design point for all each of the selected presentation sections using all available contributions from selected mechanisms and mechanism sections UC42 e During calculation Ringtoets will present progress and log information via a progress window Ringtoets will also write the log information to a log file which can be inspected at any time via the Show Log button from the Level 2b
150. robabilistic and full probabilistic calculations and combination of the assessment results 4 Presentation of assessment results Figure 2 1 shows the global Ringtoets design The main functions are steered by a controller connecting to a graphical User Interface UI an input output IO layer and a business layer e The user interface enables tabular or graphical presentation and manipulation of the project data the model schematization and the calculation results e The input output layer connects to the internal project database and to different types of external databases and files The external data sources are shown at the left hand side A GIS and a subsoil database D Soilmodel are expected to be used increasingly by the waterboards as the original source for processed key data Data exchange with Ringtoets is expected to be performed through CSV or SHP files The CSV format allows also for connection to external spreadsheet software The additional XML format is expected to be used mostly for archiving and exchanging project data as well as for connection to external software such as a formal VT V 2017 report module Map data is expected to be imported through shp files e The business layer performs the tasks for assessment on all relevant levels and contains also the definition of the shared data model The business layer connects to the Hydra Ring component for the probabilistic assessment level 2b Ringtoets connects
151. rom the formal VI V 2017 structure to report the final assessment results 8 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final hw availability is guaranteed for a minimum period of 10 years This constraint does not apply to existing external software that has to be used in conjunction with Ringtoets 1 7 Summary of relevant concepts and procedures 1 7 1 Some important concepts and terms for understanding the functional requirements are explained globally hereafter A full glossary of terms is presented in appendix A and B For more detail on the mentioned concepts models and procedures the reader is referred to the scientific documentation Lit 6 1 Failure mechanisms A flood defence system consists of sections of dikes and or dunes with interjacent structures A flood defence system can fail meaning lose its water retaining function due to different failure mechanisms An overview of relevant mechanisms for dikes is shown in Figure 1 6 Overflow Overtopping Slope stability inwards Slope stability outwards Seepage face erosion Piping internal erosion Liquefaction Revetment failure Figure 1 6 Illustration of different failure mechanisms for dikes sometimes actual failure will depend on the occurrence of more than one submechanism An example is failure due to piping internal erosion of sand underneath the dike or structure which can only occur after prece
152. rs can be reordered with the following limitations e The WMS layer is the bottom layer always e A polygon layer is always behind a point or line layer Display fetch area Show fetch areas per cross section Each fetch area points towards a wind direction 5 6 2 2 Linking Output Points to Cross Sections Cross sections are points on the dike line that contain dike geometry and soil data Additional data from the Hydrodynamic Database is also required in the dike profile Hydrodynamic data is located in geographic output points A link between a cross section and a hydrodynamic output point is necessary Because there are typically many cross sections and automated linking routine is necessary UC 20 lt will be assumed here that hydraulic structures are also linked to a representive cross section plane With the Link button on the form the user can start the automated linking routine Ringtoets will pop up a warning message that says that any existing link will be removed After a final confirmation Ringtoets will start the automated linking routine Ringtoets will look for a nearby output point for every single cross section point For every point Ringtoets looks for the closest output point within an inner threshold distance If there is one or more points within the threshold distance only the closest point is linked to that cross section If none output point is found the search area is enlarged to a larger outer threshold
153. rt is displayed right or below of the table depending on the available space The user can switch off one of them if he wishes The following data are available in the tables By default the number of columns equals the number of item properties Hiding of columns of for example intermediate results is possible Dike sections Dike sections for the selected The L coordinate failure mechanism In case no dike indicates the offset division has been set up yet each along the dike line dike line is assumed to be a dike section Group per dike line The table includes the failure probability for the dike section All division points for the current No chart Ringtoets Requirements and Functional Design 99 of 127 95 7 1207804 001 DSC 0002 16 May 2013 final Lai Fiala line Contains all failure probabilities Bar chart with En valid for the whole dike linel failure probability Charaterisic Displayes meaning of line and Bem lines allows focusing in map and property editor a a ameen 1D soilbase model En a 2D soilbase model S ee profiles in the soilbase model model All swell data All fetch data Water level All water level setup data No chart setups All breakwater data All structure data Validation Validation is run automatically after each change in the input data It runs in a separate thread so it won t block the application After validation finishes a list of messages is displayed These
154. shp Buiten tenen D Program Files Delktares Ringtoetsidataset piping DR10_buitenteen shp Binnen kruinen D Program Files Deltares Ringtoets dataset piping DR 10_binnenkruin shp Buiten kruinen D Program Files Deltares Ringtoets dataset piping DR 10_buitenkruin shp m Grondprofielen D Program Files Deltares Fingtoets dataset piping Piping DAM invoer soilprofiles csyv al Hoogte dwarsprofielen D Program Files Deltares Ringtoets dataset piping Piping DAM invoer surfacelines csv E Karakteristieke punten grondsoorten D Program Files DelktaresiRingtoetsidataset piping Piping DAM inwaer soilmaterials mdb m Dijkbekledingen m Intreepunt piping m Dwarsprofielen D Program Files Deltares Ringtoets dataset piping DR10_cross_sections shp in Stijghoogte bovenste zandlaag D Program Files Deltares Ringtoetsdataset pipingDR10_ hydraulische _gegevens shp m Stijghoogte diepe zandlaag D Program Files Deltares Ringtoets dataset piping DR 10_ hydraulische _gegevens shp Openen Opslaan Opslaan als Importeren 38 of 127 Ringtoets Requirements and Functional Design 4 6 1207804 001 DSC 0002 16 May 2013 final The shp files are a snap shot of the databases maintained with GIS by the water boards The subsoil csv files are a snapshot from a MDB database maintained with the DSoilModel software According to the more detailed use cases in section 4 6 Ringtoets can import the following key data from one or more X
155. sion in 2016 must support all final mechanism models hydraulic load models and assessment procedures as prescribed by the VTV 2017 and the defining documents to which the VTV 2017 refers as far as these models are part of the VTV 2017 software library for failure mechanisms See Table 3 1 for a tentative list must have The initial evaluation version of Ringtoets at the start of the evaluation period must already offer capabilities for probabilistic production of hydraulic boundary conditions water level and wave parameters as well as a probabilistic assessment for a selected number of mechanisms Table 3 1 in combination with the TMR2006 hydraulic data set must have Multiple users should be able to work simultaneously collect data schematize and calculate on different mechanisms and or on different parts of one dike ring area It is not required that the supported models and algorithms are equal to PC Ring and the Hydra s see CNS 14 22 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final This requires ideally a locking mechanism to restrict the input access for selected mechanisms and sections to a certain user should have GR 7 The user must be able to supply model input either by importing data or by adding data via the graphical user interface GUI must have GR8 Semi automated schematization from processed key project data to model data will be supported where possible
156. soil materials in the object list window and edit properties in both the object list window and the properties window UC17 b A user can add delete and edit the different segments along the dike in the Object list window The 1D or 2D soil profiles connected to a certain segment are visualised in the Cross section window UC17 c A user can define or change the soil profile geometry in the properties window The soil profile geometry must comply with the constraints posed by the piping model to be used a cluster of cover layers combined with one aquifer layer The horizontal 2D cross section coordinate is defined relative to the dike location line LZ coordinates instead of RD coordinates The required soil properties for a level 1 heave piping assessment are only the cover layer thicknesses and densities The required additional soil type properties for a level 2 heave piping assessment may include the dimensions and physical properties of one or two aquifers Multi user edit Ringtoets will have multi user functionality This means that multiple users can work simultaneously on one project by using storage of project data in a central project database with multiple user access UC18 a lf a certain user has made nonsaved changes to certain key data or schematization data this data will automatically be locked for editing by others The lock will automatically be released after a save to the database The locking of data is necessary to preven
157. ssessment criteria of the different mechanisms For level 2b the user can define presentation sections for the output The begin and end point of a presentation section must coincide with the division points of the combination sections In a way presentation sections are groups of combination sections The location of the begin and end points of presentation sections can therefore not be edited since they must coincide with the begin and end points of mechanisms sections Initially the presentation sections are a copy of the combination sections The user can edit them by removing division points As said before adding division points is only possible at begin and end points of combinations sections 92 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Figure 5 18 Activity diagram for map based editing Ringtoets Requirements and Functional Design 93 of 127 1207804 001 DSC 0002 16 May 2013 final Figure 5 19 Activity diagram for changing the dike location line 5 6 2 5 Linking characteristic cross section to mechanism section Level 2 uses mechanism sections instead of cross sections Mechanism sections are stretches of a flood defense with more or less homogeneous properties and boundary conditions for a considered failure mechanism A mechanism section contains one or more adjacent cross sections A mandatory prerequisite is that one cross section is indicated as the characteristic cross
158. stack of different soil layers including a link for each layer to the soil library For one or more characteristic lines along the flood defence river axis outer toe levee axis inner toe ditch axis polder side attach one or more probable soil profiles to certain stretches along the line and define the probability of occurrence along the stretch Or use imported soil profile distributions along the characteristic lines e Optionally export previously inputted or modified data B2 Per mechanism divide into sections for level 2 analysis e import existing section divisions from previous assessment when available to support the decision process e Overflow wave overtopping decide for a modified division into sections based on the difference between crest height and characteristic water level e Revetment decide for a modified division into sections based on the location and types of revetment layers e Heave Piping decide for a modified division into sections based on the variation in subsoil conditions in geometrical properties and in hydraulic loading 18 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final e Optionally export previously inputted or modified section divisions B3 Optional Perform semi probabilistic analysis level 2a e Revetment Define the partial safety factors to be used for physical properties and hydraulic loading Per section Define t
159. surface line for the selected cross section Ringtoets will display in the cross section window the selected cross section surface UC16 a with characteristic points and revetment zone locations UC16 c UC24 a The automated schematization proposal by Ringtoets is already invoked for all applicable cross sections when a user selects the Joets Assess gt Taak Task gt Hydraulische belasting Hydraulic load option A cross section is applicable for automated schematization if no schematized overtopping surface is available yet Ringtoets uses characteristic points and revetment boundaries for this automated schematization The user views the results of this proposal in the table UC24 b The user views the schematized profile also in the cross section window UC24 c The user views the repair actions in the messages window for the selected cross section when automatized schematization is not possible A repair action is required when the constraints to the geometry for foreland and dike are not met e The schematized profile must comply with the overflow overtopping model constraints for a deterministic geometry definition according to the Hydra software see section 5 7 e Ringtoets will check if the schematized surface contains a foreland by using the characteristic points defining the foreland start and end Ringtoets will check if the schematization of the foreland complies to the foreland model constraints e g slopes steeper than 1 to
160. t data inconsistency When setting focus to an already locked object the user will be warned that modification is not possible Another nonpreferred method for working simultaneously is to work on local databases UC 46 UC18 b Ringtoets will automatically lock blocks of data both key data and schematized data when a user starts assessment calculations that need to use this data 42 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final 4 7 Schematization for hydraulic boundary conditions including overtopping UC 19 Activity and Data Filtering for hydraulic boundary conditions UC19 a Selecting Toetsen Assess gt Taak lask gt Hydraulische belastingen Hydraulic load or using the equivalent activity filter option optionally followed by selecting Toon Data gt Schematisatie Show Data gt Schematization will limit the visible data and options to those required available for schematization of Hydraulic boundary conditions UC19 b Ringtoets will show in the messages window and or the tentative workflow window which schematization actions the user needs to perform before a run can start UC 20 Linking cross sections to output locations UC20 a Selecting Beeld View gt Tabellen Tables gt Dwarsdoorsneden Cross sections will activate the object list with cross sections After selecting the Auto verbind uitvoer locaties Auto link output locations option for one or more cross sections
161. t saved In the map the imported characterstic line is displayed When selecting a characteristic point the user can select Disconnect option in the context menu right mouse button Disconnect is a point property With this option it is possible to drag the 96 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final UC characteristic point to a position free from the surface line see Figure 5 22 Of course the validation rules for the schematized dike line still apply 5 7 Those functions are only enabled for Overtopping and Stability Piping entry and exit point Piping entry and exit point Piezometric head Revetment Selectable A revetment zone has a start and end point in the cross section editor in horizontal direction Figure 5 21 The user can select add edit and remove revetment zones Overlapping zones are not allowed gaps between zones are Selectable Water level setup Selectable Figure 5 22 Disconnect characteristic point from dike surface line 5 6 4 Property window Several items in Ringtoets can be selected either on the map in the cross section editor in a table or via the main menu When selected their properties are displayed in a property editor Sometimes several property editors are available for the same item In that case they are displayed in different tabs in a tab control Property forms are not linked to a Configuration Databas
162. t the toe of all cross sections if available as well as the value of the water level with an exceeding probability which is ten times higher The names of different cross sections are added to the x axis of the graph at certain distances UC25 g For a selected cross section or output location Ringtoets will also present a table or graph of the water level including the characteristic water level as a function of exceeding frequency Location selection will be possible via the map or from a list Output should also include the value of the difference between the characteristic water level toetspeil and the water level at a ten times higher exceeding frequency decimeringshoogte For all water levels with different exceeding probabilities at different locations RIngtoets will offer also the associated reliability index and design point value s as output Each design point is defined by the values of the stochastic variables in the design point optionally per wind direction UC 26 Ringtoets can calculate and or display the wave parameters for a revetment assessment at the toe for different water levels along the slope and for different wind directions UC26 a ln the menu bar the user selects Toetsen Assess gt Taak Assessment gt Hydraulische Belasting Hydraulic Boundary Conditions With Toetsen Assess gt Instellingen Settings the Rekeninstellingen Calculation settings tab opens in the properties window The Golfparameters Wave para
163. t with execution of his tasks without a steep learning curve To accomplish this the Ul based on Delta Shell Light has the following features e Across section editor and a map editor are placed centrally in the application e Besides the map and cross section editor there are a couple of windows Each window has its own way of presenting data For example there is a table section which displays data in tabular form The same data can be presented on the map and or a cross section The following windows are available in Delta Shell Light 60 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Map window Displays geographical located data The map editor supports layers which can be switched on and off on user request The map editor is accompanied by a legend which explains colours and symbols Navigation window Displays a list with the most important objects to navigate to quickly and or to select for specific actions Often a list of locations is displayed here Cross section Displays a cross section of the vertically arranged data in two window dimensions for example a sub soil cross section The cross section editor supports layers and has a legend Displays a print preview of a report A report can be printed or exported to a file format of choice Property window Displays properties of a certain object for example the selected object on the map or in a table Depending on the type
164. ther formats should have Create a new copy of the report when specifying a new name must have lf parameters are reported with quantiles the quantiles should be accompanied with the corresponding parameter value nice to have Show results of individual failure mechanisms in their design points illustratie punten Show contribution of single failure mechanism to the overall failure probability including length effects must have Export input and results FR 58 FR 59 Export input and calculation settings via the GIS connector as much as possible see FR 39 Hydra Ring will not write directly into the central water board databases must have Export the output of different calculation types via the different connectors for GIS spreadsheets and text see FR 39 must have 28 of 127 Ringtoets Requirements and Functional Design 3 3 9 1207804 001 DSC 0002 16 May 2013 final FR 60 FR 61 Export all input calculation settings and results via the neutral XML connector should have Link meta data to exported data program version date data description etc must have Design rules for the Graphical User Interface This section presents first rules and constraints that will be adopted during the actual design of the graphical user interface These rules are based on opinions from expert users of existing assessment tools and or GIS tools such as PC Ring Hydra s D GeoStability MStab PC
165. tial stage before any other input or import of key data has taken place After selecting Beeld View gt Tabellen Tables gt Referentielijnen Dike lines from the menu bar the user is able to define or modify the points defining the dike line via the property window UC 11 The characteristic lines karakteristieke lijnen along the dike line define the horizontal location of characteristic points in different cross sections Examples of such help lines include from water side to land side e start voorland start foreland e Intredepunt piping entrance point piping e buiten teen outer toe e start buitenberm nr i start outer berm nr i e einde buitenberm nr end outer berm nr e buiten kruin outer crest e binnen kruin inner crest e binnen teen inner toe e start sloot start ditch e einde sloot end ditch etc The object list with characteristic lines and property window are displayed via the Beeld View gt Tabellen Tables gt Karakteristieke lijnen Characteristic lines command from the menu bar UC 12 Relevant structures kunstwerken are defined either as a point as a line or as an area depending on the type of structure The object list with structures and the property window are displayed via the Beeld View gt _ Tabellen Tables gt Kunstwerken Structures command from the menu bar In the map window different types of objects are marked differently e g circle
166. ties Piping Structures Piping Constructies Stabiliteit Structures Stabilit 66 of 127 1207804 001 DSC 0002 16 May 2013 final Calculate water level data per output location Calculate water level data per cross section Calculate overtopping discharge per cross section given a required frequency and existing crest height Calculate required crest height per cross section given the maximum allowed discharge for a given frequency Calculate results per overtopping dike section for a level 2a or 2b analysis Assess the cross section surface for overtopping and revetment Schematize for revetment stone asphalt or grass and calculate results per cross section for a level 1 analysis or per macro stability dike section for a level 2a or 2b analysis Schematize for macro stability and calculate results per cross section for a level 1 analysis or per dike section for a level 2a or 2b analysis Schematize and calculate piping results per cross section for a level 1 analysis or per piping dike section for a level 2a or 2b analysis Schematize for overtopping of structures and calculate results per structure Calculate results per structure for a level 2b analysis Schematize and calculate piping results per structure for a level 1 or 2a analysis schematize for structures and calculate results per structure for a level 1 2a or 2b analysis Ringtoets Requirements and Functional Design revetment
167. to software libraries containing components that are shared with other tools including the stand alone VTV tools and DAM Dijksterkte Analyse Module Sharing libraries between these tools will enable uniform connections to single data sources a uniform look and feel and equivalent results from the shared mechanism models Using shared libraries will also reduce the maintenance effort for each of these tools Import and export to NetCDF is currently not foreseen as a user requirement 12 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final D e L ta re S e Characteristic water levels waves e Assessment reciilts Subsoil database CSV e Profiles and parameters xml CSV iles for exchange or archiving e selection from nroiect data Input for relevant stand alone tools xml e Schematizations for level 2a l e Input schematizations e Output characteristic water levels waves e Output failure probabilities l interface Hydra Ring level 2b e Statistical distributions for the stochastic Libraries which are part of different VTV tools Mente Ringtoets software En ieee Ringtoets project database rarer kee eae _Hydra Ring software e Water level and waves as a function of CC Hydra Rina databases stochastic variables Figure 2 1 Global design of Ringtoets Ringtoets Requirements and Functional Design 13 of 127 1207804 001
168. ts Requirements and Functional Design 15 of 127 1207804 001 DSC 0002 16 May 2013 final 2 3 2 Detailed Workflow Details on the workflow that needs to be supported are presented below in bullet style The purpose of this description is mainly to help in deriving and understanding the related requirements The workflow description will be restricted to three typical mechanisms overflow wave overtopping revetment heave piping Extension of the description to additional mechanisms is however quite straightforward A Definition of cross section geometry and determination of the required assessment level per cross section with the help of relevance checks level 0 and geometry based checks level 1 Determine the required assessment level per mechanism and per cross section e Characteristic values of hydraulic boundary conditions per cross section e Check if mechanism is irrelevant level 0 if level 1 is sufficient or if level 2 is required Mechanism 1 O OOOO OGOGO W Mechanism 2 SSOOOOOD OOG GG Mechanism 3 ooo Figure 2 3 Determination of required assessment level per mechanism and cross section A1 Define Flood defence system e Input or import the actual dike location line of the flood defence system e Input or import processed cross section surface lines from Digital Terrain Model in GIS e Optional import existing definitions of characteristic point verticals along the dike line such as
169. ts and Functional Design 5 8 3 3 5 8 4 5 8 4 1 1207804 001 DSC 0002 16 May 2013 final Inspect level 2a results The result of a 2a assessment is a check on the Factor of Safety FOS The results show whether the FOS is sufficiently large enough OK or not Not OK The user will also have the possibility to inspect the actual calculated FOS The results will be shown in the Map Editor where mechanism sections are indicated with a green color OK or orange color Not OK The user can inspect the results per mechanism pull down menu in Ringtoets toolbar The mechanism sections with a green color are either stretches marked as level 0 level 1 or level 2a OK The level 2a Not Ok stretches will have the orange color Those sections are input for the 2b assessment In the Combined mode combined for all mechanisms the map editor shows the results projected on combination sections Ringtoets creates the combination sections by projecting the begin and end points of all mechanism sections of all mechanisms on the dike Figure 2 5 The Combined mode can be activated by a button on the Ringtoets toolbar This mode is additional to the failure mechanisms e g Overtopping Revetment Piping Combined The table below the bottom of the Map Editor shows the results per mechanism section or per presentation section If a mechanism is activated in the pull down menu there wil
170. ty inward piping o NL Toetsen constructies Overslag piping stabiliteit sterkte constructie niet sluiten UK Assessment structures Overtopping piping stability structure Structure failure Nonclosing of structures o NL Toetsing duinen UK Assessment Dune erosion o NL Toetsen combinatie UK Assessment Combination Assessment level For assessment levels for tasks NOT for Hydraulic load o NL Toetsniveau Releventie 0 Eenvoudig 1 Gedetailleerd 2a Probabilistisch 2b UK Assessment level Relevance 0 Simple 1 Detailed 2a Probabilistic 2b Kaart Map window for topview presentation of the location of objects for focus selection of one or more objects using selectable layers for viewing object groups Standard GIS functions like zooming and panning are available as well Other GIS functions such as 34 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final graphically defining or modifying locations of points lines and objects will not be supported except for the graphical definition of the locations of mechanism sections e Eigenschappen Properties tabs o for editing all properties of a focused object o for editing settings for the project and for specific models and methods e Lists and Charts section o Object lists with Key data and Schematization data The different tabs containing key data and schematization data are object lists allo
171. unctie Bijvoorbeeld overloop golfoverslag helling instabiliteit piping bekleding falen duin erosie etc Faalmechanisme Failure Mechanism Het eenvoudige of gedetailleerde model dat model model wordt gebruikt om het faalmechanisme te beschrijven FOS Zie veiligheidsfactor Ferry Borges en Castanheta model voor het modelleren van tijdelijke processen binnen een faalkansberekening zoals PC Ring dat ook doet Probabilistische methode Eerste orde betrouwbaarheidsberekeningen bepaalt het ontwerppunt en de bijbehorende faalkans gebruikmakend van iteratieve linearisatie van de faalkansfunctie B 2 of 127 Ringtoets Requirements and Functional Design 1207804 001 DSC 0002 16 May 2013 final Gedetailleerde toets Detailed Gedetailleerde toets semi probabilistisch assessement niveau 2a of probabilistisch niveau 2b In beide gevallen wordt gebruik gemaakt van een faalmechanismemodel dat gedetailleerde invoer nodig heeft Getijperiode Tidal period Een periode van getijde periode relevant voor het modelleren van de vorm van een willekeurige afvoergolf GIS GIS Geografisch Informatiesysteem GIS kaart GIS map Een GIS kaart waarin de gebruiker kan navigeren en objecten bekijken GIS kaartlaag GIS layer Kaartlagen in een GIS kaart met verschillende thema s Hydraulic Load Hydraulische De hydraulische belasting op een dijklichaam belasting Hydraulische Hydrodynamic De hydraulische belasting zoals vastgelegd in r
172. unctional requirements The functional requirements also include some rules and constraints for the design of the graphical user interface One of the following importance indicators is attached to each of these requirements e Must have minimally required for basic usage e Should have additionally required for practical usage e Nice to have additionally desired to support practical usage General requirements General requirements focus on the main functionalities of Ringtoets The general requirements are system qualities that the Ringtoets program must have to support the assessment methodology of dikes Ringtoets should meet for this purpose the following general functional requirements GR GR 1 GR2 GR 3 GR 4 GR 5 GR 6 Ringtoets must comply with general requirements and preferences for the TOI project as much as practically possible These preferences are derived from Lit 6 5 must have The first product version in 2016 needs to support a probabilistic and semi probabilistic assessment for multiple mechanisms and sections The probabilistic analysis tasks will be executed by Hydra Ring must have The features of Hydra Ring and supporting tools must include the output features of the existing Hydra software and supporting tools as well as all calculation and output features of the existing PC Ring software as far as required for an assessment according to the VTV 2017 must have The first product ver
173. ured mapping table Importeren Import Import archived project data in XML format UC 41 UC 44 Exporteren Export Archive project data in XML format UC 41 UC _ _ _ en Project Close Ringtoets Exit Bewerken Edit Description Ongedaan Undo and Redo recent actions maken Opnieuw Undo Redo i cs E B Ringtoets Requirements and Functional Design 63 of 127 1207804 001 DSC 0002 16 May 2013 final Beeld View UC Herstel Restore Restore the visibility of tabs to the initial settings Map Kaart Set focus to the map window Dwarsdoorsnede Cross Section Set focus to the cross section window Navigator Navigator Set focus to the navigator window Meldingen Messages Set focus to the Messages table Log uitvoer Log output Set focus to the Log output table e Resultaten Results Show only Results Tabellen Tabels Set focus to a selected table with input or results e Referentie lijnen Dike Input data for the dike reference line s UC Reference Lines e Karakteristieke lijnen Input data for the characteristic lines Characteristic lines defining start foreland toe outer berm entrance point piping outer toe outer crest Inner crest inner toe toe inner berm start ditch etc e Kunstwerken Structures Input data for structures like gates concrete defence walls and other water works e Dammen en Caissons Input data for breakwaters like caissons Breakwaters rubble mounds and vertical walls
174. user confirmation When choosing File gt Exit Ringtoets will first switch to the Close form if unsaved changes exist This feature will only be available for the new generation of stand alone tools based on the Delta Shell Light library 56 of 127 Ringtoets Requirements and Functional Design 5 1 5 2 1207804 001 DSC 0002 16 May 2013 final Technical Design Introduction This chapter describes the technical design of Ringtoets based on the functional design as described in the previous chapter The intended reader for this chapter is the programmer of Ringtoets The two purposes of this chapter are 1 to define the required structure prior to the actual development 2 to serve as system documentation for future maintenance As already explained in section 1 3 this chapter will be further improved and detailed during the development periods System architecture The global Ringtoets design has been depicted already in Figure 2 1 This design corresponds to the generic design of a new generation of dike strength software applications Ringtoets stand alone VTV tools and DAM as presented in Figure 51 Each application in the collection of new generation software consists of the following four layers 1 The control layer contains the data model and steers the execution of different tasks in the three other layers 2 The User Interface UI layer enables presentation and manipulation of input data and results 3 T
175. ut output or both need to be exported This functionality is of use if project data is exchanged with users outside the organization UC 1 Exporting and importing the latest changes is useful when working offline or parallel to a project The latest changes are all data changes since the last Save of data to the central project database When working offline a user first makes a complete copy of the online project database and starts working on it in an offline environment When he is finished he exports the latest changes to the original online project database When working parallel a user makes a complete copy of the online project database and at the same time exports the latest unsaved changes He then opens the copy of the project database and imports the latest changes He now can work parallel offline to the original project He can modify and change the model until he is satisfied with the calculation results To use the changes het exports the latest changes from his offline copy and imports the changes to the online project database The project manager must manage the data and file exchange to be sure that for example data is imported from the correct external user with the correct adjustments Ringtoets can not see if a data file is the correct version or an older one e Export of input to an editable XML file enables archiving of input as well as exchange of input data between different users e Export of input and results t
176. will use a procedure similar to the DAM software to check if uplift and heave can occur assuming that a damping factor of zero and an infinite leakage length In this conservative case the required minimum factor of safety for uplift is 1 Ringtoets will use a minimally required FoS and the weight and thickness of the cover layers to check if uplift can occur Lit 6 14 Lit 6 15 If the answer is true Ringtoets will also determine the location of the exit point en check if heave at that location can occur UC29 e Ringtoets will graphically display in the cross section window the resulting distribution of pore pressures and cover layer weight from the inner toe to the polder side together with an indication of the exit point the first location where the FoS for both uplift and heave are smaller than the minimally values UC 30 Export import project data for a levell assessment For the purpose of data exchange the user can export the project data for a level 1 assessment via the File gt Export command Another user can import this data via the File gt Import commana in order to create an exact project database copy Execute level 1 assessment for height and stability When the input for level 1 is completed and when the hydraulic boundary conditions and overtopping results are calculated per cross section the user can start the level 1 assessment procedure on cross section level UC 31 Perform a level 1 assessment task A3 A4 U
177. wing the selection adding removing of objects or the editing of certain object properties o Charts with Results The different tabs with Results are charts containing a tabular and graphical presentation of input and results per cross section or along the dikeline o The Meldingen Messages list contains warnings and errors with associated repair actions o The Log Uitvoer Log Output list contains the progress information and statistics as produced during an assessment run Data Filter Task Filter Assessment level lringtoets BETA a x Bestand Bewerken Beeld Toetsen hereedschap Help L 3 al i Kerndata j gi Toetsen Dijken Overslag Eenvoudig 1 r Navigator Dwarsdoorsnede Eigenschappen 0 2 9 55 DLO Pli Bm eer verse kruin binnen ki Properties section lacation_dijkring10_dwp18 location dijkringiO_dwpzz location_dijkringi0_dwp25 location _dijkring1O_dwpe lacation_dijkring10_dwp38 location diikrina10 dwo39 4 u Tabellen Tabellen Uitvoer Referentielijnen lt lt Lists and Charts section key data lists schematization data lists result charts messages log output EEn Li mm I 1 J I Li ul L Ent nn Ennn Enne Ennn nnn ann Meldingen Figure 4 1 Components of Ringtoets User Interface Ringtoets Requirements and Functional Design 35 of 127 4 2 1207804 001 DSC 0002 16 May 2013 final Furthermore the following concepts and rul

ringtoets-requirements-and

Contents

Download Pdf Manuals

Related Search

Related Contents