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SITES SOFTWARE APPLICATION SEMINAR

SERIES EXAMPLE PROBLEM. SITES SOFTWARE APPLICATION SEMINAR. __________________________ SITES 2000.5 INTEGRATED DEVELOPMENT ENVIRONMENT for WATER RESOURCE SITE ANALYSIS. TRAINING OBJECTIVES. Working knowledge of SITES software for a simple series routing

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SITES SOFTWARE APPLICATION SEMINAR

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  1. SERIES EXAMPLE PROBLEM SITES SOFTWARE APPLICATION SEMINAR __________________________ SITES 2000.5 INTEGRATED DEVELOPMENT ENVIRONMENT for WATER RESOURCE SITE ANALYSIS

  2. TRAINING OBJECTIVES • Working knowledge of SITES software for a simple series routing • Basic understanding of vegetated earth auxiliary spillway erosion technology • Provide resources needed for software application

  3. SITES IN SERIES

  4. Schematic or model of series routing for the watershed shown in the previous slide. Lower or Design Site

  5. SUBWATERSHED STRUCTURE REACH NODE or JUNCTION REACH STRUCTURE

  6. TOOL BAR BUTTONS FOR FIRST SITE STARTING SCHEMATIC

  7. NEXT ADDTHE REACH ABOVE THE LOWER SITE

  8. NOW ADD UPPER SITE The upper site is considered built or in place for the design of the lower site.

  9. (designed before start of series routing) - Upper Site Sites in Series Example Problem For the upper site use TR-60 example Reach 3500’ - with cross-section #200 Lower Site to be designed

  10. SITES PROBLEM TR-60 - SERIES REVISED APRIL, 2000 GIVEN: This data is to be used for upper site Drainage Area = 2.21 sq. mi. Hazard Class = b RCN = 78 Tc = 1.46 hrs Quick Return Flow = 6.21 csm Climatic Area = Humid - Subhumid Permanent Pool @ 113.0 ac. ft. Crest of principal spillway = 113.0 ac. ft. Volume of sediment between principal and aux. spw. = 23.0 ac. Ft. Valley Floor Elevation - 434

  11. Structure Data Elev. (ft.) Surface Area (Ac.) 430 0 435 1 440 4 445 17 450 44 460 98 470 173

  12. Climatic Index = 1.49 Rainfall: ASH & FBH - 24 hr. storms 1 day = 7.2” 10 day = 13.4” ASH = 8.05” FBH = 14.75” 100-yr, 10-day = 13.4”

  13. Principal Spillway Data: (Single Stage Riser Round) Number of Conduits = 1 Length of Conduit = 210.0’ Diameter of Conduit = 30” Conduit “n” = 0.012 Ke = 1.0 Tailwater elevation = 437 ft. Riser weir length = 15 ft.

  14. Auxiliary Spillway Data: Station at DS of Crest = 700 ft. Inlet length of the auxiliary spillway is about 380 to 400 ft. Inlet profile data (x,y) (distance, drop): 100’, 0’; 120’, 2.0’; 380’, 5’ Fixed Point = sta. 100 and elev. 420

  15. Bottom Width: 50’; 75’; 100’, Spillway sideslope = 2:1 Rather than input an Exit channel Slope - tie the slope from the crest to the constructed outlet channel to fixed point at sta 930 and elev 441

  16. Sta. 700 380’ 120’ 100’ 2’ 5’ Fixed Point (100, 420) 456.0 Fixed Point (930, 441) Template Example

  17. SPILLWAY DATA 100’ SIDE SLOPES ARE 2:1

  18. Centerline Dam Valley Profile Data: Station(ft.)/Elev. (ft.) 0/473; 100/470.8; 200/462.2; 300/447.5; 322/440.3; 359/438.8; 369/438.8; 387/419.2, 395/419; 407/434.8; 500/434.5, 700/434.8; 800/434.5; 873/434.9, 900/438.9; 1000/446.3; 1050/454.3; 1100/464.3; 1150/465.7; 1200/466.4 Assume 0.5’ of stripping

  19. Embankment Data: Top Width = 19’ Upstream side slope = 3:1 Downstream side slope = 3:1 Wave Berm Width = 20’ No Stability Berms Crown = 0.5’

  20. Spillway Geology and Vegetation Data: Material Clay (CL) PI = 11 D75 = 0.0015 inches Percent Clay = 18% Dry Density = 103 pcf Headcut Erodability Index = 0.07 Inlet channel Manning “n” = 0.04 or Vegetative Retardance Curve Index = 5.6

  21. Exit channel Manning “n” = 0.04 or Vegetative Retardance Curve Index = 5.6 Assume 1 foot of rooting depth in spillway One foot of topsoil will be installed in the constructed channel The representative soil particle size topsoil D75 = 0.01” Cover Factor (good-fair) bromegrass = 0.75 - 0.50 Maintenance Code (assume good in constructed ) = 1 Maintenance Code (assume minor irregularities in natural cover ) = 2

  22. Coordinates of top of material: Sta. (ft.)/ Elev. (ft.) 100/420; 310/451; 410/455; 500/456; 700/460; 750/458; 930/441; 960/435; 1000/426

  23. FIND: The auxiliary spillway elevation and top of dam for the lower site from the information given. Also what is the integrity distance for the spillway bottom widths analyzed? Then assume you have a minor irregularity in the constructed exit channel.

  24. Example 2 Use Example 1 as a start Change the bottom width to velocity with Va = 2.69, 2.40, and 2.16 fps First assume you have a good maintenance condition in the constructed exit channel. Then assume you have a minor discontinuity in the constructed exit channel. Compare the bottom widths to those of example 1.

  25. Example 2a Use Example 1 as a start Change the bottom width to stress with allowable stress = 0.017, 0.014, and 0.011 psf First assume you have a good maintenance condition in the constructed exit channel. Then assume you have a minor discontinuity in the constructed exit channel. Compare the bottom widths to those of example 1. Use the stresses from example 1 with a minor discontinuity in the exit channel. Compare the bottom widths to those of example 1.

  26. Example 3 Use handout No. 1 to enter coordinates of geology for an existing spillway. Use Example 1 as a start. This is an example of nodes and intersection points.

  27. Example 4 This would be a case where you would be evaluating an existing spillway say after a storm and the data of the spillway is known but the geology may have been done after the spillway was built. Use handout No. 1 to enter coordinates of geology for an existing spillway. Use Example 1 as a start. This is an example of how to enter a pocket of material.

  28. Example 5 Here you have existing geology that you want to overlay the designed spillway over. Use Example 1 as a start. Then enter spillway as an assprfl. 100/420 310/451 580/454 600/456 700/456 930/441 960/435 1000/426

  29. Handout No. 1

  30. Handout No. 2

  31. END OF UPSTREAM SITE START REACH INFORMATION AND LOWER SITE DESIGN

  32. REACH ROUTING For reach routing use a reach length of 3500’ and the cross section or rating information as defined on the next slide.

  33. Xsection number 200 ELEV Q A 415.5 0.0 0.0 416.0 5.0 5.00 416.5 18.0 10.00 417.0 37.0 16.50 417.5 63.0 24.00 418.0 96.0 32.50 418.4 128.0 40.00 418.8 165.0 48.20 419.0 187.0 52.50 419.4 232.0 61.60 ELEV Q A 419.6 270.0 105.00 419.8 310.0 140.00 420.0 370.0 180.00 420.2 440.0 240.00 420.6 680.0 400.00 421.0 975.0 625.00 421.4 1240. 810.00 421.8 1520. 1030.00 422.0 1670. 1140.00 422.2 1820 1250.00

  34. SERIES EXAMPLE PROBLEM Downstream Site

  35. For the lower site: DA – 3.52 sq. mi. Tc – 2.21 hrs. RCN – 71 Class “b” Quick return flow is 6.21 csm Perm. Pool –elevation in feet - 417.0 PS crest – elevation in feet - 417.0 Riser Weir length – 22.33’ 24 – 2(10/12) = 22.333

  36. Vol. of sediment between the PS crest and the auxiliary spillway – 36.6 ac.-Ft. ----> about elev. 417.29 Valley Floor elevation in feet – 410.1 Low point on the centerline of the dam in feet– 403.0

  37. Structure Data ELEV. ACRES 403 0 404 7.25 405 14.5 406 20.3 408 39.0 410 54.3 412 73.0 414 92.5 415 102.6 ELEV. ACRES 416 112.5 418 132.0 420 151.6 422 170 424 189.0 425 199.8 426 209.4 428 228.5 430 247.6

  38. Climatic index – 1.49 Rainfall Data --- ASH & FB – 24 hr. storms 1day 7.2” 10day 13.4” ASH 8.05” FB 14.75” 100yr 10day 13.4” Pipe Data Number of conduits – 1 Length of conduit – 220’ Diameter of conduit – 48” Conduit – concrete – “n” – 0.012 Ke – 1.0 HGL or Tailwater elevation at PS outlet – 396’

  39. Auxiliary Spillway data Station at downstream crest (tie-in station) – 10050 The inlet length of the spillway is about 200 – 250’. Use a 200’ wide spillway with a floating template. Use these points for the inlet template. 0/0 50/0 250/2

  40. 250’ 50’ ( 0, 0 ) 2’ ( 50, 0 ) 10050 ( 250, 2 ) SPILLWAY INLET

  41. Material coordinates(STA/ELEV) ASCOORD 1 TOP CL-MH 9800/419.0 9850/423.5 9950/426.5 10000/427.5 10100/427.0 10150/424.0 10175/419.0 10210/410.0 ASCOORD 2 CL 9800/419.0 9950/424.5 10000/425.5 10050/425.8 10100/422.0 10210/410.0 ASMATERIAL # PI D75 %C d Kh 1 39 0.075 30 105 0.10 2 14 0.15 13 112 0.05

  42. SPILLWAY OUTLET FLOATING CREST DS CREST 10050 (10210, 410.0) FIXED PT. FIXED POINT FOR SPILLWAY OUTLET 10210/410.0

  43. SPILLWAY DATA BTMWIDTH FEET 200 200’ SIDE SLOPES ARE 3:1

  44. Spillway Surface Data Cf Ci MC RD D75 INLET .8 5.6 1 1 .01 CREST .85 5.6 1 1 .01 OUTLET .7 7.0 1 2 .01

  45. END OF EXAMPLE PART #1

  46. Example No. 2 for Sites in Series • Increase crest length so it does not breach.

  47. END OF EXAMPLE PART #2

  48. Example No. 3 for Sites in Series • Fill to valley floor.

  49. END OF EXAMPLE PART #3

  50. Example No. 4 for Sites in Series • Put better vegetation and maintenance on the spillway.

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