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N03-07 - University of Idaho

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1. Benchmark Descriptions and Scores 9 50 36 Moderate catchment Discontinuous joints random orientation Undulating Occasional differential erosion features Moderate difference in erosion rates 2 6 Moderate precip or short freezing periods or intermittent water on slope Occasional events 50 of the time Moderate 80 of low design 27 75 28 Limited catchment Discontinuous joints adverse orientation Planar Many differential erosion features Large difference in erosion rates 3 9 High precip or long freezing periods or continual water on slope Many events 75 of the time Limited 60 of low design 81 100 20 No catchment Continuous joints adverse orientation Clay slickensided Major differential erosion features Extreme difference in erosion rates 4 12 High precip and long freezing periods or continual water on slope and long freezing periods Constant events 100 of the time Very limited 4096 of low design Note TOTAL HAZARD SCORE sum of 10 scores has a value from 30 to 810 Average vehicle risk AVR 100 x Avg Daily Traffic x Slope Length mi Posted Speed Limit mph x 24 hr day Note AVR greater than 10096 indicates more than one vehicle is subjected to the site hazard simultaneously Adaptation of Hazard System to Idaho Highways During the 1990 s a number of states adopted the RHRS or a modified version specially desig
2. This is based on the geological assessment of particular potential problems at the site that may not have been maintenance issues in 14 18 the past but could increase the hazard potential of the site For example steep terrain with numerous first order drainages could be fairly stable in typical precipitation years but could generate numerous mud slides or debris flows during storm events with return periods of 50 or 100 years Miscellaneous information on site geology photographs maintenance history accident counts and general comments can be added to the HiSIMS data base using the appropriate entry fields We recommend that maintenance personnel use the Historic Data box on the Slope Data Page to track and update maintenance issues associated with slope hazard sites For geologic information on key structures the type of structure can be designated with a single letter code entered in either the dip direction or the dip field such as J124 45 for a joint set with dip direction of 124 and dip of 45 or F322 68 for a foliation with dip direction of 322 and dip of 68 The HiSIMS website on the ITD intranet is ready for operation except for two aspects that will need to be completed by ITD Information Systems personnel in Boise The first is to finalize and implement a security firewall protocol that will allow the uploading of digital images photographs from District offices to the central website The second task is
3. and Average Vehicle Risk To sort by the category that you would like click on the name heading of that column The page will refresh with the rows now sorted by that column When the page is first displayed the rows will be sorted by Slope ID Next to display the slope detail page click on the Slope ID link Quick Reference Characteristic Search Build a sentence describing your desired slope search Press the Search button Sort rows by clicking the column heading to sort by that characteristic Click on the link of the Slope ID 24 25 Saving Searches Once you have completed a Characteristic Driven search you may want to save your search so that you will not need to enter the details again but can display any new road cuts that match your criteria Saving searches can be accomplished by going back to the Characteristic Driven search main page with the use of the menu or the Back button in your browser Once there build or confirm the search criteria sentence you would l Saved Searches like to save Then in the text box right a a EROMTERES AVR 81 Or600 after the words Save this search type in the name of the search as Rockfall Hazard Rating is more than End you would like to see 1t appear later Figure 11 Then os petis District is District 2 blank alli Save button to the right of the Average Daily Traffic is text box This will save all of the A
4. 14 6 8 10 11 81 lt 14 11 lt 6 lt 10 50 70 3 gt 28 gt 25 gt 28 gt 16 9 20 27 18 25 19 27 13 15 2 16 19 14 17 13 18 11 12 81 lt 16 lt 14 13 11 gt 70 3 gt 38 gt 27 gt 36 gt 18 9 28 38 19 26 25 36 15 17 2 19 27 14 18 18 24 12 14 81 lt 19 lt 14 lt 18 lt 12 10 Figure 2 Near vertical rock slope with inadequate catch ditch Approximately 100 highway slope segments have been rated using this system or an earlier version of it Evaluators used paper forms to gather input data in the field then that information was transferred to a PC computer database Rather than store any digital images directly in the computer database due to storage space limitations they were stored in a separate media CD ROM to be available for retrieval as needed RECOMMENDATIONS FOR FIELD DATA COLLECTION To maintain consistent and reliable standards for each of the input fields for the highway slope hazard rating ITD should implement data collection protocols to be used statewide in all of the ITD districts Our 11 recommendations for the initial set of protocols are summarized below Site Location The general location should be reported by designating the District and Route Number More specific site location information includes the following 1 Beginning and ending milepost for the slope hazard site recorded to the nearest 0 01 mile if possible The invesitigator should select these boundaries ba
5. 193 Date 6 27 2000 Score 480 itigation Cast Estimates Solution Estimated cost Select a Solution Figure 13 Slope Data Page Starting at the top of the page you find the information about the slope There are many slopes in the database that do not have hazard rating forms attached but do have severity ratings You can only find these slopes by the location search because detailed characteristics about the slope are not known At the very top of the top box is the severity rating 3 for this slope The severity rating goes from 1 to 3 with 3 being the worst The next box down is the Detailed Hazard Rating Form s In this box you will find any and all of the rating forms that have been filled out for this highway slope This slope only has one form many have none If you would like to see the full detail of the hazard rating form click on the blue link that 1s the ID of the form 193 for this road cut This will bring up a printable form The box to the right of this 1s the Historic Data box This will be covered in the Slope History section of this manual The lowest box on this page is the Mitigation Cost Estimates box How to use this box will be covered here and how it works will be covered in later sections of this manual NN Mitigation Cast Estimates Solution Estimated cost Select a Solution Figure 14 No cost estimate 2f When you first come to the
6. Hazard Evaluation Sheet Microsoft Internet Explorer Pl xl File Edit View Favorites Tools Help amp Bak gt A A Asearch Favorites media C B S w H Address e http Jacrap HiSIMS Login Forms PrintableForm asp user Andrew amp XMLID ID1028003975647 Go Links amp amp Windows ESPN 4 amp CNET Jinternet com Webmonkey 4 amp MSDN Travelocity amp Yahoo Mal G SignOnWFB G MSNBC amp LIVERADIO amp Googe eBay ROADCUT HAZARD EVALUATION SHEET ITD ROADCUT SURVEY PROJECT Rated By Andrew Date 7 29 2002 Les 7 ps 5 Posted Speed Limit 5 595 Estimated Sight Distance Impacted Road Length Roadway Width Class Soil or Rock ne INNEN GONENNMI Catchment 50 to 100 Erosion Raveling Fill Settlement Slow Moving Land Mass Ritchie Criteria Width 9 6 Office Portion Average Daily Traffic Failure Frequency Accidents in last 5 years The selected criteria for each category is highli D dll 9 7 8 N N B 7 Done TE Local intranet 48 Slope Info Page iw pomo tmo MES ceo 077070 LEE Rer La mm FE ERES HE tnm T grow p nmn Sij rema eai aveire o aw soo os AB I EE m c a MIT 9T DOLI E alo x ETT TM Page icrusalt Intermet Ex urer Fin Edt viw Fawekes Took Help Heak gt Qoi dA Ash Foes Mese Sh C I i Pkdress hiig nere pfHSTMS Login Slog vies sp TD ERR t lnn es ons ps OCC C WE Slope Data P
7. are looking for you can then go to the slope information page that will give you greater detail on that slope iY do SE ey sae LE LI Ug Be NAI 7C o T UE wp morer gjene vew nuna mic a I er Z HiSIMS Microsoft Internet Explorer p BRETT ES File Edit view Favorites Tools Help EJ Back gt amp A Qsearch 3jFavorites Meda C4 E 5 s Address http acrap HiSIMS Login Search LocationDriven asp view statewide Z Go un Links ideas 4 amp ESPN 4 amp CNET internet com amp Webmonkey 4 amp MSDN amp jTravelocity ahoo Mail 4 amp SignOn WFB 4 amp MSNBC 4 amp LIVERADIO amp jGooge amp eBay Tuesday 2002 Idaho Transportation Department Location Search BEEN d Route v between and Get Data Results for all routes in the state Next gt gt Mile Post Results come from map selection or route and MP selection http acrap HISIMS Login Search LocationDriven asp view district2 faa eR Local intranet Z Figure 2 Location search start page As shown in Figure 2 you are presented with a map of Idaho on the left and By Route and MP columns on the right In the column on the right you also see a list of all road slopes that meet the current criteria full state all routes all milepost markers This list is very long and can be seen in groups of 20 by using the Next gt gt and lt lt Back links As you refine your search this list will
8. below because they were in the original systems and have been maintained by Idaho ITD for developing its own rockfall rating system This rockfall hazard evaluation tool became the foundation for a highway safety pooled fund study sponsored by the FHWA and 10 states led by the Oregon Department of Transportation The FHWA rockfall hazard rating system RHRS that resulted from this study had much in common with the earlier Wyllie system but used four benchmarks and related scores 3 9 27 81 rather than the five used by Wyllie Tt also included a separate option for evaluating differential The Table 2 Highway rockfall hazard rating system according to Wyllie 1987 Site Characteristic Slope height ft Slope length ft Catch ditch effectiveness Structural geology Rock fracture friction Rock block size ft Climate and water Rockfall history Traffic quantity Decision site distance Note TOTAL HAZARD SCORE sum has a value from 10 to 810 15 50 Meets Ritchie criteria Massive no fractures dipping out of slope Rough irregular 0 5 Dry warm winter Nil Very light Adequate stopping distance full shoulder Benchmark Descriptions and Scores 15 25 50 100 Adequate width inadequate depth Discontinuous fractures with random orientations Undulating 0 5 1 Moderate rainfall warm winter Occasional minor events Recreational only Good visibility and shoul
9. commentata Description CostPerUnit UnitID thiCostUnitTypes Value Mame Description R aadWidkh Precip Web Application Information The web application was designed using ASP JavaScript HTML Cookies and XML All of the interfacing to the database was done in ASP General Information If the database changes to any other database provider other than Microsoft SQL Server the DBConnection asp page will need to be modified to connect to the new database source All other interfacing to the database uses SQL Standard Query Language and should work with most major databases with only minor modification Menu System The menu is stored in a text file called menu txt and 1s displayed using ASP to source the data and JavaScript and CSS to make it work on the client side 43 Location Driven Search uses a map system partially provided by Castle Rock Consultants Inc The map uses ASP and DIV overlays to place the roads and other map features JavaScript makes each of the districts highlight on mouse over Clicking on a district takes you back to the same page but with an argument in the query string of the district number The page then displays a zoomed in map of the district with a list of the roads in that district on the right Above this list on the right is a number of options to search for a slope by route and MP Clicking on a slope will take the user to the slope information page covered below Characteristic D
10. in the last screen will be showing up as a link Figures 26 27 Clicking on the link will make the data show up in the text box to the right of the link You can add as many Figure 26 Historic data link pieces of historic data to a roadside slope site as you think would be useful Historic Data add new data 3 5 2003 Historic Data add new data 3 3 2003 Day 5 we are still buried under 3 4 2003 the rockslide on state highway 64 We can hear crews working their way down but don Figure 27 Historic data 35 Cost Matrix The next menu option Cost Matrix is connected to the last one Mitigation Methods This option along with Mitigation Methods is only for super users of the HiSIMS application and will show up in the menu based on log on privileges Users that would like to edit and view the Cost Matrix and the Mitigation Methods sections of the HiSIMS web application should contact their system administrator Edit Cost Matrix Ewary time that wau enter and into the Oty Quastian field the cost caloulator wil add another baxt bos for the user Eo enter quanttios Cost per Unit Rock dowels untens Rock bolt 25 kip Debris cleanup Jersey barrier Wire mesh r anchors Cabir met v anichars Fiber reinforced shotcrete TTT Tg Name Gale type Qty Question Cost Comments Slope scaling 15 has sx 2000 sq per crew hou lin f Enter avenge depth ar Depthx sg t sq I pe EdiFarmela
11. mare than Saved Searches Find slope sites where AVR 81 Or 600 Rockfall Hazard Rating is zl n 10 District is sx blank all Average Daily Traffic is xl sd Average Vehicle Risk score is S isd r i Figure 7 More than 600 startin 8 page for the charac teristi C driven search lu Search Save this search as Save Slopes can have a hazard rating betwe en 30 and 810 If you would like to see all of the road cuts that have a rating higher than 600 then you would pick more than in the first drop down menu and then put in 600 in the text box Figure 7 Figure 6 Characteristic Driven Search You can think of this as building a sentence that describes the slope for which you are searching So if you want all of the slopes that have been rated with a hazard level of more than 600 and are rock rather than soil then you build a sentence to describe the slope Find slope sites where the Rockfall Hazard Rating is more than 600 and the Problem Type is rock This sentence is built in Figure 8 Rackfall Hazard Rating Is more than soo District is Distict2 blank all Average Daily Traffic is Average Vehicle Risk score Is sd Figure 8 Example 1 for conditional search At this point you could continue building the sentence with the use of the logical And Or drop down boxes on the left For example you
12. may want the slopes described in the sentence above but also want any slope that shows up with an Average Vehicle Risk score of 81 the highest severity 23 level if the AVR score is your highest priority Figure 9 shows this addition to the search criteria sentence Rockfall Hazard Rating is more than io District is District2 blank all Average Daily Traffic is sd Or Average Vehicle Risk score is fequalta gt fa Figure 9 Example 2 for conditional search You can use any or all of the criteria at the same time and the slopes described by that sentence will be returned Once you have the search criteria sentence looking the way that you want it then you need to press the Search button to proceed The system will display a search results page similar to the page shown in Figure 10 ey Idaho Transportation Department Search Results User Name Andrew Sign Select the name of the catagory to sort by that catagory Select the District to see the detailes for that report District Route Beg MP Severity Slope ID Hazard Score Average Daily Traffic Average Vehicle Risk 2 US 95 3195 85 3 253 300 4100 81 2 US 95 304 6 2 252 270 3600 81 2 SH 64 24 5 3 193 480 350 81 2 SH 162 4 4 1 43 462 580 81 2 SH 99 n 2 1 372 710 81 Figure 10 Search Results The results that are now shown Figure 10 can be sorted by any of the five categories Slope ID Hazard Rating Problem Type Average Daily Traffic
13. previously filled in 33 Slope History You have succe As we move down the main menu we next come to the Slope History section While this section of the HiSIMS web application is generally entered via the Slope Data Page you can also get to the page directly from the main menu qm m ET EN m E T b dj h Mil m d p s i In E ES h 2 WI m a Idaho Transportation Department P 2o 2 JI NE S ju E NN Slope History Add historical data to a slope Begining MP Ending MP 1 Date 5 5 2003 Route Selects Route Information Add io Slope To add histoncal data to an existimg slope site or to view and interegate existing slape tes pease tee the Search page Figure 23 Blank Slope History page If you use the main menu to navigate to the Slope History page then you will see something like the page shown in Figure 23 with none of the values filled in except for the date This is because you have not selected a slope to attach the historic data to What you will need to do in this case is select the route and milepost information for the slope to which you would like the data attached If when you enter these values they don t match up with any of the highway slopes in the database you will be taken to the On line form so that you may add the slope site If the slope site already has been rated then the historic data will be added to that da
14. 7 and 81 same as the RHRS However in the case of a rock slope C1 and C2 are used in conjunction with S11 to obtain a single numerical score for catch ditch effectiveness The rationale is that slope height and steepness effects on rockfall hazard are controlled tempered by the catch ditch effectiveness primarily width at a given site That is a high rock slope should not be assigned a high score 81 if an adequate catch ditch is in place at the toe of the slope The criteria used for catch ditch effectiveness is based on information provided in the Rockfall Catchment Area Design Guide from the Oregon DOT Pierson et al 2002 Application to the Idaho slope hazard system is summarized in Table 4 In the case of a soil slope that could be subject to erosion or landslide activity the effectiveness of a catch ditch and or barriers is assumed to depend on the same factors C1 C2 S11 but is handled through a separate factor for soil slopes only C3 Though not required at each site photographs or digital images of the highway slope are highly recommended and should be incorporated into the computerized database see Figures 1 and 2 Optional field input for the Idaho slope hazard database includes information on geologic conditions such as the orientation and planarity of rock discontinuities size of rock blocks or landslide debris that may be deposited on the roadway impact patterns dents of rock debris on the pavement climate precipitatio
15. 8 10 programmer days 5 Develop an e mail electronic submittal form for remote Maintenance Shops without intranet access This enhancement will require significant planning for formatting and electronic interfacing with HiSIMS prior to development work A front end module likely will need to be produced for HiSIMS to make it ready for receiving such e mail submittals 10 12 programmer days ACKNOWLEDGEMENTS The authors wish to thank Robert Smith Keith Nottingham Brian Bannan and Millie Miles of the Idaho Transportation Department ITD for their support of this project Numerous ITD Maintenance personnel around the state provided invaluable assistance during the rockfall severity inventory and follow up work Most of the field work was conducted by University graduate students Shari Silverman and Angela Taylor The initial ACCESS data base that eventually led to HiSIMS was originated and developed by Shari Silverman Funding was provided by ITD for this project via the National Institute for Advanced Transportation Technology at the University of Idaho directed by Dr Michael Kyte REFERENCES Lowell S and P Morin 2000 Unstable Slope Management Washington State Transportation Research News v 27 Transportation Research Board Washington DC Pierson L A S Davis and R Van Vickle 1990 Rockfall Hazard Rating System Implementation Manual Federal Highway Adminstration Report FHWA OR EG 90 01 Federal Highway Administrati
16. Aie OSG ee 084 99 23 93 9 3 905 eee oars 4 Raine OMMS shit cots Pao P bed Ee do EOD SR ERE d 13 Slope HIStory 2deerdesaeeRbuueE Deke sede XU SR RR UE EHE Ra 18 Cost Maitix uadbebtesc ee Th bE ee TRE RUPTA Be a 20 Mitigation Methods 0 0c ccc ne ees 27 ecu PP 23 Application Overview The HiSIMS Highway Slope Instability Management System web application can and should be used to track the history and hazard of highway slopes in the state of Idaho The application uses a hazard rating system that allows the user to determine which sites are in the most immediate need of repair All costs calculated by the system should be questioned and examined if they do not seem reasonable for the given site There are numerous variables that cannot be taken into account by the system and will need the expert eye of an ITD planner or engineer 17 The site can be found at http itdtest hisims as of July 2003 and uses only a web interface The preferred browser is Internet Explorer IE but the site will work just as well with Netscape Navigator If you have trouble connecting to the application or have trouble with the application in any way please contact your ITD system administrator When you have connected to the application via your web browser of choice you will be presented with a user login screen Fig 1 You will need a HiSIMS User Name and Password to access the application at this point These may be obtained fr
17. Development and Implementation of the Idaho Highway Slope Instability and Management System HiSIMS Prepared for Idaho Transportation Department Boise Idaho Research Contract No SPR 0010 027 142 Report Budget Number KLK466 NIATT Report ZN03 07 By National Institute for Advanced Transportation Technology NIATT University of Idaho Principal Investigator Stanley M Miller Ph D P E Professor of Geological Engineering University of Idaho Moscow Idaho 83844 3024 Tel 208 885 5715 Email smmiller uidaho edu June 2003 ABSTRACT Following initiatives and recommendations from the Federal Highway Administration FHWA a number of state highway departments over the last 12 years have developed and implemented rockfall hazard management programs for highways The primary goal is to improve highway safety but reductions in maintenance and detour costs also result when slope hazards are mitigated Additionally a systematic method for agencies to identify and prioritize slope hazard sites allows for highway funds to be allocated efficiently for construction projects or counter measures to deal with the recognized hazards Some state highway departments have expanded the original focus on rockfall hazards to also include other types of unstable slope activity such as landslides debris flows and accelerated erosion A systematic highway slope hazard assessment protocol has been developed for the State of Idaho which consists o
18. a given route for the first 15 miles then leave the first text box blank and enter 15 into the second text box After pressing the Get Data button you will be presented with a list of the sites that have an End MP value of less than 15 Figure 5 shows this performed on the previous search As you can see this brought our list down to four sites from the previous six sites The last thing that you will want to do with the data that you have procured is to go to the Slope Data Page clicking on the link identifier number that contains the name of the route This page will be covered in detail in the next section Quick Reference Location Search Pick the district on the map Pick the route from the Route drop down menu Enter mileposts search range for the slope site Press the Get Data button Click on the link of the route name 22 Characteristic Driven The second method for locating a desired highway slope s that has been rated with the hazard scoring system is the Slope Characteristic search found in the menu just under the Location Driven search This search generally lets you locate a highway slope based on information about the slope and does not discriminate based on location in the state Tuesday J ly 16 2002 Characteristic Search User Name Andrew Sign Off Fillin as many or as few categories below as needed then click the Search button Rockfall Hazard Rating is
19. age lope Severiky Ralirsg 1 Enslrit 1 Roube T a0 Busy MP 18 755 End MP 150 55 listoric Data acd new data 11 14 2002 This slope waa rlennrd of amail litigation Cost Estimates Solution Estimated cost Wire mash wanchars s LUUUUOU Le El titre s Slope History Page QE ee REI MER Lu m qnom rp i Bl C MEC er 2 Gope History Eig m Slope History Add historical data to a slope Route 30 Begining MP 18 753 Ending MP 19 69 Dabe n 14 2002 information Assis To add historical data to an existing slope site ar tp view and interegate existing slope sites please see the Search page Ei plow B 49 Mitigation Methods Page Mes mun cen NT NAMA A A pna ee eom 7707 mitem mee cmn oe ENTIA CNN T UIT ONT A EJA Mitigation Methods a Explorer wE 5 x Fie Ede view Favortes Took nep EJ Pak 5 e O A Aeh Carat gens G che CP BL i Address ihn oer HSTMSJ Login Mitigation E dk Mitigation pitash fs T funem Fe nr Is atch a 250 Dn eade m Wh ide oe Das S Pede po lrks B Windews JESN GEJCMET dEjr emetrom 2 Webrerhey JMDN dE Tewebety Yahoo Mad de S9n0n wes EMNE d uvERADIO dEjGeje jiy 77 Pre i 12 Asl P UN CE d Idaho Transportation Department Edit Mitigation Methods Name Description Slope sealing Guys get up on the hill with E Save Changes Delete POY bars and remove the loose cocks l Fock dowe
20. anagement page is specific for the user that logged on to the application Here you have access to all of the forms that you have worked on in the past both submitted and in progress If the hazard rating has already been submitted to the server then you will be able to see a printable version of the hazard rating form If the form is incomplete then you will be able to make further modifications to the form and re save or submit the data for the slope site The second section is the On line Form This is used to enter a new slope site and give it a hazard rating When you submit or save this form it will automatically be added to the Form Management page Once a form is submitted it becomes part of the permanent web database and can only be modified by the system manager Slope History The third section will normally be used in conjunction with one of the two search methods When you have found the slope that you want or entered a new road slope then you will be able to add comments to that slope with dates attached so that a history of the repairs and or failures of that slope can be viewed by later users This capability 1s designed to be used by repair personnel after they return from the given site If you go directly to this section from the menu and enter data for a site that does not already exist in the database then you will be taken to the hazard rating form so that you can add a new form for the slope Cost Matrix Only users with appropr
21. ap HiSIMS Login Search LocationDriven asp view statewide Location Search By Route and MP Route between and Get Data Results for all routes in the state User Name Andrew Sign Off 19 69 18 978 20 853 21 365 21 53 21 555 24 854 25 27 25 888 26 058 26 23 29 926 30 408 30 977 Next gt gt u ES Mile Post Results come from map selection or route and MP selection 4 http facrap HiSIMS Login Search LocationDriven asp view district2 I ag Local intranet Z 45 Characteristic Driven Search Characteristic Search Fill in as many or as few categories below as needed then click the Search button If you have any questions please see help Saved Searches Find slope sites where AVR 81 Or 600 gt Rockfall Hazard Rating is zl 810 District is blank all H Average Daily Traffic is H a H Average Vehicle Risk score is zl Search Search Save this search as Save Form Management reny jv oc W LAS ee ere we Tig p oT ejm Quem 3 en i HISIMS Microsoft Internet Explorer 21ni xi Form Management This page will allow you to manage the Hazard Rating forms that you have filled in and the one s that you are working on Remove will simply remove the row from this page it will not remove the form from the server View will take you to a printable version of the submitbed forms and an ochtable version of the un
22. avaScript changes the values in other option boxes based on what the user selects The form can be saved before completion or submitted upon completion Slope History Page is primarily entered from the Slope Information Page but can also be entered via the main menu In this page the user can enter a comment about a slope with a date attached for reference later The date is automatically set on page entry but the user has the option of changing the date to enter back log information Edit Cost Matrix and Mitigation Methods Pages work together to allow a user with the appropriate permissions to add edit and delete mitigation methods and their cost These pages are pure ASP referencing SQL There are obviously other pages in the web application but these are the main pages with which the user will interface Flow and Layout Another picture Login Page General Info Mitigation Methods Search Pages Form Management Cost Matrix New Existing i y XML Slope Info Cost calculations History Hazard Score 44 Slope History Screen Shots These may change based on user input once the site goes live Location Driven Search Ey do WE X 77 7 LE LIU eee Y UE wp morer JE 4E iS E HiSIMS Microsoft Internet Explorer D T i it I ni E 4 E File Edit View Favorites Tools Help Bak gt amp fat Qsearch amp jFavorites Media Eye amp s Address http acr
23. be measured as the horizontal distance from the toe of slope to the edge of pavement Other Site Information 13 14 15 16 17 Average daily traffic counts ADT for this segment of highway This information is readily available from ITD resources The actual count should be recorded even though HiSIMS uses categories e g 200 200 1000 and so on Failure frequency at the site This is based on historical experience with cleanup of slope failure debris at the site by ITD maintenance crews The investigator should select the appropriate category from the Idaho slope hazard rating system Maintenance and cleanup of slope failure debris at the site This is based on historical experience and site characteristics that may be conducive or detrimental to the cleanup of slope failure debris For example some sites may allow ready disposal of debris off the shoulder of the road while other sites near streams may require loading and trucking of debris for disposal The investigator should select the appropriate category from the Idaho slope hazard rating system Traffic impacts and delays at the site due to a slope failure This is based on historical experience with the extent of cleanup and on the availability of alternate routes in the vicinity for detours The investigator should select the appropriate category from the Idaho slope hazard rating system Potential for a major event not observed in recent years at the slope site
24. bic yards and crew hours Your choice here will obviously have a profound effect on the cost of slope mitigation The next column is only for Unit types that need another user quantity to do the calculation For instance square feet 1s straightforward and is based exclusively on the surface area of the slope In contrast a lineal foot unit type on gabions would require the user to enter the number of rows for 36 an accurate calculation If the user needs to provide more data then the system will ask the appropriate question This question goes into the text box in this column The other option for a question is to have an and in the text of the question The user will then be presented with two text boxes If you don t need the user to enter two pieces of information then don t use an and in your question The next column is the comments column which can contain any information that you consider useful or would like to save The last column is a button to Edit Formula for the costing At present this 1s just a placeholder for when that functionality 1s added Once you have made the changes that you want to save simply scroll down to the bottom of the page and click the Save Changes button There is no undo so be careful you know what you are doing before making changes on this page 37 Mitigation Methods Finally we come to the Mitigation Methods menu item and menu is main page This menu it
25. ble version of the un submitted forms For quesbons see the Help sechan Remove View Edit Status Date Created Time Created 3 9 2 2002 9 13 a id Submitted 9 20 2002 8 47 E w Submitted 3 26 2003 21 14 E y 4 30 2003 52 13 Figure 22 Form Management The Form Management page shown here is for a user that has four hazard rating forms two of them submitted to the database Once the hazard rating form is submitted a new highway slope site is added to the server and gives everyone the ability to search on any of the specifics of that slope site To put a hazard rating form into your list go to the on line hazard rating form and click the save button near the bottom This will save the form and bring you to this page shown on the left There is no undo for this delete If the hazard rating form has already been submitted you are only deleting it from your Form Manager but it still remains in the server database If you delete a form that has not been submitted it is gone forever q To delete a submitted or an uncompleted hazard rating form click on the trash can icon The next image over in each row 1s the View Edit icon Clicking on this will produce one of two responses If the form has been submitted you will view a printable but not editable version of the hazard rating form If the hazard rating form has not been submitted yet you will be taken back to the on line hazard rating form page that will show all of the fields you
26. box For instance the Routes drop down box starts blank but then fills in when a district 1s selected with the routes that are in that district You will also notice that the user name and date are filled in automatically but you are able to change them if you like If you change the user name to a name that 1s not in the database you will get an error Continuing across the top you will see a Units drop down box You can change this at any point and it will convert all of the values that you have already selected When the form 1s submitted the units will be converted back to English Additional options include the Add Pictures and Add Geological Data buttons near the bottom These allow you to attach optional data to the form to be kept with the form during and after submission Figures 18 19 l Add Pictures to Form Microsoft Internet Explorer S olx HISIMS Add Pictures to Form To add pictures find the picture file with the Browse button and add a description If you would like to remove the file blank aut the two fields When vau are done click Save To Server to return ta the form this will take a second depending on the size of the pictires File Description Browse eT Browse eT PO Browse Save o Serer Figure 18 Picture attaching form As you can see from Figure 18 you can add up to three pictures to each hazard rating form To add a picture
27. cal this will allow for more advanced mapping display and analysis procedures in the future Side of the highway where the slope site is located This designation is taken to be the right side or left side as a motorist travels in a direction of increasing mile post numbers Site Characteristics D 7 Posted speed limit in the immediate vicinity of the slope hazard site It the site is located on a curve this speed limit may be less than the standard 55 or 60 mph for two lane highways Estimated site distance for a driver to see an object on the roadway when approaching the slope hazard site from either direction The recorded site distance should be the shorter minimum of the two measurements taken from the two directions This distance is defined as the measured horizontal distance at which a 6 inch high object disappears from view when the eye height is at 3 5 feet above the roadway surface We have had good field success using a laser handheld range finder to take these measurements Site distance may be affected by horizontal curves or by vertical grade changes along a highway Impacted road length is the typical length of roadway to be affected by a slope failure at the site The actual estimated length should be recorded in the field e g 85 feet even though HiSIMS uses categories e g lt 50 ft 50 200 ft and so on The impacted road length could be as small as 15 feet 13 8 for an isolated rockfall one rock t
28. click on the Browse button this will present you with a file selection dialog In this select the file from its location on your local computer and press the Open button This will fill in the text box to the left of the Browse button Repeat this process for additional pictures as desired Then add a brief description for each of the pictures you are attaching Last click the Save to Server button to upload the picture files to the server and return to the main form 30 i Add Pictures to Form Microsoft Internet Explorer J 51 x HISIMS Add Geological Information to Form Fill in as many ar as few fields as you think would be useful When you are done select Save To Form which will automatically save the data that you have entered and return you ta the farm Dip Direction Di p Precipitation Slope Face Rock or Sail 0 0 Type Key Structures Key Structures Key Structures ATI AI Key Structures Save To Form igure 19 Geologic Data entry form The Add Geological Information to Form window is fairly straightforward Fill in the data that you have and then click the Save To Form button This will add the data to the hazard rating form and close the window If you then click on the Add Geological Data button again you will find your data still intact and ready to edit 1f necessary The last thing you will want to do cubmittn Server cava Form with the On l
29. der width 9 25 35 100 150 Moderate Catchment Fractures form wedges Planar 1 2 Moderate rainfall some freezing Occasional events Moderate Moderate visibility and shoulder width Recommended ditch width and geometry based on slope height and steepness Ritchie 1963 27 35 45 150 200 Limited Catchment Discontinuous fractures dipping out of slope Smooth slickensided 2 5 Moderate rainfall cold winter Regular events Heavy Limited visibility and shoulder width erosion on a soil like slope in contrast to a rock slope case 81 gt 45 gt 200 Nil Continuous fractures dipping out of slope Clay fault gouge gt 5 High rainfall cold winter Major rockfalls rockslides Very heavy continuous Very limited visibility no shoulder characteristic of decision site distance was further quantified using FHWA and AASHTO American Association of State Highway Transportation Officials guidelines for minimum decision site distance as a function of vehicular speed and by calculating a percentage using the actual sight distance The actual site distance ASD is the measured horizontal distance at which a 6 inch high object disappears from view when the eye height is at 3 5 ft above the roadway The decision site distance DSD is defined as the minimum distance ft required for a driver in a moving vehicle to detect a hazard on the roadway make an immediate decis
30. e rockfall problem areas were well known in the state the severity and extent of these problems could not be well established because a comprehensive inventory had not been completed for Idaho highways This resulted in a pattern of reactive response to rockfall events and little focus on evaluating highway slopes for preventative treatments to enhance highway safety and to limit the State s liability for rockfall hazards The initial work to inventory Idaho s highways for rockfall hazards and develop a computer database for managing that information has gradually evolved into a more comprehensive system that includes other slope instabilities such as landslides debris flows and accelerated erosion An initial inventory survey was conducted statewide for sites known by ITD maintenance personnel to produce rockfall or erosional debris on highways The follow up ranking or scoring system for individual highway slope segments was based on the original Rockfall Hazard Rating System proposed by the Federal Highway Administration FHWA in the early 1990 s Pierson et al 1990 Pierson and Van Vickle 1993 but also included extensive modifications adapted for Idaho usage The scoring system relies on two major categories of input 1 the physical characteristics of the slope and its geologic materials and 2 the hazard exposure risk to the traveling public The highway inventory procedure and the development of the slope hazard evaluation method are descr
31. em like the Cost Matrix only available for super users and will not even show up on the standard users menu This section Figure 29 allows you to add edit and remove methods that are then given cost data in the Cost Matrix section mn esrosesdimulch Hydros emd maich Seed w ECB inoia Send WECH ingia Seed w E CB insi Seed wisni pn qi Figure 29 Mitigation Methods main page To add a new mitigation method scroll to the end of the page and fill in the name and description fields Then click the Add New button This will add the method and it will then show up on the Cost Matrix page To edit an existing method make a change to the text in the appropriate fields and click the Save Changes button to update the database To delete a mitigation method click on the Delete button to the far right of the method name and description 38 Credits Project Lead Programmer ITD Contact Hazard Data Database Contact Web Server Contact Dr Stan Miller NIATT University of Idaho Andrew Crapuchettes Crapuchettes Consulting Millie Miles ITD Boise Shari Silverman University of Idaho Chuck Dimick ITD Boise James Taylor ITD Boise 39 Appendix 2 HiSIMS SYSTEM ADMINISTRATOR GUIDE This document provides information needed to install and maintain the HiSIMS Highway Slope Instability Management System web application The development work was done by Andrew Crapuchettes at the directio
32. ep things separate in the event that the system was installed on the same virtual as another web applications e Copy everything from the HiSIMS folder on the HiSIMS CD into this new folder that you have created e Right click on the newly copied folders and turn off Read only When asked propagate to all files and sub directories with the non read only status e If this application will have its own DNS address then resolve the address to this directory e fnot just make a link from the main site to the HiSIMS directory IIS should find the default asp page and you are ready to go The HiSIMS web application is designed to be part of an internal web system and not out on the Internet The data is not passed securely and the login needs to be taken care of by another part of the intranet 41 Database Information The database was originally designed by Shari Silverman University of Idaho in Microsoft Access and was adapted to Microsoft SOL Server for this web application General Information Not all of the tables that are present in the HiSIMS database are used in the web application but contain legacy data from the original Access database All tables in the database tblAnglel tblAnglel Com tblAngle2 tblAngle2Com tblCost tblCostUnitTypes tblEval tblFace2 tblHazard tblHasEval2 tblHistory tblHzNotes tblRoadcut tbIRock tbISD1 tbISD2 tbISD3 tblSD4 tblSevEval2 tblSoil Tables used in web applicat
33. erosion besides rockfall This Idaho slope hazard rating system was intended to follow up the statewide rockfall severity inventory and provide important detailed hazard information for specific sites information that could be used to score compare and prioritize highway slopes for subsequent allocation of mitigation funds to improve highway safety Previous Work Overview of FHWA Rockfall Hazard Rating System A rockfall hazard rating system for highways was proposed by Wyllie 1987 at a geotechnical workshop sponsored by the FHWA Federal Highway Administration It relied on seven physical site characteristics and three risk exposure categories Slope height Slope length Effectiveness of catch ditch at slope toe Slope geometry 1 2 3 4 Geologic structural condition 5 6 7 Shear strength friction of geologic structures Size of rock blocks Climate and water conditions Risk exposure 1 Decision site distance 2 Traffic quantity 3 Rockfall history Scoring weights were assigned to benchmark values for each of the ten characteristics according to a cubic exponential increase in severity see Table 2 A final hazard score for a given site then was obtained by summing the scores from each characteristic A total score greater than 500 indicated a site with high risk of a rockfall induced traffic accident and a total score of 400 to 500 indicated moderate risk Wyllie 1987 English units rather than metric are presented
34. f a two step procedure for hazard ratings 1 a survey rating by maintenance personnel to classify pertinent slope segments as having a very high high or moderate potential of rockfall or erosional debris on the roadway and 2 a detailed slope hazard rating based on extensive modifications of the FHWA Rockfall Hazard Rating System The Idaho Transportation Department slope hazard management system has been developed for its centralized intranet web server that will allow real time operations from multiple users within the transportation agency This intranet web based system is known as Idaho HiSIMS Highway Slope Instability Management System Key Words slope stability highway slopes rockfall slope hazards slope erosion INTRODUCTION Slope instabilities along highways not only increase maintenance costs but also may pose hazards that lead to detours traffic delays and safety issues for the traveling public Limited funds and manpower resources are available for slope maintenance repairs and hazard mitigation projects Thus to improve fiscal efficiency and highway safety some method of rational systematic evaluation of highway slope instabilities and related hazards is needed to assess compare and prioritize rank problematic sites In the late 1990 s the Idaho Transportation Department ITD recognized the need for a rockfall hazard program for highways in the state and began a focused effort to develop such a program Although som
35. for Dist 2 SH 162 the Figure from map down to slopes always the district already be state search the of ES select or A Figure 3 Zoomed in map of District 2 To select a specific route go to the drop down list box that says Route Click on the down arrow and then select the route of your choice Use the button to the right of the milepost text boxes called Get Data to access the server which then will return the list of highway slopes that match the new criteria You will also notice that the text below the route drop down menu is now updated to display your current search criteria Figure 4 shows the list of six sites that were returned after District 2 was selected on the map and Route 162 was selected via the drop down menu Further refinements may be made to the search by adding one or both MP milepost numbers If you are looking for a place on a given route between milepost 50 and 75 then enter that data into the two text boxes provided to the left of the Get Data button You may also add these numbers without a route or district and you will get all of the road slopes between those mileposts for all of the routes in the entire state You can enter just one of the milepost values and press the Get Data button and be able to see all of the sites after the first text box and all of the sites before the second text box So if you are looking for all of the road cut sites on
36. iate permissions can use this and the next section The cost matrix page allows you to edit the cost per unit and the formula associated with that cost You can also edit the questions that the user will receive when calculating the cost for a slope Mitigation Methods This last section is also restricted to only users with appropriate permissions If you feel that you should have these permissions and don t please contact your ITD systems administrator The Mitigation Methods page will allow you to add manage and delete mitigation methods that are used by ITD on hazardous road slopes When you add a new method here you need to go to the Cost Matrix page next and give the method a cost and unit type These are the main sections of the HiSIMS web application The next section of this manual will go into much greater detail 18 on each of these sections and their sub sections 19 Section Detail The sections described below may change slightly in user interface from what is presented but the general flow will not change without appropriate modification being made to this manual Search and the There are two main ways to search for a road slope site main menu search section accesses both Location Driven The first way to find a highway slope based primarily on a graphical interface is to search based on location Location can mean district route milepost or a combination of them all When you have found the slope that you
37. ibed in the following sections as is the ITD web based computer database and management system now known as Idaho HiSIMS Highway Slope Instability Management System HIGHWAY ROCKFALL INVENTORY AND SEVERITY RATINGS Highway maintenance personnel in all six operating districts of the Idaho Transportation Department provided valuable assistance to University personnel in 1999 2000 by completing survey forms and providing first hand knowledge of identified sites prone to at least minor rockfall problems across the State The field forms included information on the highway route number beginning and ending mile post stations for each site and a rockfall severity rating of 1 2 or 3 described as follows 1 Rock debris occasionally sloughs onto the roadway with a low volume that usually requires only minor cleanup 2 Debris occurs on the roadway several times per year with the larger rocks gt 15 cm causing hazardous conditions during some such events 3 Debris occurs on the roadway frequently or in such a manner that produces a hazardous condition such as rockfall on a curve these sites often require immediate attention during or after storms Just over 950 sites along Idaho highways were included in this maintenance survey and inventory Nearly 200 of those sites were identified as having a severity rating of 3 by the highway maintenance personnel see Table 1 Survey results were input to a computer database for ease of future sea
38. ine Form 1s submit or save it Both of these will place your form eure do em ton into the Form Manager covered in the next section for later editing or viewing You will need to have all of the mandatory fields filled in to submit the form to the server but may save the form at any point Saving the form will also put the form on the server so that you can access it from other computers Do not submit the form to the server until you have carefully checked all the fields once a form is submitted it becomes a permanent record on the server and can only be edited by trained IS personnel 31 Severity Rating Form The last menu item in the Rating Forms menu takes you to page that allow you to add a slope without a full hazard rating This page should only be used if data for a full hazard rating 1s not available D i s rs e tan Transportation Department aa Severity Rating Rated by Andrew Date 7 26 2003 User Name Andrew Sign Off Site Information District Select a District v Begin MP Route Select a Route End MP Segment Code Side Select a Side gt GPS Data Long Lat Severity Rating 1 Submitto server Severity Ratings 1 Rock debris occasionally occurs on the roadway with a low volume that usually requires only minor cleanup 2 Debris occurs on the roadway several times per year with the larger rocks gt 6 in causing hazardous conditi
39. int Emerecerage depth ar Depthxisq t sq pe Edit Foma Enter cubic yerds Stent aty calculsban Ede Formals ja ha q il Elope length xeos Mo Oty Guestontorsg EdiFomws Mo Oty Questioniorsg EdiFomwia Mo Oy Questioniorsg EdRFomwde Edit Foma Sd dede edd dul Gablons add 1 row baskets lin a Enernumberotrows usel anger rows x Slop Eda Formala Control blasting preshear 2 25 lin f 2l O Shape Heighix 10x5 Edi Fama Tieback wall 50 Emersq f olwal Useremerssa f olwal Ed Fammde MSE veal Ds Emersg f otwen Useremarseq f orwal Edom Flexible rockfall fence i aa eleo O Eda Foamea Crane 250 oewhr Enterhows needed Userentersheusreed Eda Fomvda Hydrosecd mulch no sqe DI 3 Edi Fora Hydraseed mulch HD 0 07 ha zl rs Seed w ECB installed 32 Bas EO De Seed w ECB installed HD nz o hea ll e Seed wi ECB installed XHD 028 Bat zS e Seed w soil pin geogrid fs fae Be e Savo Changes Figure 28 Cost Matrix main page The items in the list on the left are all of the current mitigation methods available in the database These are added edited and removed using the Mitigation Methods section The second column Cost per unit is a user entry field that is exactly what it sounds like The third is the unit type with which the cost is associated such as lineal feet square feet cu
40. ion tblCost tblCostUnitTypes tblEval tblHazard tblHistory tbIRoadcut The tables that are used are listed with content and use tbICost contains the list of mitigation methods and their associated cost and descriptions This information is used to calculate the repair cost of a given slope Users with the appropriate permissions can edit the table via the Mitigation Method and Cost Matrix sections of the web application tbICostUnitTypes is used by tblCost to keep track of the type of cost units being used This table can only be edited by a database administrator tblEval is a list of the users that can access the web application and add hazard ratings to road cuts tblHazard is the core of the web application holding all of the hazard rating information and scores Data is inserted and retrieved from this table throughout the system tblHistory contains comments about any of the slopes with a data attached to reference what has happened to the slope without filling in a hazard rating form every time work is done on the slope 42 e tblRoadcut is the reference for each slope Each slope is found in this table with a RCID unique identification that is used throughout the system Not all slopes have a hazard rating and are thus not in tblHarzard but all slopes are in tbIRoadcut Flow and Layout A picture best demonstrates this thlRoadcut District E Mail Phone LastName FirstMame
41. ion and take correction action Therefore the percent decision sight distance used in the RHRS is calculated as follows DSD ASD DSD x 100 where DSD is given by DSD 450 ft when posted speed limit is 30 mph 600 ft when posted speed limit is 40 mph 750 ft when posted speed limit is 50 mph 1000 ft when posted speed limit is 60 mph 1100 ft when posted speed limit is 70 mph The RHRS provides a total hazard score by summing scores in all the categories but only one option is used for the geologic condition interpolation formulae also are provided for estimating scores in between the identified benchmarks Pierson et al 1990 Pierson and Van Vickle 1993 The system is summarized in Table 3 below Table 3 Summary of FHWA rockfall hazard rating system RHRS adapted from Pierson and Van Vickle 1993 Site Characteristic Slope height ft Roadway width ft Catch ditch effectiveness Geology Case 1 Rock structure Rock joint friction Geology Case 2 Erosion features Erosion rates Rock block size ft and volume cu yd Climate and water Rockfall history Average vehicle risk Decision site distance 25 44 Good catchment Discontinuous joints favorable orientation Rough irregular Few differential erosion features Small difference in erosion rates 1 3 Low to mod precip no freezing no water on slope Few events 25 of the time Adequate 10096 of low design
42. ls unte I have no idea what this is E Seve Changes Delete does zl Fork btt kip What do you think this does Save Changes Delate Debris cleanup Sero Changes Dutitie z zi Jersey berier E Seve Changes Delete a oru mesh tanel Save Changes D alate rz mem ria fielara hi Eire Phan Meletie l xl Biene F Cost Matrix Page p j s lt s o l H Tusiday Jule 18 DoS Idaho Transportation Department i iL Edit Cost Matrix Cost per unit Slope sealing 3l i rt m Enee hr ih Ja Rack dowels untens ni EJ 4 Rock bolt 25 kip THIT Dibris clang Jersey lierrier Jdi Wire mesh vifanchars Cable net ws anchors sqft Filer reintarced shoberete n sw Gabions add 1 row baskets fina Control blasting preshear zh int Tleback wall 150 zq MSE wall sql Ju if Flexible racklall fence liri d d ve Changes l ED MSS LL X 50
43. n and freezing potential and other comments that may include notes on number of traffic accidents due to rock soil debris and on identifying potential repair mitigation methods The overall slope hazard rating score is the sum of ten individual factor scores as shown in Table 5 The total hazard score may range from 30 to 810 The last factor in the table was included at the suggestion of ITD geotechnical personnel in order to account for potential large impact hazards that might be overlooked by focusing only on highway segments that had experienced some rockfall or erosion problems in the past Although this scoring system is intended primarily for cut slopes above the roadway it also can be applied to distress in fill slopes or embankments differential settlements slope instabilities by replacing the ditch effectiveness factor with a shoulder pavement damage severity factor Table 4 Estimating the slope hazard score for catch ditch effectiveness based on experimental rockfall data from field tests in Oregon ditch widths are in feet and represent the 0 60 0 80 and 0 95 quantile values from published cumulative percent retained curves for slightly inclined ditch bottoms Pierson et al 2002 Slope Angle H V 1 1 0 5 1 0 25 1 Vertical Height ft Score 30 3 gt 16 14 10 gt 12 9 12 16 12 14 8 10 10 12 2 9 11 9 11 5 7 8 9 81 lt 9 lt 9 lt 5 lt 8 30 50 3 gt 26 gt 20 gt 12 gt 14 9 19 25 15 20 9 12 12 13 2 14 18 11
44. n of NIATT National Institute for Advanced Transportation Technology ITD Idaho Transportation Department Dr Stan Miller at the University of Idaho If you have any questions please contact the author given below Document Author Andrew Crapuchettes Author Phone 208 699 4292 Author e mail andrew a crapuchettes com Table of Contents Page Installation Instructions llle IRI 2 Database Information 0 0 ccc eee Rs 3 General Information 0 00 cece eee eee eee eens 3 BIov and la VOU sor p AREE ae ORE RE AEG AER RAD ERR ER S 4 Web Application Information 0 0 000 cece eee eee 5 General Information ccce 5 Plow and layout eee Fee 44 Se Rea et we bones dee ERSTE 6 Screen Shots 0 0 cc cece eee erras 7 40 Installation Instructions The HiSIMS web based application uses Microsoft SQL Server and Microsoft IIS ASP all running on a Microsoft Windows server Windows IIS and SQL Server will be assumed to be installed on the server See the HiSIMS CD for installation files HiSIMS web application install The web application part of the system is designed to be stand alone for the most part The prerequisites are listed above Once these are installed follow the steps listed below e Make a folder by the name of HiSIMS under the main wwwroot directory or under the virtual directory in which the web application will reside This was setup this way to ke
45. ned to meet a given state s needs In Idaho work began in 1999 to systematically evaluate highway rockfall hazards and develop a statewide database and management system to deal with these hazards The slope hazard rating system currently in use for Idaho highways is based partially on the FHWA RHRS but also includes elements from the Washington State DOT Unstable Slope Management System which uses less geologic input than the RHRS and much more information tied to economic factors such as cleanup costs detours delays and pavement damage Lowell and Morin 2000 The Idaho rating system requires the field investigator to input basic field observations and measurements some of which are then used for internal computer calculations to provide intermediate scores for various hazard factors Field data can be recorded on paper forms or typed into a database input screen on a laptop computer or PDA personal digital assistant Some of the information is obtained from ITD office files either prior to or after the field assessment Required specific input for the database and for computing a hazard rating is given below S1 ITD District No Example 3 S2 Highway Route No Example US 95 SH 55 S3 Begin MP milepost To the nearest 0 01 mile S4 End MP milepost To the nearest 0 01 mile S5 Side left or right As observed in the increasing milepost direction S6 Geo type rock or soil or both If both indicate which one is dominant S7 Posted s
46. o as large as hundreds of feet for a rock slide or landslide Class of slope material at the site The class of slope material will be designated as soil rock or a combination of both soil and rock For mixed mode sites the type of material deemed most likely to cause problems should be designated Site Dimensions 9 10 11 12 Roadway width measured from edge to edge of the paved surface including shoulders The actual width should be measured and recorded in the field even though HiSIMS uses categories e g 20 ft 20 29 ft and so on Slope angle of the slope hazard site The slope angle can be measured using a handheld inclinometer Brunton compass or it can be visually estimated though this is not recommended This angle should be recorded in degrees it will be used to help evaluate catch ditch effectiveness Slope height of the slope hazard site This is the vertical height of the slope cut slope fill or natural Slope that may contribute to rockfall or slope instabilities at the site If a range finder is used to measure the slope distance or slope height then the vertical height is obtained by multiplying this slope distance by the sine of the slope angle Width of catch ditch is the typical width of the catchment area at the slope hazard site This catchment may be a well defined shallow depression or just a flat area where rockfall debris may collect alongside of the paved roadway Its recorded width should
47. om an ITD systems administrator i Veal ay Gl SC Once you have logged on you will be A aA Sc Si M i iat rans tation Department presented with a menu on the upper left t ZEE that will allow you to navigate your Welcome way around the application The top Pra Depart and AM ae e kang Vna eem YR hare y quere Gel ree to contact us level of this menu contains the five major sections of the application and apm tnter yaar TTD usar ame n will be covered here in overview Peete aoe oar Liser Same Search The first and probably most Mitigation Methods Site Information Passwvard frequently used section of the HiSIMS EC web application is the search capability S This section has two different methods to help you find the slope that you are looking for The first 1s the location driven search which allows you to find a slope site based on its location Figure 1 Main log in page district road mile post in the state The second option is the Slope Characteristic driven search which allows you to find a slope based on criteria such as hazard rating and vehicle risk Both searches will take you to a page for that road slope site Rating Forms The second section allows you to enter new slope sites add new hazard rating forms manage your previous and current hazard rating forms and print out your completed hazard rating forms This section is broken into two different areas Form Management and On line Form The Form M
48. on Washington D C Pierson L A and R Van Vickle August 1993 Rockfall Hazard Rating System Participant s Manual Federal Highway Administration Report FHWA SA 93 057 Federal Highway Administration Washington D C Pierson L A C F Gullixson and R G Chassie Feb 2002 Rockfall Area Catchment Design Guide Oregon DOT Final Report Proj No SPR 3 032 Salem OR Ritchie A M 1963 The Evaluation of Rockfall and its Control Highway Research Record No 17 Highway Research Board Washington DC Wyllie D 1987 Rock Slope Inventory Maintenance Programs FHWA Rockfall Mitigation Seminar 13 Northwest Geotechnical Workshop Portland Oregon 16 Appendix 1 HiSIMS USER MANUAL This document is intended to assist those who will be using the HiSIMS Highway Slope Instability Management System web application to search maintain or calculate cost and needs associated with Idaho highway slopes Andrew Crapuchettes did the development work under the direction of Professor Stan Miller NIATT National Institute for Advanced Transportation Technology and the Information Systems personnel at ITD Idaho Transportation Department If you have any questions please contact the author given below Document Author Andrew Crapuchettes Author Phone 208 699 4292 Author e mail andrew a crapuchettes com Table of Contents Page Application overview sse 2 eee URS CC eras ora e eee pede od bee RETO eee eee 4 BEEN
49. ons during some such events 3 Debris occurs on the roadway frequently or in such a manner that produces a hazardous condition particularly for sites with limited site distance these sites often require immediate attention during or after storms Optional Figure 21 Severity Rating Form This page requires little explanation beyond what is already on the page The only optional fields are Segment Code GPS Data Longitude and GPS Data Latitude the rest are required and the page will not let you submit to the server until they have data You may change the Rated by and Date fields but it is recommended that you leave them as they are when you come to the form Once you have successfully submitted this for to the server the site will be available in the location driven search for any user on the system to access and view 32 Form Management The first item on our list is the Form Manager which will allow us to manage the hazard rating forms that we have in progress or have finished Figure 22 r b th oi 21 LU mi Idaho Transportation Department Form Management This page will allow you to manage the Hazard Rating farms that you have filled im and the omes that you are working on Remove will simply remove the raw from this page it will not remove the form from the server View will take vou to a printable version af the submitted forms and an edita
50. page you will be presented with the Mitigation Cost Estimates window see Figure 14 The Solution drop down box contains a list of the current mitigation methods in the database When you select your preferred method from this box you will either be presented with additional quantity needs or an estimated cost Figure 15 Loo SE Mitigation Cost Estimates Solution Estimated cast Select a Solution 67528 70 Selecta Solution olope scaling Rock dowels untens Enck hal fF kini Figure 15 Slope scaling cost If you select Slope Scaling you will be presented with a cost based on the surface area of the slope and a cost matrix to be covered later If you select one of the options requiring additional information you will be prompted for the information and then you will need to click on the Calculate link to get a value based on those numbers refer to Figure 16 Mitigation Cost Estimates Solution oth and sq ft af cover per dowel Estimated cast o Rack dowels untens Bo NeedQty ail Calculate Figure 16 Rock dowels cost 28 Rating Forms The next item down in the main menu allows you to enter new slope sites and view and edit the hazard rating forms that DetaledHarardRai YOU have already completed or are still completing Hazard Rating Form Form Management is first on the menu but we will start with the On line Form menu option because 1f we don t fill in a fo
51. peed limit mph S8 Estimated sight distance ft S9 Impacted road length ft S10 Roadway width including paved shoulder ft S11 Catch ditch width ft S12 Average daily traffic ADT Available from ITD central database Required categorical rating information includes the following C1 Slope height ft lt 30 30 50 50 70 gt 70 C2 Slope angle H V rock 1 1 1 1 755 1 5 1 25 1 gt 25 1 Soil lt 3 1 3 1 2 1 2 1 1 25 1 gt 1 25 1 C3 Slope ditch condition good runoff some runoff some slope continuous slope soil slope only intercep amp veget intercep amp veget breaks veget nil breaks veget ditch cleanout ditch cleanout ditch cleanout ditch cleanout read rarely every 5 6 years every 2 3 years annually or major events expected to overwhelm ditch C4 Failure frequency 1 3 per year 4 10 per year Often and after Very often signif storms nearly continuous c5 Maintenance Cleanup Minor scrape off Moderate some Major signif Extensive work debris clean ditch loading amp hauling loading amp hauling C6 Traffic Impact Delays Minor some debris Moderate debris Major debris in Extensive debris on shoulder traffic in one lane signif more than one lane across the entire slowed or minor delays 15 min reroute traffic roadway delays 10 min with signif detour major detour In general the four benchmark divisions for these categorical characteristics receive scores of 3 9 2
52. rching sorting and comparisons of rockfall locations and severity ratings This initial survey focused only on rock debris delivered to the roadway Several other sites in some of the ITD operating districts also were noted as having a history or potential of erosional or mudslide debris to be delivered to the roadway Though not included in the original survey these sites should be included in the next round of slope hazard inventories The survey indicated that modern roadway design standards have accomplished significant reductions in the amount of slope debris that reaches the road surface of highway segments recently constructed or realigned but older segments and secondary routes which have a low priority for maintenance or upgrade funds still may be prone to persistent slope hazards Table 1 Summary of rockfall inventory and severity ratings Total Number Number of Sites with Rockfall Severity Ratings ITD District of Rockfall Sites 1 2 3 1 167 116 17 34 2 310 104 136 70 3 125 54 46 25 4 216 120 61 35 5 83 52 25 6 6 86 18 53 15 ALL 987 464 47 338 3496 185 1996 This statewide rockfall severity inventory also provided information on initial prioritization of the worst rockfall sites based on comments from ITD maintenance personnel or on the high hazard potential of certain areas that may not necessarily have a history of significant rockfall cleanup activities Such sites represent those highway locations most worthy of
53. receiving further attention with detailed hazard ratings and subsequent rockfall mitigation efforts if warranted These sites are listed below according to route and mile post mp District 1 SH 3 mp 55 0 73 7 SH 5 mp 10 0 SH 97 mp 70 3 94 8 95 7 96 0 SH 200 mp 41 5 56 1 District 2 US 12 mp 33 45 56 45 76 0 78 8 116 6 120 1 133 8 159 6 168 5 172 4 US 95 mp 198 0 231 2 286 2 SH 7 mp 51 0 SH 11 mp 4 2 SH 13 mp 14 5 19 4 SH 14 mp 7 6 10 1 12 9 16 6 33 0 42 0 District 3 US 95 mp 144 6 173 6 175 1 SH 21 mp 11 1 18 0 73 8 SH 55 mp 67 7 76 5 80 7 91 9 93 5 94 2 150 2 150 6 151 9 District 4 SH 75 mp 155 7 199 2 202 1 203 0 205 1 208 3 213 1 220 8 District 5 US 89 mp 35 8 37 1 SH 34 mp 26 0 SH 36 mp 114 6 District 6 US 26 mp 374 5 389 0 US 93 mp 264 0 273 5 281 6 283 3 319 5 324 5 SH 47 mp 11 6 SH 75 mp 224 0 DEVELOPMENT OF IDAHO SLOPE HAZARD RATING SYSTEM One initial goal of this project was to investigate available rockfall hazard rating systems and adapt their applicable components to build a customized hazard rating system for Idaho highways We relied heavily on previous work done by Federal Highways and by the transportation departments in Oregon Arizona and Washington As our field work progressed and we received input from ITD personnel the Idaho rating system gradually evolved into a unique rating system that included other roadside hazards e g landslides debris flows
54. riven Search allows the user to search for slopes by hazard rating type district ADT Average Daily Traffic and or AVR Average Vehicle Risk The searches can be saved for each user and the data is saved to the user s computer in the form of a cookie by JavaScript When the user presses the search button JavaScript makes a SQL query string from the data that the user entered and passes that on to the Search Results page Slope Information Page is obtained by several paths When a user specifies either of the search methods above and selects an individual slope this page 1s displayed In this page the user can view the hazard rating form add a history based comment or do a cost estimate for the slope only if there is a hazard rating form for the slope Form Management Page is unique for each user and shows the hazard rating forms that the user has submitted or just saved before completion The data here is saved in an XML file on the server If the user selects to view a submitted slope a printable version of the form is displayed If the user selects an un submitted form the most recent hazard rating form will be displayed with all of the data saved from the last time it was edited The user also can delete a form that is un submitted or remove a form from this page that has been submitted Hazard Form Page is where the user enters all of the hazard rating information for a slope ASP fills some of the option boxes with data J
55. rm first then we can t manage it The On line Form option is made up of only one main page that allows you to enter all of the data upload the pictures and calculate the hazard totals Figure 17 i i idaho Transportation Department Road cut Hazard Evaluation Sheet z Rated by ite men Date 26 2003 umits English Hoad Information District Selecta Distinct Posted Speed Limit Setect PSL Route Selects Route Estimated Sight Distance fSelect in Feet Begin MP 1 Impacted Read Length Seloctin Fent End MP Roadway Width Selectin Feeq Segment code Side Selecta Side GPS Data uong feat Class iSelect a Class v Repair Information ries E Select Ortena tme cpa Select Criteria v Slope Information Slope Helght EE Crena Ditch Information EH Slope Anglo Select Criteria Historic Information Lookup acd All in fields Average Dail ___Pateatlal forievient mot ebeerVed ruere Failure frequency Seleci Ciena in recent years Include Additional Data Additional Comments Accidents In last 5 yrs Other Comments All unies will be conwarted bark to english before data is sont ta the databace Figure 17 On line hazard rating form 29 The form is fairly self explanatory Some of the fields start out blank because they are filled in by the selection in another
56. sed on the longest extend of the highway slope that has fairly consistent characteristics slope height slope angle catch ditch width site distance etc Very rarely will a site extend much beyond a mile or so without an important site characteristic changing significantly Rather most sites likely will be less than 0 3 mile As ITD personnel become familiar with HiSIMS they will develop a uniform strategy for recognizing the road span of a distinctive highway slope hazard site Table 5 Highway slope hazard rating system for Idaho Example SCORES 3 9 27 81 Entry Roadway Width ft 40 30 40 20 29 20 9 Slope and Catch Ditch Rock Ditch Effectiveness Obtain scores from Table 3 27 OR Soil Slope Ditch Failure frequency Impacted road length ft Maintenance Cleanup Traffic Impact Delays Average Daily Traffic Average Vehicle Risk AVR Percent Decision Sight Distance PDSD good runoff intercep amp veget ditch cleanout reqd rarely 1 3 per year lt 50 Minor scrape off debris clean ditch Minor some debris on shoulder traffic slowed or minor delays lt 10 min lt 200 lt 25 gt 100 some runoff intercep amp veget ditch cleanout every 5 6 years 4 10 per year 50 200 Moderate some loading amp hauling Moderate debris in one lane signif delays gt 15 min 200 1000 25 50 80 99 some slope breaks veget ditch cleanou
57. shrink accordingly If you move your mouse over the map each district will highlight as your mouse passes it If you click on any of the six districts the map will change and you will be presented with an enlarged map of only that district Then to get back out 20 gt M to the map of the entire state you need to click on E HET oeur d Alene magnifying glass on the upper left shown in 3 You may also move to other adjacent districts v this zoomed in map by clicking on them in the Once you have used the map to refine your search one district you will notice that the list of highway on the right has changed in content and has significantly decreased in size This list will automatically change as you refine your search The next level of refinement that can be added to search is to specify only one route either in that or in the entire state Again 1f you have a district selected and add this level of refinement both will applied to your list If you still have the entire showing on the map then specify one route to on it will list all of the road cuts for that route in entire state It is also important to note that the list routes will update based on the district that you don t select on the map By Route and MP Route v between and Results for SH 162 after MP 0 before MP 1000 in District 2 Route Beg MP BH 152 4 4 SH 162 SH 152 SH 162 SH 162 SH 162 Mile Post Figure 4 List
58. submitbed forms For questions see the Help sedion Remove View Edit Status Date Created Time Created 3 Submitted 6 24 2002 11 49 E Submitted 7 29 2002 21 38 E 7 30 2002 11 38 9 2 2002 9 13 eg 9 20 2002 9 47 46 Hazard Form hike __ ml NJ Roadcut Hazard Evaluation Sheet Rated by Andrew Date 7 26 2003 imnits English Road information District Selecta Disc Posted Speed Limit Select PSL Route iSelect Rowe x Estimated Sight Distance Selectin Feet Begin MP 1 Impacted Road Length Selectin Fent End MP Roadway Width Seiectin Fee Segment Code Side Selecta Side GPS Data weg aal Class fSelecia Class Repair Information ricis E Select Critens Lilie dain r Select Criteria Slope Information Slope Height Select Criteria v Bitch Information Slope Angle Select Criteri Historic Information Lookup acd fill in fields an Poteatlal for eventinot ebserved aacr Crono Failure frequency Saec Crins x Include Additional Data Additional Comments Accidents in last Srs Other Comments P All unies will be conwarted back to english before data is sont ta the databace Printable Form The format may be changed in later upgrades o que 0 o qa soe WE Lr ew c y Qu 0 f j 1 aa I uv l 3 Roadcut
59. t every 2 3 years Often and after signif storms 200 500 Major signif loading amp hauling Major debris in more than one lane reroute traffic with signif detour 1000 3000 50 75 60 79 continuous slope nil breaks veget ditch cleanout annually or major events expected to overwhelm ditch Very often nearly continuous 500 Extensive work Extensive debris across the entire roadway major detour gt 3000 gt 75 lt 60 27 27 81 12 Potential for Major Extreme Rockfall Landslide Debris Flow or Erosion Event not observed in recent years Nil Some potential Moderate potential High potential 9 EXAMPLE TOTAL 210 Calculated based on user specified input information such as posted speed limit 2 Segment code for the slope hazard site This is the ITD designated code for highway segments which is a unique identifier that can be used to differentiate between route sections that may have overlapping or duplicate mile post readings In most cases this information is not required and is left to the discretion of the investigator GPS data for the slope hazard site If the latitude and longitude of the site have been obtained by a GPS unit as recorded at the approximate center of the slope site then this information can be added to the data base We encourage ITD personnel to begin logging this GPS information into the data base for slope sites as soon as practi
60. tabase item The more conventional way for you to enter ae historic data on a slope site would be to find the site BEEN that you are looking for with one of the two search methods go to the Slope Data page and click on the add new data link in the Historic Data box to the lower right Figure 24 Figure 24 Add historic data 34 i hs be liane Transportation Department Slope History Add historical data to a slope Route SH 64 Begining MP 24 5 Ending MP 26 9 Date 5 5 2003 Information Addto Slope Ta add histencal data bo an existing slope site or to view and interegate existing slope sites please see the Search page Figure 25 Add historic data to existing site When you click on the add new data link for the slope site we were looking at earlier you will be presented with the screen shown in Figure 25 Here the route and milepost data are already filled in The data is still editable if you need to add historic data retroactively Once you have the date set type in the main text box any descriptive data that you deem useful Once you have written the text in the box that you want attached to the site with the date shown above press the Add to Slope button This will send the data to the database and add it to the site Then you will be taken back to the Slope Data page You will now notice that in the Historic Data box that was previously blank the data that you had
61. to establish and implement password levels for ITD users across the state Neither of these capabilities is now available in the HiSIMS test site on the ITD server RECOMMENDATIONS FOR FUTURE IMPROVEMENTS TO HiSIMS Although a number of improvements were added to HiSIMS after receiving ITD feedback during the May 2003 workshops around the state several Stage 2 upgrades could not be incorporated into the current version of HiSIMS due to project time and budget constraints These proposed second generation upgrades are summarized below and an estimate of programmer days for each one is provided 1 Flag a site to remove it from being searchable This will require a re structuring of some of the links in the data base meaning that additional planning and development will be needed for HiSIMS 4 6 programmer days Remove or edit historical comments Such editorial capability of the data base fields will require more sophisticated levels of data management within HiSIMS 6 8 programmer days Add a new comment field for exclusive use for maintenance notes This will require minor formatting and some substantial data link enhancements within HiSIMS the 15 capability to edit these comments will demand significant re building efforts 2 6 programmer days 4 Capability to combine mitigation methods To accomplish this within HiSIMS a much more advanced level of handling the mitigation cost matrix and editor will be needed
62. verage Vehicle Risk score is equal to an details of your search criteria sentence into a cookie and place name you have chosen in the drop _Seerch down box at the top of the search Save this search as AVR 81 Or 600 cave area Figure 11 Saving a search criteria sentence the Saved Searches AVR B8 Or 600 AVABT Orii really see this working you will need to save an additional set of criteria Sr Ua UMEN with a different name After you have done that you can switch back and forth between the two by selecting them in the drop down box mentioned earlier see Figure 12 Figure 12 Saved searches 26 Slope Data Page When you search for a slope using either of the two methods listed above you are only given sparse detail about the slope by the page that returns the results To look at more detail and to add historic detail you will need to go to the Slope Data Page Figure 13 This page cannot be entered via the main menu but can only be seen when referring to a specific slope from a search You can enter the page when you conduct a location search by clicking on the route number and when you conduct a characteristic driven search by clicking on the Slope ID link Wn Ba a Ifaho Transportation Department User Name Andrew Sign Off E lape Seventy Rating 3 District 2 Route SH 64 Beg MP 24 5 End MP 26 9 Side Left Detailed Hazard Rating Form s Historic Data add new data

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