UMDLOTI/OHLANGA WASTEWATER REVIEW
Contents
1. Dialog 4 4 Stormwater Cost Surface Generation Functionality Generates the lengths of pipes required to drain the low point of each hexagon to the nearest discharge point of lower elevation This process should be run only when a new discharge point dataset has been developed Recalculates the Stormwater Cost Surface Dialog 4 4 1 Stormwater Drainage Infrastructure Accessed from Dialog 4 4 Stormwater Cost Surface Generation Buttona Stormwater Cost Surface Generation Stormwater Drainage Infrastructure Unit Costs Current Pipe Sizing 0 mmND a Pipe Unit Cost 0R M b Select 7 am ND e Select Alternate Pipe Diam Miscellaneous Inputs Pipe Length Calibration Factor 1 3 d p lt lt Generate Stormwater Discharge Lengths f Generate Stormwater Cost Surface o Close Details of the dialog s functionality are included in the table overleaf Cost Surface Model User Manual Volume The User Interface October 2008 56 Dialog 4 4 1 Stormwater Drainage Infrastructure Functionality The pipe size used to cost the stormwater pipe from the hexagon to the discharge point is displayed in this window Should it be required to change the pipe size refer to c below The unit cost per length of pipe of diameter as displayed in b is read from the water trunks cost table Allows the user to select an alternative pipe size and hence2. Clicking the button displays the pipework costing parameters for the selected pipework zone s Clicking the button displays the treatment costing parameters for the selected treatment system s Cost Surface Model User Manual Volume The User Interface October 2008 42 Dialog 4 1 Sewage Cost Surface Generation Functionality The treatment capacity available in the selected treatment system s is displayed in MI day and in a unit termed Equivalent Dwelling Units EDU s are calculated by dividing the capacity in Ml day by the average sewage generation per site per day refer f below and tells the user how many dwelling units the treatment system can support Similar to c above the available capacity or the capacity remaining for new projects is displayed in both Ml day and EDU s Should the available EDU s be zero then the application calculates the cost to supply treatment capacity The capital cost to construct capacity is entered The expected sewage generation per site per day is entered Using e and f above the cost to provide treatment capacity per site is calculated Having specified the user inputs and undertaken the tasks detailed in Section 5 1 the user can generate the treatment costs for the selected treatment system s Cost Surface Model User Manual Volume The User Interface October 2008 43
3. Clicking the button displays the storage costing parameters for the selected reservoir zone s Clicking the button displays the treatment costing parameters for the selected water works zones s The storage capacity available in the selected water works Cost Surface Model User Manual Volume The User Interface 49 October 2008 Dialog 4 2 Water Cost Surface Generation Functionality zone s is displayed in Ml day and in a unit termed Equivalent Dwelling Units EDU s are calculated by dividing the capacity in Ml day by the average water consumption per site per day refer u below and tells the user how many dwelling units the water works zone can support Similar to r above the available capacity or the capacity remaining for new projects is displayed in both Ml day and EDU s Should the available EDU s be zero then the application calculates the cost to supply treatment capacity The capital cost to construct treatent capacity is entered The expected water consumption per site per day is entered Using t and u above the cost to provide treatment capacity per site is calculated Having specified the user inputs and undertaken the tasks detailed in Section 5 2 the user can generate the treatment costs for the selected water works zone s Cost Surface Model User Manual Volume The User Interface October 2008
4. Cost Surface Model User Manual Volume The User Interface 5 October 2008 Dialog 1 2 Module Manager Accessed from Dialog 1 1 Point to Combined Costs Surface Data Button d Module Manager Sewage a Water b Roads e Stormwater g Electricity e Combined f Exit h This dialog remains open throughout the user s session in the Cost Surface Model and enables the user to navigate between the various modules of the model Clicking each button will open dialogs relevant to that module refer to Sections 2 3 amp 4 Details of the dialog s functionality are included in the table below Dialog 1 2 Module Manager Functionality If box y the do not show at start up check box on Dialog 3 1 Point to Sewage Cost Surface Data is unchecked then Dialog 3 1 is opened Otherwise Dialog 4 1 Sewage Cost Surface Generation is opened If box y on Dialog 3 2 Point to Water Cost Surface Data is unchecked then Dialog 3 2 is opened Otherwise Dialog 4 2 Cost Surface Model User Manual Volume The User Interface October 2008 6 Dialog 1 2 Module Manager Functionality Water Cost Surface Generation is opened If box y on Dialog 3 3 Point to Roads Cost Surface Data is unchecked then Dialog 3 3 is opened Otherwise Dialog 4 3 Roads Cost Surface Generation is opened If box y on Dialog 3 4 Point to Stormw
5. Water Supply Infrastructure i e Pipes Unit Costs Current Trunk Sizing l 200 mmND d Trunk Unit Cost 800 A m e Select Alternate Trunk Diam Select v Jmm ND f Miscellaneous Inputs Trunk Length Calibration Factor l 12 9 Next Steps Generate Supply Costs h Close Generate Storage Costs Generate Treatment Costs Details of the dialog s functionality are included in the table below Dialog 4 2 Water Cost Surface Generation Functionality Clicking the button displays the pipework costing parameters for the selected reservoir zone s Clicking the button displays the storage costing parameters for the selected reservoir zone s Clicking the button displays the treatment costing parameters for the selected water works zones s The pipe size used to cost the pipework in the reservoir zone is Cost Surface Model User Manual Volume The User Interface 45 October 2008 Dialog 4 2 Water Cost Surface Generation Functionality displayed in this window Should it be required to change the pipe size refer to f below The unit cost per length of pipe of diameter as displayed in d is read from the water trunks cost table refer to Dialog 3 2 Point to Water Cost Surface Data button h Allows the user to select an alternative pipe size and hence an alternative unit cost to be used in the cost calculations The length of pi
6. accessed via the Menu Point to Datasets then this button will read Close If the dialog has been accessed via the Module Manager then this button will read Next gt gt and Dialog 4 2 Water Cost Surface Generation will be opened when the button is clicked Cost Surface Model User Manual Volume The User Interface October 2008 21 Dialog 3 3 Point to Roads Cost Surface Data Accessed from Menu Point to Databases for Item Roads Dialog 1 2 Module Manager Button c Point to Roads Cost Surface Data Select Working View Cost Surface Roads Select Shapefiles Cost Surface COST SURFACE Traffic Zones TRAFFICZONES Features FEATURES Working Offsets WORKING OFFSETS Working Routes WORKING ROUTES Select Cost Table FREE F road costs dbf This dialog enables the user to specify the view and relevant shapefiles to be used in the roads bulk costs module Details of the dialog s functionality are included in the table below Cost Surface Model User Manual Volume The User Interface October 2008 22 Dialog 3 3 Point to Roads Cost Surface Data Functionality Click the search tool in order to bring up a list of all the views currently in the project Select the view in which the roads cost surface shapefiles are situated The selected view is then displayed in the text box alongside It is not envisaged
7. an alternative unit cost to be used in the cost calculations The length of pipe that is costed for each cost surface hexagon is the straight line distance between the lowest point of the hexagon under consideration and the closest discharge point of lower elevation Physical pipes are obviously longer than the straight line distance and this factor allows the user to ensure that the modelled pipes are lengthened to more accurately represent the physical situation Returns to previous dialog Cost Surface Model User Manual Volume The User Interface 57 October 2008 Dialog 4 4 2 Stormwater Infrastructure Condition Factor Accessed from Dialog 4 4 Stormwater Cost Surface Generation Button b Stormwater Cost Surface Generation Factor 1 Condition of Surrounding Infrastructure Increase Cost of Pipe by Factor when Condition of Surrounding Stormwater Infrastructure is Categorised as Factor Factor Category 1 1 00 Categor 5 1 40 Category 2 1 10 Category 6 1 50 Category 3 1 20 Category 7 1 60 Category 4 1 30 Uncategorised 1 00 Category 1 Newest through to Category 7 Oldest lt lt Generate Stormwater Discharge Lengths Generate Stormwater Cost Surface Close Details of the dialog s functionality are included in the table below Dialog 4 4 2 Stormwater Infrastructure Condition Factor Functionality general Modify factor
8. button g on the module manager A cost surface has been calculated for all modes of transport refer to theme ALL MODES COST SURFACE and public transport only refer to theme PUBLIC TRANSPORT ONLY COST SURFACE Details of the user interface are included below for completeness Dialog 3 6 Point to Transportation Cost Data Accessed from Menu Point to Databases for Item Commuter Costs Dialog 1 2 Module Manager Button g Point to Transportation Cost Data Select Working View Cost Surface Transportation a Point to Shapefiles Cost Surface COST SURFACE b Municipal Traffic Zones TRAFFICZONES c Generated Commuter Zones COMMUTER ZONES d Railway Stations RAIL STATIONS e Railway Station Buffers RAIL STATION BUFFERS f Working Routes WORKING ROUTES g Point to Tables Origin Destination Matris od matrix dbf h Commuter Zone Record traffic zone merge dbf j y Do not show at Startup This dialog enables the user to specify the view and relevant shapefiles to be used in the transportation costs module Cost Surface Model User Manual Volume The User Interface October 2008 33 Details of the dialog s functionality are included in the table below Dialog 3 6 Point to Transportation Surface Data Functionality Click the search tool in order to bring up a list of all the views currently in the project Select the view in which the tra
9. dataset Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the water reticulation buffers shapefile from the list The water reticulation buffers shapefile will definitely change from year to year in which case the user will need to point to the updated dataset Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the water reticulation shapefile from the list The water reticulation shapefile will definitely change from year to year The user will need to point to the updated dataset Click the search tool in order to bring up a list of all the tables currently in the project Select the water trunks costs table from the list The water trunks costs will definitely change from year to year in which case the user will need to point to the updated table If this check box is selected then this Dialog 3 2 cannot be accessed from Dialog 1 2 Module Manager It can only be accessed from the Menu Point to Datasets Cost Surface Model User Manual Volume The User Interface October 2008 20 Dialog 3 2 Point to Water Cost Surface Data Functionality This prevents the inconvenience of Dialog 3 2 opening whenever the user accesses Dialog 4 2 Water Cost Surface Generation from the Module Manager If this Dialog 3 2 has been
10. s functionality are included in the table below Cost Surface Model User Manual Volume The User Interface October 2008 14 Dialog 3 1 Point to Sewage Cost Surface Data Functionality Click the search tool in order to bring up a list of all the views currently in the project Select the view in which the sewage cost surface shapefiles are situated The selected view is then displayed in the text box alongside It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the sewage cost surface shapefile from the list It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the sewage treatment systems shapefile from the list Refer to Definition 4 1 a on page 38 for information on treatment systems The treatment systems shapefile will possibly change from year to year in which case the user will need to point to the updated dataset Cost Surface Model User Manual Volume The User Interface October 2008 15 Dialog 3 1 Point to Sewage Cost Surface Data Functionality Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a
11. shapefile from the list It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the tables currently in the project Select the roads costs table from the list The roads costs will definitely change from year to year in which case the user will need to point to the updated table If this check box is selected then this Dialog 3 3 cannot be accessed from Dialog 1 2 Module Manager It can only be accessed from the Menu Point to Datasets This prevents the inconvenience of Dialog 3 3 opening whenever the user accesses Dialog 4 3 Roads Cost Surface Generation from the Module Manager If this Dialog 3 3 has been accessed via the Menu Point to Datasets then this button will read Close Cost Surface Model User Manual Volume The User Interface October 2008 24 Dialog 3 3 Point to Roads Cost Surface Data Functionality If the dialog has been accessed via the Module Manager then this button will read Next gt gt and Dialog 4 3 Roads Cost Surface Generation will be opened when the button is clicked Cost Surface Model User Manual Volume The User Interface October 2008 25 Dialog 3 4 Point to Stormwater Cost Surface Data Accessed from Menu Point to Databases for Item Stormwater Dialog 1 2 Module Manager Button d Poi
12. that the user should have need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the roads cost surface shapefile from the list It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the traffic zones shapefile from the list The traffic zones will possibly change from year to year in which case the user will need to point to the updated dataset Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the features shapefile from the list The features shapefile will change from year to year in which case the user will need to point to the updated dataset Click the search tool in order to bring up a list of all the Cost Surface Model User Manual Volume The User Interface October 2008 23 Dialog 3 3 Point to Roads Cost Surface Data Functionality shapefiles currently in the view selected in a above Select the working offsets shapefile from the list It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the working routes
13. to construct very long pipes The application uses this number in conjunction with the number specified in j above to determine if it is more economical to build a new treatment works than to construct very long pipes Having specified the user inputs and undertaken the tasks detailed in Section 5 1 the user can generate the pipework costs for the selected pipework zone s Cost Surface Model User Manual Volume The User Interface October 2008 41 Clicking button b on the dialog will display the treatment parameters for the selected treatment system s Note the scripting will prompt the user to select a treatment system if none are selected rrr oes 9 Sewage Cost Surface Generation Specify A Pipework Parameters Sewage Treatment Parameters Selected System s Parameters Mi day EDUs Treatment Discharge Capacity Soo 50000 C Available Capacity 3 15000 d EDUs Equivalent Dwelling Units Provision of Treatment Capacity Cost Parameters Capital Cost of 1Ml day Treatment Capacity 3 00 F milion Avg Sewage Generation Site Day 200 litres f Calculated Average Capital Cost to provide 800 Treatment Capacity per Site 600R g Nest Steps Close Generate Pipework Costs Generate Treatment Costs h Details of the dialog s functionality are included in the table below Dialog 4 1 Sewage Cost Surface Generation Functionality
14. to the train station intra zone by bus taxi or walking The different proportions of commuters using different modes of intra zone transport in the selected commuter zone s are entered by the user Updates the selected commuter zone s with the latest data Generates transportation routes using the information entered to date Cost Surface Model User Manual Volume The User Interface October 2008 69 Clicking button c on the dialog above will display the modal costs for the selected commuter zone s Ze Transportation Cost Surface Specify b a Database SetUp Modal Splits Specify Costs per Transport Mode k Transport Mode private vehicle Update Selected Commuter Zone s m Next Steps n Close Generate Routes Generate Costs Details of the dialog s functionality are included in the table below Dialog 4 6 Transportation Cost Surface Generation Functionality Clicking the button displays the step processes for setting up datasets relevant to the transportation module Clicking the button displays the modal split information for the selected commuter zone s Clicking the button displays the modal costs information for the Cost Surface Model User Manual Volume The User Interface 70 October 2008 Dialog 4 6 Transportation Cost Surface Generation Functionality selecte
15. to the updated table If this check box is selected then this Dialog 3 6 cannot be accessed from Dialog 1 2 Module Manager It can only be accessed from the Menu Point to Datasets This prevents the inconvenience of Dialog 3 6 opening whenever the user accesses Dialog 4 6 Transportation Cost Surface Generation from the Module Manager If this Dialog 3 6 has been accessed via the Menu Point to Cost Surface Model User Manual Volume The User Interface 36 October 2008 Dialog 3 6 Point to Transportation Surface Data Functionality Datasets then this button will read Close If the dialog has been accessed via the Module Manager then this button will read Next gt gt and Dialog 4 6 Transportation Cost Surface Generation will be opened when the button is clicked Cost Surface Model User Manual Volume The User Interface October 2008 37 Section 4 Cost Surface Generation User Inputs User inputs dialogs are accessed via Dialog 1 2 Module Manager Dialog 4 1 Sewage Cost Surface Generation Accessed from Dialog 1 2 Module Manager Button a Sewage Cost Surface Generation Specify b a Pipework Parameters Treatment Parameters Working Area Next Steps Close Generate Pipework Costs Tonnie i j Generate Treatment Costs There are two categories of bulk costs considered for the s
16. 50 Dialog 4 3 Roads Cost Surface Generation Accessed from Dialog 1 2 Module Manager Button c z Specify Road Unit Costs Specify b a Routing Parameters Costing Parameters Working Area Next Steps Generate Routes and Costs Clicking button a on the dialog above will display the routing parameters used in the calculation of the cost surface Specify Road Unit Costs Specify a b Costing Parameters Specify Road Routing Parameters Calculation Parameters Offset Radius Mini Offset Factor Routing Reach Next Steps Close Generate Routes and Costs Details of the dialog s functionality are included in the table below Cost Surface Model User Manual Volume The User Interface October 2008 51 Dialog 4 3 Roads Cost Surface Generation Functionality Clicking the button displays the routing parameters used in the calculations Clicking the button displays the costing parameters used in the calculations These three parameters are used by the scripting in the calculation exercise It is not envisaged that the user should have need to modify them Cost Surface Model User Manual Volume The User Interface October 2008 52 Clicking button b on the dialog above will display the costing parameters used in the calculation of the cost surface Specify Road Unit Costs Specify a Routing P
17. Cost Surface Model User Manual Volume The User Interface October 2008 66 Clicking button a on the dialog above will display the tools necessary to process existing datasets ready for use in the transportation module O P IP gt Rl vO NN Transportation Cost Surface Specify a b c Modal Splits Modal Costs Build Working Database Generate Commuter Zones Initialise for Commuter Zone Formation Union Selected Traffic Zones to Form Commuter Zones Save Commuter Zone Edits to File Develop Commuter Zone Origin Destination Matrix Generate Railway Data Generate Railway Station Buffers Assign Railway Stations to Commuter Destinations Assign Railway Stations to Commuter Origins Next Steps Close Generate Routes Generate Costs Upon receiving new traffic zones or origin destination information new commuter zones should be created using the functionality on the panel Generate Commuter Zones Upon receiving railway station information the functionality on the panel Generate Railway Data should be stepped through Cost Surface Model User Manual Volume The User Interface 67 October 2008 Clicking button b on the dialog above will display the modal splits for the selected commuter zone s Transportation Cost Surface Specify a c Database SetUp Modal Costs Specify Commuter Modal Splits Indicate Modal S
18. Dialog 4 2 Water Cost Surface Generation Accessed from Dialog 1 2 Module Manager Button b Water Cost Surface Generation Specify Infrastructure for a b c Supply Storage Treatment Working Area Next Steps Generate Supply Costs Close Generate Storage Costs Generate Treatment Costs There are three categories of bulk costs considered for the water cost surface These are the costs of e the pipework required to convey water from a reservoir to a cost surface polygon that is being developed The pipework costs are calculated using parameters entered at a reservoir zone level constructing storage capacity in the form of reservoirs to provide an adequate level of service to a developed polygon The storage costs are calculated using parameters entered at a reservoir zone level and constructing treatment capacity at the relevant treatment works in order to accommodate the demand generated by the development of a polygon of the cost surface The treatment costs are calculated using parameters entered at a water works zones level Cost Surface Model User Manual Volume The User Interface October 2008 44 Clicking button a on the dialog above will display the pipework parameters for the selected reservoir zone s Note the scripting will prompt the user to select a reservoir zone if none are selected Water Cost Surface Generation Specify Infrastructure for a b c Storage Treatment
19. Notes Section 1 Section 2 Section 3 Section 4 Cost Surface Model CITY OF CAPE TOWN COST SURFACE MODEL USER MANUAL VOLUME I OF II THE USER INTERFACE Contents Getting Started Dialog 1 1 Point to Combined Costs Surface Data Dialog 1 2 Module Manager Cost Surface Results Viewing amp Querying Dialog 2 1 Combined Cost Surface Dialog 2 2 Cost Surface Query Tool Cost Surface Generation Set Up of Databases Menu 3 1 Point to Databases for Dialog 3 1 Point to Sewage Cost Surface Data Dialog 3 2 Point to Water Cost Surface Data Dialog 3 3 Point to Roads Cost Surface Data Dialog 3 4 Point to Stormwater Cost Surface Data Dialog 3 5 Point to Electricity Cost Surface Data Dialog 3 6 Point to Transportation Cost Data Cost Surface Generation User Inputs Dialog 4 1 Sewage Cost Surface Generation Dialog 4 2 Water Cost Surface Generation Dialog 4 3 Roads Cost Surface Generation Dialog 4 4 Stormwater Cost Surface Generation Dialog 4 5 Electricity Cost Surface Generation Dialog 4 6 Transport Cost Surface Generation User Manual Volume The User Interface October 2008 1 Notes each dialog is headed with it s name description in bold and a string of italics directly beneath the name e g Dialog 1 1 Point to Combined Costs Surface Data Accessed from Automatic At Start Up Menu Point to Databases for Item Combined Dialog 1 2 Module Manager Bu
20. The User Interface October 2008 9 Dialog 2 1 Combined Cost Surface Functionality Using the selections in a b and c above the model calculates and displays the combined cost surface It may be necessary for the user to manipulate the legend of the cost surface theme in order for the theme to display intelligibly Clicking this button opens Dialog 2 2 Cost Surface Query Tool refer below for functionality Cost Surface Model User Manual Volume The User Interface October 2008 10 Dialog 2 2 Cost Surface Query Tool Accessed from Dialog 2 1 Combined Cost Surface Button e amp Cost Surface Query Tool f x Select Cost Surface Polygon s for Query This dialog enables the user to select any number of polygons of the cost surface in order to display the bulks costs numbers that contribute towards the shaded legend Using tool a the user selects one polygon by clicking on the cost surface or a number of polygons by click hold drag rectangle release on the cost surface The dialog redisplays as shown below Cost Surface Model R Cost Surface Query Tool Element Sewage Pipework Sewage Treatment Capacity Water Trunks Water Reservoirs Water Treatment Works Roads Stormwater Drainage Electricity Transmission Lines Electricity Substations 4 Polygons Selected with an Average Cost per Site of A f x Select Cost Surface Polygon s for Query
21. above Select the sewage pipework zones shapefile from the list Refer to Definition 4 1 6 on page 38 for information on pipework zones The pipework zones shapefile will possibly change from year to year in which case the user will need to point to the updated dataset Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the sewage pipework buffers shapefile from the list The pipework buffers shapefile will definitely change from year to year in which case the user will need to point to the updated dataset Click the search tool in order to bring up a list of all the tables currently in the project Select the sewage pipework costs table from the list The pipework costs will definitely change from year to year in which case the user will need to point to the updated table If this check box is selected then this Dialog 3 1 cannot be accessed from Dialog 1 2 Module Manager It can only be accessed from the Menu Point to Datasets Cost Surface Model User Manual Volume The User Interface October 2008 16 Dialog 3 1 Point to Sewage Cost Surface Data Functionality This prevents the inconvenience of Dialog 3 1 opening whenever the user accesses Dialog 4 1 Sewage Cost Surface Generation from the Module Manager If this Dialog 3 1 has been accessed via the Menu Point to Datas
22. ace Generation Specify a b Treatment Parameters Sewage Pipework Parameters Unit Costs Current Pipe Sizing l 300 mm ND Sewer Pipe Unit Cost 1750 R m j 0 Select Alternate Pipe Size Select _ mmND Miscellaneous Inputs Pipe Length Calibration Factor l 1 2 h I Cap Pipework Costs By Building Treatment Works Minimum Size of New Works l TMi day J k R 3 00 million MI of Constructed Capacity Next Steps Close Generate Pipework Costs m N lt i Generate Treatment Costs Details of the dialog s functionality are included in the table below Dialog 4 1 Sewage Cost Surface Generation Functionality Clicking the button displays the pipework costing parameters for the selected pipework zone s Clicking the button displays the treatment costing parameters for the selected treatment system s The pipe size used to cost the pipework in the pipework zone is displayed in this window Should it be required to change the Cost Surface Model User Manual Volume The User Interface 39 October 2008 Dialog 4 1 Sewage Cost Surface Generation Functionality pipe size refer to f below The unit cost per length of pipe of diameter as displayed in c is read from the sewer pipes cost table refer to Dialog 3 1 Point to Sewage Cost Surface Data button f Should the pipework zone under consideration be a pumped zone
23. ameters used in the calculations Clicking the button displays the substation costing parameters Cost Surface Model User Manual Volume The User Interface October 2008 61 Dialog 4 5 Electricity Cost Surface Generation Functionality used in the calculations The user enters an unit cost per km of overhead transmission line The length of transmission line that is costed for each cost surface polygon is the straight line distance between the polygon under consideration and the closest point of the existing transmission line network This distance is measured using buffers generated around the transmission line network Physical lines are obviously longer than the straight line distance and this factor allows the user to ensure that the modelled lines are lengthened to more accurately represent the physical situation These numbers are used to generate what is known as the substation coverage Each substation s capacity is considered and the area in hectares which it can service is calculated A circle of this area is drawn centred on the substation This factor allows the reach of the substation coverage to be increased as their actual coverages are not circular in extent This factor makes the circles bigger thus designating more areas as having electricity Having specified the parameters the user clicks the button A new substation coverage is generated a
24. arameters Specify Road Costing Parameters Unit Costs Bus Route New 2 00 R million Z km Intersection 1 00 R million include if new road is less than 1 00 km in length Terrain Fact ae esa Avg Grade of Polygon Length Cost Factor g Flat 0 to 5 12 Roling 5 w 15 1s Mountainous greater than 15 20 Next Steps Close Generate Routes and Costs h Details of the dialog s functionality are included in the table below Dialog 4 3 Roads Cost Surface Generation Functionality Clicking the button displays the routing parameters used in the calculations Clicking the button displays the costing parameters used in the calculations The user is to enter the unit cost of constructing a bus route type surfaced road from the cost surface polygon under consideration to tie in to the existing road network The user is to enter the cost of constructing a new intersection Cost Surface Model User Manual Volume The User Interface October 2008 53 Dialog 4 3 Roads Cost Surface Generation Functionality to tie the new development s access road into the existing road network The intersection of e above is only to be constructed if the length of the access road is shorter than a certain value entered here If the road is longer then it is assumed that the cost of an intersection is included in the cost of the road The cost o
25. ater Cost Surface Data is unchecked then Dialog 3 4 is opened Otherwise Dialog 4 4 Stormwater Cost Surface Generation is opened If box y on Dialog 3 5 Point to Electricity Cost Surface Data is unchecked then Dialog 3 5 is opened Otherwise Dialog 4 5 Electricity Cost Surface Generation is opened Dialog 2 1 Combined Cost Surface is opened If box y on Dialog 3 6 Point to Transportation Cost Data is unchecked then Dialog 3 6 is opened Otherwise Dialog 4 6 Transportation Cost Surface is opened Saves the project and exits the Cost Surface Model application ArcView is closed Cost Surface Model User Manual Volume The User Interface October 2008 7 Section 2 Cost Surface Results Viewing amp Querying Most users of the Cost Surface Model will be primarily interested in querying the results of the model calculations These results can be accessed through the Module Manager Dialog 1 2 by clicking button f labelled Combined This opens the dialog as follows Dialog 2 1 Combined Cost Surface Accessed from Dialog 1 2 Module Manager Button f B Combined Cost Surface Include in Combined Cost Surface a M Sewage Bulk Costs Pipework Costs e M Treatment Costs V Water Bulk Costs M Trunk Costs Reservoir Costs M Treatment Costs M Road Bulk Costs MV Stormwater Drainage Costs IV Electricity Bulk Costs Transmission Line Costs Substation Costs Gen
26. ations shapefile from the list The railway stations shapefile will possibly change from year to year in which case the user will need to point to the updated dataset Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the railway stations buffers shapefile from the list The railway stations buffers shapefile will possibly change from year to year in which case the user will need to point to the updated dataset Cost Surface Model User Manual Volume The User Interface 35 October 2008 Dialog 3 6 Point to Transportation Surface Data Functionality Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the working routes shapefile from the list It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the tables currently in the project Select the origin destination table from the list The origin destination table will possibly change from year to year in which case the user will need to point to the updated table Click the search tool in order to bring up a list of all the tables currently in the project Select the commuter zone table from the list The commuter zone table will possibly change from year to year in which case the user will need to point
27. d commuter zone s The user enters the costs of transport of each mode in the selected commuter zone s Updates the selected commuter zone s with the latest data Generates transportation costs using the information entered to date Cost Surface Model User Manual Volume The User Interface October 2008 71
28. e this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the transmission line buffers shapefile from the list The transmission line buffers shapefile will definitely change from year to year in which case the user will need to point to the updated dataset If this check box is selected then this Dialog 3 5 cannot be accessed from Dialog 1 2 Module Manager It can only be accessed from the Menu Point to Datasets This prevents the inconvenience of Dialog 3 5 opening whenever the user accesses Dialog 4 5 Electricity Cost Surface Generation from the Module Manager If this Dialog 3 5 has been accessed via the Menu Point to Datasets then this button will read Close Cost Surface Model User Manual Volume The User Interface October 2008 31 Dialog 3 5 Point to Electricity Cost Surface Data Functionality If the dialog has been accessed via the Module Manager then this button will read Next gt gt and Dialog 4 5 Electricity Cost Surface Generation will be opened when the button is clicked Cost Surface Model User Manual Volume The User Interface October 2008 32 NOTE Due to the complexities of calculating the transportation costs the user interface has been disabled and only the output results are displayed when the user clicks
29. er day is entered Using m and n above the cost to provide storage capacity per site is calculated Having specified the user inputs and undertaken the tasks detailed in Section 5 2 the user can generate the storage costs for the selected reservoir zone s Cost Surface Model User Manual Volume The User Interface October 2008 48 Clicking button c on the dialog will display the treatment parameters for the selected water works zone s Note the scripting will prompt the user to select a water works zone if none are selected z Water Cost Surface Generation Specify Infrastructure for a b Supply Storage Water Treatment Infrastructure i e Water Works Selected Treatment Zone s Parameters Ml day EDUs Treatment Capacity l 720 l 2057140 p Available Capacity l 120 342857 s Provision of Treatment Capacity Cost Parameters Capital Cost of 1Ml day Treatment Capacity 3 00 R milion t Avg Water Consumption Site 7 Day 350 lites u Calculated Average Capital Cost to provide 1080 R Treatment Capacity for each Site 1050 v Next Steps Generate Supply Costs Close Generate Storage Costs Generate Treatment Costs W Details of the dialog s functionality are included in the table below Dialog 4 2 Water Cost Surface Generation Functionality Clicking the button displays the pipework costing parameters for the selected reservoir zone s
30. erate Combined Cost Surface d Query Combined Cost Surface e Cost Surface Model User Manual Volume The User Interface October 2008 8 This dialog enables the user to specify the various bulk costs that should be incorporated into the cost surface that is being displayed in the view Note that the bulk costs for each of the different services has been previously calculated refer to Section 4 and this process merely sums the individual costs to give a combined cost of the selected bulks Importantly the transportation costs have not been included in the combined cost surface as they are an operating type cost as opposed to a bulk cost Details of the dialog s functionality are included in the table below Dialog 2 1 Combined Cost Surface Functionality Check or uncheck the box in order to include the Sewage bulk costs in the combined cost surface Similarly this can be done for the Water Roads Stormwater Drainage amp Electricity bulk costs Each service s bulk cost is itself made up of various components and the user is enabled to specify which of these components should be included in the combined cost surface If no selection is made then all component costs will be considered if the bulk has been selected using a above The user can choose to add the valuation roll land values to the bulks combined cost surface Cost Surface Model User Manual Volume
31. ets then this button will read Close If the dialog has been accessed via the Module Manager then this button will read Next gt gt and Dialog 4 1 Sewage Cost Surface Generation will be opened when the button is clicked Cost Surface Model User Manual Volume The User Interface 17 October 2008 Dialog 3 2 Point to Water Cost Surface Data Accessed from Menu Point to Databases for Item Water Dialog 1 2 Module Manager Button b Point to Water Cost Surface Data Select Working View Cost Surface Water a Select Shapefiles Cost Surface COSTSURFACE b Water Works Zones WATER WORKS ZONES c Reservoir Zones RESERVOIR ZONES d Trunk Buffers BUFFERS TRUNKS e Reticulation Buffers BUFFERS RETICULATION f Reticulation RETICULATION EE Select Cost Table Water Pipes trunk costs dbf h y Ap Close This dialog enables the user to specify the view and relevant shapefiles to be used in the water bulk costs module Details of the dialog s functionality are included in the table below Cost Surface Model User Manual Volume The User Interface October 2008 18 Dialog 3 2 Point to Water Cost Surface Data Functionality Click the search tool in order to bring up a list of all the views currently in the project Select the view in which the water cost surface shapefiles are situated The selected view
32. ewage cost surface These are the costs of e constructing treatment capacity at the relevant wastewater treatment works in order to accommodate the flows generated by the development of a polygon of the cost surface and e the pipework required to convey sewerage from a cost surface polygon to tie in to the existing network The treatment costs are calculated using parameters entered at a treatment systems level Definition 4 1 a The treatment systems theme comprises polygons representing areas of the Municipality in which the treatment destination of sewerage is common The pipework costs are calculated using parameters entered at a pipework zone level Definition 4 1 6 The pipework zone theme comprises polygons representing areas of the Municipality in which the treatment destination of sewerage is common and the mode whereby the sewerage is transferred to the treatment works is common i e either under gravity or via pumpstation e g the area in which Cost Surface Model User Manual Volume The User Interface October 2008 38 sewerage can flow under gravity to the Phoenix Wastewater Treatment Works is a pipework zone and the area in which sewerage is will be pumped to the Phoenix Works is another zone Clicking button a on the dialog above will display the pipework parameters for the selected pipework zone s Note the scripting will prompt the user to select a pipework zone if none are selected Sewage Cost Surf
33. f an access road varies according to the terrain on which it is built These factors allow the user to increase the cost of an access road in a mountainous area for example Having specified the user inputs and undertaken the tasks detailed in Section 5 3 the user can generate the access roads costs Cost Surface Model User Manual Volume The User Interface October 2008 54 Dialog 4 4 Stormwater Cost Surface Generation Accessed from Dialog 1 2 Module Manager Button d Cae Stormwater Cost Surface Generation Cost of Stormwater Infrastructure Base Infrastructure Cost x Factor x Factor where Base Infrastructure Cost Cost of Pipework gt gt la Factor ja Increase in Cost due to Infrastructure Condition gt gt b Factor Increase in Cost due to River Sensitivities gt gt c Generate Stormwater Discharge Lengths d Generate Stormwater Cost Surface el Close f Details of the dialog s functionality are included in the table below Dialog 4 4 Stormwater Cost Surface Generation Functionality Clicking the button opens Dialog 4 4 1 Stormwater Drainage Infrastructure Clicking the button opens Dialog 4 4 2 Stormwater Infrastructure Condition Factor Clicking the button opens Dialog 4 4 3 Stormwater Discharge Point Sensitivity Cost Surface Model User Manual Volume The User Interface October 2008 55
34. h Costs Fi Site Minimum Maximum Average 584 D 232 270 225 600 D I ddla aad li dd d al User Manual Volume The User Interface 11 October 2008 Details of the dialog s functionality are included in the table below Dialog 2 2 Cost Surface Query Tool Functionality Tool used to select polygon s of Cost Surface theme for query The selections specified under a b and c on Dialog 2 1 are listed here with relevant costs According to the spread of values found in the selection of polygons the minimum maximum and average cost values are displayed Given the bulk selection and the polygon selection the average cost per site is calculated and displayed Cost Surface Model User Manual Volume The User Interface October 2008 12 Section 3 Cost Surface Generation Set Up of Databases The Cost Surface Model is an application that was purpose written for the eThekwini Municipality In order to facilitate it s roll out across departments and to other municipalities where possible the scripting has been soft coded This means that eThekwini specific datasets have not been named in the scripting but rather the user is enabled to point to datasets that the scripting accesses This means that the user has to go through a process of pointing to datasets before parameters can be input or calculations can be run The Cost Surface M
35. is then displayed in the text box alongside It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the water cost surface shapefile from the list It is not envisaged that the user should need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the water works zones shapefile from the list The water works zones shapefile will possibly change from year to year The user will need to point to the updated dataset Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the reservoir zones shapefile from the list The reservoir zones shapefile will change from year to year in which case the user will need to point to the updated dataset Click the search tool in order to bring up a list of all the Cost Surface Model User Manual Volume The User Interface October 2008 19 Dialog 3 2 Point to Water Cost Surface Data Functionality shapefiles currently in the view selected in a above Select the water trunks buffers shapefile from the list The water trunks buffers shapefile will definitely change from year to year in which case the user will need to point to the updated
36. nd thereafter each Cost Surface Model User Manual Volume The User Interface October 2008 62 Dialog 4 5 Electricity Cost Surface Generation Functionality polygon of the cost surface is evaluated to see if it falls within the existing coverage Cost Surface Model User Manual Volume The User Interface October 2008 63 Clicking button b on the dialog above will display the substation costing parameters k A Electricity Cost Surface Generation Specify Infrastructure a b Transmission Lines Substations Substation Infrastructure Provision of Substation Capacity Cost Parameters Capital Cost of New 132k Substation l 15 00 R million m with 1 No 30MVA Transformer m Load Density 2 kVA du Nn Calculated Average Capital Cost to provide R Substation Capacity for each Site 1000 p Nest Steps Generate Transmission Line Costs Close Generate Substation Costs Q Details of the dialog s functionality are included in the table below Dialog 4 5 Electricity Cost Surface Generation Functionality Clicking the button displays the transmission line costing parameters used in the calculations Clicking the button displays the substation costing parameters used in the calculations An average cost per site to provide substation capacity is calculated by considering user inputs m and n All the areas falli
37. ng outside the substation coverage are Cost Surface Model User Manual Volume The User Interface October 2008 64 Dialog 4 5 Electricity Cost Surface Generation Functionality capacity assigned the average cost per site to provide substation Cost Surface Model User Manual Volume The User Interface 65 October 2008 NOTE Due to the complexities of calculating the transportation costs the user interface has been disabled and only the output results are displayed when the user clicks button g on the module manager A cost surface has been calculated for all modes of transport refer to theme ALL MODES COST SURFACE and public transport only refer to theme PUBLIC TRANSPORT ONLY COST SURFACE Details of the user interface are included below for completeness Dialog 4 6 Transportation Cost Surface Generation Accessed from Dialog 1 2 Module Manager Button g Transportation Cost Surface Specify a b c Database SetUp Modal Splits Modal Costs Working Area Next Steps H Generate Routes Generate Costs The transportation module is built around the concept of commuter zones developed from traffic zones and their related origin destination matrix Definition 4 6 a Commuter zones are any number of merged traffic zones retaining the integrity of the traffic zones origin destination information
38. nsportation cost surface shapefiles are situated The selected view is then displayed in the text box alongside It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the transportation cost surface shapefile from the list It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the traffic zones shapefile from the list The traffic zones shapefile will possibly change from year to year in which case the user will need to point to the updated dataset Cost Surface Model User Manual Volume The User Interface October 2008 34 Dialog 3 6 Point to Transportation Surface Data Functionality Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the commuter zones shapefile from the list Refer to Definition 4 6 a on page 66 for information on commuter zones The commuter zones shapefile will possibly change from year to year in which case the user will need to point to the updated dataset Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the railway st
39. nt to Stormwater Drainage Costs Data Select Working View Cost Surface Stormwater a Select Shapefiles Cost Surface COST SURFACE b Discharge Points DISCHARGE POINTS n River Sensitivity Polygons ERRPPR POLYGONS d Infrastructure Condition INFRASTRUCTURE CONDIT a Generated Pipes GENERATED PIPES f y Do not show at Startup Close z This dialog enables the user to specify the view and relevant shapefiles to be used in the stormwater mitigation bulk costs module Details of the dialog s functionality are included in the table below Cost Surface Model User Manual Volume The User Interface October 2008 26 Dialog 3 4 Point to Stormwater Cost Surface Data Functionality Click the search tool in order to bring up a list of all the views currently in the project Select the view in which the stormwater cost surface shapefiles are situated The selected view is then displayed in the text box alongside It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the stormwater cost surface shapefile from the list It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the discharge points shapefile fr
40. nu Point to Datasets This prevents the inconvenience of Dialog 3 4 opening whenever the user accesses Dialog 4 4 Stormwater Cost Surface Generation from the Module Manager If this Dialog 3 4 has been accessed via the Menu Point to Datasets then this button will read Close If the dialog has been accessed via the Module Manager then this button will read Next gt gt and Dialog 4 4 Stormwater Cost Surface Generation will be opened when the button is clicked Cost Surface Model User Manual Volume The User Interface October 2008 28 Dialog 3 5 Point to Electricity Cost Surface Data Accessed from Menu Point to Databases for Item Electricity Dialog 1 2 Module Manager Button e R Point to Electricity Cost Surface Data xi Select Working View Cost Surface Electricity Select Shapefiles Cost Surface COSTSURFACE Substations SUBSTATIONS Substation Coverage SUBSTATION COVERAGE Transmission Buffers BUFFERS TRANSMISSION low g BERBE Select Cost Table l y Do not show at Startup This dialog enables the user to specify the view and relevant shapefiles to be used in the electricity bulk costs module Details of the dialog s functionality are included in the table below Cost Surface Model User Manual Volume The User Interface October 2008 29 Dialog 3 5 P
41. odel is however provided to the Municipality with all relevant datasets pointed to and it is not envisaged that the user will have to redo the process In order to gain a greater understanding of the requirements of the Cost Surface Model and for completeness the procedures for designating datasets is detailed in this section The dialogs on which the datasets are pointed to are accessed via a menu in the view GUI or from the Dialog 1 2 Module Manager Menu 3 1 Point to Databases for Point to Databases for Sewage Water Roads Electricity Stormwater Combined Commuter Costs This menu enables the user to access the dialogs on which the datasets are specified Refer to Dialogs 3 1 to 3 6 below for further details Cost Surface Model User Manual Volume The User Interface October 2008 13 Dialog 3 1 Point to Sewage Cost Surface Data Accessed from Menu Point to Databases for Item Sewage Dialog 1 2 Module Manager Button a Point to Sewage Cost Surface Data Select Working View Cost Surface Sewage a Select Shapefiles Cost Surface COST SURFACE i Treatment Systems TREATMENT SYSTEMS c Pipework Zones PIPEWORK ZONES d Pipework Buffers Select Cost Table Sewage Pipes pipe costs dbf f y Do not show at Startup This dialog enables the user to specify the view and relevant shapefiles to be used in the sewage bulk costs module Details of the dialog
42. oint to Electricity Cost Surface Data Functionality Click the search tool in order to bring up a list of all the views currently in the project Select the view in which the electricity cost surface shapefiles are situated The selected view is then displayed in the text box alongside It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the electricity cost surface shapefile from the list It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the electricity substations shapefile from the list The electricity substations shapefile will possibly change from year to year in which case the user will need to point to the updated dataset Click the search tool in order to bring up a list of all the Cost Surface Model User Manual Volume The User Interface October 2008 30 Dialog 3 5 Point to Electricity Cost Surface Data Functionality shapefiles currently in the view selected in a above Select the substations coverage shapefile from the list Refer to Definition 4 5 a on page 61 for information on substation coverages It is not envisaged that the user should have need to chang
43. om the list The discharge points shapefile may be updated periodically as new stormwater infrastructure is constructed Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the river sensitivity polygons shapefile from the list The river sensitivity polygons may be updated periodically as more water courses are evaluated to determine their Ecological River Rehabilitation Potential Priority Cost Surface Model User Manual Volume The User Interface 27 October 2008 Dialog 3 4 Point to Stormwater Cost Surface Data Functionality Glick the search_tool inorder _to bring up alist of all the The infrastructure condition shapefiles currently in the view selected in aabove Select the category is now an attribute infrastructure conditien shapefile from the tist of the GENERATED PIPES dataset f below The _int iti iiad iodi inf eter Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the generated pipes shapefile from the list The generated pipes shapefile holds the algorith generated pipes The pipes will be replaced in the shapefile when the cost surface is recalculated If this check box is selected then this Dialog 3 4 cannot be accessed from Dialog 1 2 Module Manager It can only be accessed from the Me
44. pacity for each Site tee p Next Steps Generate Supply Costs Close Generate Storage Costs Q Generate Treatment Costs Details of the dialog s functionality are included in the table below Dialog 4 2 Water Cost Surface Generation Functionality Clicking the button displays the pipework costing parameters for the selected reservoir zone s Clicking the button displays the storage costing parameters for the selected reservoir zone s Clicking the button displays the treatment costing parameters for the selected water works zones s The storage capacity available in the selected reservoir zone s Cost Surface Model User Manual Volume The User Interface 47 October 2008 Dialog 4 2 Water Cost Surface Generation Functionality is displayed in Ml day and in a unit termed Equivalent Dwelling Units EDU s are calculated by dividing the capacity in Ml day by the average water consumption per site per day refer n below and tells the user how many dwelling units the reservoir zone can support Similar to k above the available capacity or the capacity remaining for new projects is displayed in both Ml day and EDU s Should the available EDU s be zero then the application calculates the cost to supply storage capacity The capital cost to construct storage capacity is entered The expected water consumption per site p
45. pe that is costed for each cost surface polygon is the straight line distance between the polygon under consideration and the closest point of the existing water trunk network This distance is measured using buffers generated around the water trunks Physical pipes are obviously longer than the straight line distance and this factor allows the user to ensure that the modelled pipes are lengthened to more accurately represent the physical situation Having specified the user inputs and undertaken the tasks detailed in Section 5 2 the user can generate the pipework costs for the selected reservoir zone s Cost Surface Model User Manual Volume The User Interface October 2008 46 Clicking button b on the dialog will display the storage parameters for the selected reservoir zone s Note the scripting will prompt the user to select a reservoir zone if none are selected Water Cost Surface Generation Specify Infrastructure for b c Supply Treatment Water Storage Infrastructure i e Reservoirs Selected Reservoir Zone s Parameters Ml EDUs Storage Capacity 999 1427140 j Available Capacity 499 l 712857 k EDUs Equivalent Dwelling Units for l 2 Days Storage Provision of Storage Capacity Cost Parameters Capital Cost of 1MI Storage Capacity 1 5 R milion M Avg Water Consumption Site Day 350 litres N Calculated Average Capital Cost to provide 1080 R Storage Ca
46. plits for the Traffic Zonefs for inter zone travel q bus 5 taxi 5 train 5 private vehicle 5 for intra zone travel f i e travel to station for train commuters in origin zone total 100 bus taxi other no cost total 100 Update Selected Commuter Zone s h Next Steps Close Generate Routes Generate Costs Details of the dialog s functionality are included in the table below Dialog 4 6 Transportation Cost Surface Generation Functionality Clicking the button displays the step processes for setting up datasets relevant to the transportation module Clicking the button displays the modal split information for the selected commuter zone s Clicking the button displays the modal costs information for the Cost Surface Model User Manual Volume The User Interface 68 October 2008 Dialog 4 6 Transportation Cost Surface Generation Functionality selected commuter zone s Inter zone travel refers to movement between different commuter zones i e from origin to destination The different proportions of commuters using different modes of inter zone transport in the selected commuter zone s are entered by the user Intra zone travel refers to travel within the same commuter zone and is limited to commuters switching mode to train travel only i e how do the people who travel inter zone by train get
47. s not impeded It is not envisaged that any of the parameters on this dialog need be changed by the user Details of the dialog s functionality are included in the table below Cost Surface Model User Manual Volume The User Interface October 2008 4 Dialog 1 1 Point to Combined Costs Surface Data Functionality Click the search tool in order to bring up a list of all the views currently in the project Select the view in which the combined cost surface shapefile is situated The selected view is then displayed in the text box alongside and this view is opened when querying of the combined cost surface is undertaken refer to Section 2 It is not envisaged that the user should have need to change this value Click the search tool in order to bring up a list of all the shapefiles currently in the view selected in a above Select the combined cost surface shapefile from the list It is not envisaged that the user should have need to change this value Each polygon of the cost surface is approximately 40ha in extent It has been calculated that this is roughly the size of a 500 unit housing project All costs to provide bulks to a polygon are divided by this number in order to arrive at a cost per site It is not envisaged that the user should have need to change this value Clicking this Next button will open Dialog 1 2 Module Manager refer below for details
48. s based on empirical data Cost Surface Model User Manual Volume The User Interface 58 October 2008 Dialog 4 4 3 Stormwater Discharge Point Sensitivity Factor Accessed from Dialog 4 4 Stormwater Cost Surface Generation Button c Stormwater Cost Surface Generation Factor 2 Sensitivity of Water Course Increase Cost of Pipe by Factor when Ecological River Rehabilitation Potential Priority Ranking is Factor Category 1 Extreme Category 2 High Category 3 Moderate Category 4 Modest Category 5 Low eo Generate Stormwater Discharge Lengths Generate Stormwater Cost Surface Close Details of the dialog s functionality are included in the table below Dialog 4 4 3 Stormwater Discharge Point Sensitivity Factor Functionality general Modify factors based on empirical data Cost Surface Model User Manual Volume The User Interface October 2008 59 Dialog 4 5 Electricity Cost Surface Generation Accessed from Dialog 1 2 Module Manager Button e A Electricity Cost Surface Generation Specify Infrastructure a i b Substations Working Area Next Steps Generate Transmission Line Costs Close Generate Substation Costs There are two categories of bulk costs considered for the electricity cost surface These are the costs of e the transmission lines required to convey electricity from the existing ne
49. then this option will be enabled and the user can input the value of a suitably sized pumpstation to pump the flows Allows the user to select an alternative pipe size and hence an alternative unit cost to be used in the cost calculations The length of pipe that is costed for each cost surface polygon is the straight line distance between the polygon under consideration and the closest point of the existing sewer network This distance is measured using buffers generated around the sewer network Physical pipes are obviously longer than the straight line distance and this factor allows the user to ensure that the modelled pipes are lengthened to more accurately represent the physical situation In reality there is a limit as to how long a pipe will be built to tie a new development into an existing network It may in fact be more economical to construct a new wastewater treatment works nearer the development than to run a long pipe for many Cost Surface Model User Manual Volume The User Interface October 2008 40 Dialog 4 1 Sewage Cost Surface Generation Functionality kilometres Checking this box will ensure that the application considers this option in accordance with the values specified in j amp k below The application uses this number in conjunction with the number specified in k below to determine if it is more economical to build a new treatment works than
50. tton f The italics string indicates the location at which the dialog can be found e g Dialog 1 1 is activated at start up or through a menu item or via a button on a dialog grey shaded lower case letters on the dialogs indicate areas functionalities on the dialog that are to be discussed in the text table following the dialog and the right column of each table is provided for the user to make notes during training and thereafter Cost Surface Model User Manual Volume The User Interface October 2008 2 Section 1 Getting Started e Open ArcView 3 x e Under menu File click item Open Project e Navigate to the folder cost surface model projects and open the latest apr file Cost Surface Model User Manual Volume The User Interface October 2008 3 Dialog 1 1 Point to Combined Costs Surface Data Accessed from Automatic At Start Up Menu Point to Databases for Item Combined Dialog 1 2 Module Manager Button f Point to Combined Costs Surface Data Select View Cost Surface Combinec a Select Cost Surface Shapefile COST SURFACE b c Assume 500 Sites per Polygon of Cost Surface Shapefile Next gt gt d This dialog opens on start up in order that the application critical dataset the cost surface shapefile and the number of sites per cost surface polygon can be designated at the outset in order that future functionality i
51. twork to a substation positioned at a cost surface polygon that is being developed e constructing substations where they are required Cost Surface Model User Manual Volume The User Interface October 2008 60 Clicking button a on the dialog above will display the transmission line parameters A Electricity Cost Surface Generation Specify Infrastructure a b Substations Transmission Line Infrastructure Transmission Line Costing Unit Cost 1 00 R million km C Length Calibration Factor 1 3 d Calculation of Existing Substation Coverage Load Density per dwelling unit 2 kVA dwelling Dwelling Unit Density 125 qu hectare f Load Density per hectare 25 kVA hectare g Reach Factor 1 75 h Next Steps Generate Transmission Line Costs j Close Generate Substation Costs The application determines if a new substation is required for each developing polygon of the cost surface by developing what is known as the substation coverage Definition 4 5 a a substation coverage is the theoretical extent to which areas are serviced by existing substations Polygons falling outside these areas have new substations and transmission lines constructed and their costs assessed Details of the dialog s functionality are included in the table below Dialog 4 5 Electricity Cost Surface Generation Functionality Clicking the button displays the transmission line costing par
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