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Home My WebLink About06-07 Comments (2)TABLE OF CONTENTS Project Vicinity Map 1 S.CS. Generalized Soil Map 2 FEVLA Flood Hazard Map 3 Narrative Scope of Work and Basis of Computations 1 Conclusions and Recommendations 1 Basis of Design 1 Appendices A Culvert Computations 1R -55 Computer Model A -4 HY8 Calculations A -8 13 Drainage Area Map 1 1 1 11 1 1' 1 1� 1 1 1 1 Patton Harris Rust St Associates Engineers. Surveyors. Planners Landscape Architects. P RA 117 East Piccadilly Street Winchester. VA 22601 5002 T 540.667.2139 F 540.665.0493 PROJECT VICINTY MAP BROOKE ROAD PHASE 2 JOHNSON DEVELOPMENT ASSOCIATES, INC. BROOKE ROAD FREDERICK COUNTY, VIRGINIA SCALE: APPROX. 1" 1000' DATE: 01/16/08 DRAWN BY: KLM PROJECT 15761 -1 -0 i 1 SOILS CHART MAP UNIT SYMBOL MAP UNIT NAME 14B 14C 16B I 6C 17C 17E 29 32B 33C 35 FREDERICK— POPLIMENTO LOAMS 2 TO 7% SLOPES FREDERICK POPUMENTO LOAMS 7 TO 15% SLOPES FREDERICK POPUMENTO LOAMS VERY ROCKY, 2 TO 7% SLOPES FREDERICK POPLIMENTO LOAMS VERY ROCKY, 7 TO 15% SLOPES FREDERICK— POPLIMENTO ROCK OUTCROP COMPLEX VERY ROCKY, 2 TO 15% SLOPES FREDERICK POPUMENTO ROCK OUTCROP COMPLEX VERY ROCKY, 15 TO 4510 SLOPES MASSNJETTA LOAM OAKLET SILT LOAM 2 TO 7% PERCENT SLOPES OPEOUON— CHILHOWIE SILTY CLAYS VERY ROCKY, 3 TO 1510 PERCENT SLOPES PAGEBROOK SILTY CLAY LOAM Patton Harris Rust 8 Associates,pc Engineers. Surveyors. Planners. Landscape Architects. -nom 117 Eu,t Piccadilly Street Winchester. VA 22601 -5002 T 540.667.2139 F 540665.0493 SOILS MAP BROOKE ROAD PHASE 2 JOHNSON DEVELOPMENT ASSOCIATES. INC. BROOKE ROAD FREDERICK COUNTY, VIRGINIA SCALE: APPROX. 1" 1000' DATE: 01/16/08 DRAWN BY: KLM PROJECT 15761 -1 -0 1 It A' TOAD LIMIT OF DETAILED STUDY ZONE B ZONE A10 7/17/78 PRIVATE ROAD 699 ZONE B e FLOOD INSURANCE RA COMMUNITY PANEL NO 510063 01058 510063 0115B ZONE A3 7 /17/78 Il I, MAP IBERS Patton Harris Rust Associates,pc Engineers. Surveyors. Plonne's. Landscape Architects. P RA 117 Eat Picmtlllly Street Wncte,le. VA 22601 -5002 T 540.667.2139 F 540.965 0497 FEMA FLOODPLAIN MAP BROOKE ROAD PHASE 2 JOHNSON DEVELOPMENT ASSOCIATES, INC. BROOKE ROAD FREDERICK COUNTY, VIRGINIA SCALE: APPROX. 1" 1000' DATE: 01/16/08 DRAWN BY: KLM PROJECT 15761 -1 -0 1 1 1 1 1� Scope of Work: The purpose of this report is to present the results of computations and to design storm water conveyance structures required to extend the existing box culvert Park Center Drive crossing for Brooke Road Phase 2 site. The project is located in the Stonewall District, Tax Map 54, Frederick County, Virginia. The facilities described in this report were designed to comply with the requirements of Frederick County, Virginia and the Virginia Department of Transportation. Basis of Computations: This report uses the TR -55 and the Snyder Method Procedure as outlined in the Virginia Department of Transportation Drainage Manual to compute peak runoff rates from the drainage areas. The HY8 Culvert Analysis program was then used to automate the culvert design methods described in FHWA publications Highway Hydrology, Hydraulic Design Series No. 2 (HDS -2); Hydraulic Design of Highway Culverts, Hydraulic Design Series No. 5 (HDS -5); and Hydraulic Design of Energy Dissipators for Culverts and Channels and Hydraulic Engineering Circular No. 14 (HEC -14). Conclusions and Recommendation: The design of the storm drainage facilities for this project was influenced by the existing topography, existing land uses and cover conditions and drainage patterns. We offer the following conclusions and recommendations for the storm water conveyance structures for this project: The existing three (3) 9.5' x 4' box culverts under Park Center Drive are adequate to handle the peak flows from the 10 year and 25 year storm events without over topping the road. The box culverts will need to be extended approximately twelve (12) feet to accommodate the new access roadway. Basis of Design: NARRATIVE This project site lies on the south side of Route 37 and the west side of U.S. Route 81 in the Fort Collier Industrial Park and more specifically at the end of the existing Brooke Road Phase 1 and Park Center Drive. Runoff generally flows eastward towards U.S.Route 81 and into the existing Redbud Run. The Soil Survey of Frederick County indicates that the soil on the site is predominately Frederick Poplimento loams (Hydrogeologic Soil Group B). These soils have moderate infiltration rates when thoroughly wetted and consist of moderately deep to deep, moderately well to well drained soils with moderately fine to moderately coarse textures. See page 2 for soils map. Revised August 16, 2008 Area RCN Tc Area 2 -Year 5 -Year 10 -Year 25 -Year 50 -year 100 -year 2 88 0.87 245 271cfs 406cfs 504cfs 617cfs 761cfs 833cfs 3 88 0.87 286 316cfs 474cfs 588cfs 720cfs 888cfs 972cfs 1� 1! 1 1 1 1 1 1 1 1 1 1 1� 1 1 i 1 Peak Runoff Computations were computed for the required storm events using SCS TR -55 and the Snyder Method. The size of the drainage areas were delineated and are shown on the included drainage area map. A =off coefficient was computed assuming an industrial land use and a time of concentration was computed. See attached calculations and Appendices for Drainage Area 1 using the Snyder Method. The storm drainage facilities were analyzed and designed using HY8 and inputting the site data, culvert information and peak runoff discharges, All proposed culverts were designed to safely pass the 10 year storm event without overtopping the road surface. All calculations are included. Revised August 16, 2008 APPENDICES A. CULVERT COMPUTATIONS u]a >ori NN71-1in v) z SITE DATA CULVERT SHAPE, MATERIAL, INLET INLET ELEV. (ft) 669.53 669.69 669.72 OUTLET ELEV (ft) 669.52 669.01 669.22 CULVERT LENGTH (ft) 58.90 62.50 66.20 BARRELS SHAPE MATERIAL 1 RCB 1 RCB 1 RCB SPAN (ft) 9.50 9.50 9.50 RISE (ft) 4.00 4.00 4.00 MANNING n .012 .012 .012 INLET TYPE CONVENTIONAL CONVENTIONAL CONVENTIONAL CURRENT DATE: 06 -24 -2008 JRRENT TIME: 14:57:08 1 1 1 1 1 SUMMARY OF CULVERT FLOWS (cfs) FILE: FTBOX DATE: 06 -24 -2008 ELEV (ft) TOTAL 1 2 3 4 5 6 ROADWAY ITR I 671.53 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00 0 671.61 77.0 34.3 12.7 0.1 0.0 0.0 0.0 0.00 11 671.64 154.0 41.1 78.6 17.4 0.0 0.0 0.0 0.00 14 I 671.78 231.0 61.3 86.8 84.7 0.0 0.0 0.0 0.00 6 672.12 308.0 95.1 107.7 105.3 0.0 0.0 0.0 0.00 3 672.47 385.0 122.9 132.0 129.4 0.0 0.0 0.0 0.00 2 I 672.84 673.18 462.0 148.3 158.3 155.5 0.0 0.0 0.0 0.00 3 539.0 172.2 184.2 181.4 0.0 0.0 0.0 0.00 2 673.53 616.0 197.3 210.1 207.4 0.0 0.0 0.0 0.00 2 673.69 651.5 209.3 222.1 219.4 0.0 0.0 0.0 0.00 2 I 674.22 770.0 251.8 261.0 258.5 0.0 0.0 0.0 0.00 2 676.50 1191.8 402.4 395.6 393.8 0.0 0.0 0.0 OVERTOPPING 1 1 1 1 1 HEAD HEAD TOTAL FLOW FLOW ELEV (ft) ERROR (ft) FLOW (cfs) ERROR (cfs) ERROR 671.53 0.000 0.00 0.00 0.00 671.61 0.000 77.00 29.98 38.94 671.64 0.000 154.00 16.90 10.97 671.78 0.003 231.00 -1.81 -0.78 672.12 0.001 308.00 -0.17 -0.06 672.47 -0.003 385.00 0.66 0.17 672.84 0.000 462.00 -0.07 -0.02 673.18 -0.005 539.00 1.20 0.22 673.53 -0.006 616.00 1.26 0.20 673.69 -0.003 651.50 0.78 0.12 674.22 0.006 770.00 -1.27 -0.16 1 FHWA CULVERT ANALYSIS HY -8, VERSION 6.1 1 <1> TOLERANCE (ft) 0.010 <2> TOLERANCE 1.000 1 FILE DATE: 06 -24 -2008 FILE NAME: FTBOX SUMMARY OF ITERATIVE SOLUTION ERRORS FILE: FTBOX DATE: 06 -24 -2008 l "CURRENT DATE: 06 -24 -2008 CURRENT TIME: 14:57:08 1 PERFORMANCE CURVE FOR CULVERT 1 1( 9.50 (ft) BY DIS- HEAD- INLET OUTLET 1 I 1 CHARGE WATER CONTROL CONTROL FLOW NORMAL FLOW ELEV. DEPTH DEPTH TYPE DEPTH (cfs) (ft) (ft) (ft) <F4> (ft) 0.00 34.25 41.07 I 61.29 95.10 122.91 148.33 172.19 197.29 209.26 251.75 1 ,I SITE DATA CULVERT INVERT INLET STATION 0.00 ft INLET ELEVATION 669.53 ft OUTLET STATION 58.90 ft OUTLET ELEVATION 669.52 ft NUMBER OF BARRELS 1 SLOPE (V /H) 0.0002 1 CULVERT LENGTH ALONG SLOPE 58.90 ft BARREL SHAPE BOX BARREL SPAN 9.50 ft BARREL RISE 4.00 ft 11 1 1 671.53 671.61 671.64 671.77 672.11 672.47 672.84 673.18 673.53 673.69 674.22 0.00 2.00 0 -NF 0.00 1.14 2.08 3 -Mlt 1.74 1.28 2.11 3 -Mlt 1.97 1.67 2.24 3 -M2t 2.60 2.25 2.58 3 -M2t 3.55 2.68 2.94 3 -M2t 4.00 3.04 3.31 3 -M2t 4.00 3.36 3.65 2 -M2c 4.00 3.69 4.00 2 -M2c 4.00 3.84 4.16 2 -M2c 4.00 4.42 4.69 2 -M2c 4.00 CULVERT DATA SUMMARY BARREL MATERIAL BARREL MANNING'S n INLET TYPE INLET EDGE AND WALL INLET DEPRESSION CRIT. OUTLET TW DEPTH DEPTH DEPTH (ft) (ft) (ft) 0.00 0.74 0.84 1.09 1.46 1.74 1.97 2.17 2.38 2.48 2.80 0.00 2.01 2.01 2.01 2.01 2.01 2.01 2.17 2.38 2.48 2.80 CONCRETE 0.012 CONVENTIONAL SQUARE EDGE (30 -75 DEG. FLARE) NONE 4.00 (ft)) RCB 2.01 2.01 2.01 2.01 2.01 2.01 2.01 2.01 2.01 2.01 2.01 2 FILE DATE: 06 -24 -2008 FILE NAME: FTBOX OUTLET TW VEL. VEL. (fps) (fps) 0.00 0.00 1.79 0.00 2.15 0.00 3.21 0.00 4.98 0.00 6.44 0.00 7.77 0.00 8.34 0.00 8.73 0.00 8.90 0.00 9.46 0.00 El. inlet face invert 669.53 ft El. outlet invert 669.52 ft El. inlet throat invert 0.00 ft El. inlet crest 0.00 ft 1 1 1 CURRENT DATE: 06 -24 -2008 CURRENT TIME: 14:57:08 PERFORMANCE CURVE FOR CULVERT 2 1( 9.50 (ft) BY DIS- HEAD- INLET OUTLET CHARGE WATER CONTROL CONTROL FLOW NORMAL FLOW ELEV. DEPTH DEPTH TYPE DEPTH (cfs) (ft) (ft) (ft) <F4> (ft) 1 0.00 671.53 0.00 1.84 0 -NF 0.00 12.71 671.62 0.58 1.93 3 -Mlt 0.20 I I 671.65 1.96 1.96 1 -32n 0.81 1 86.85 671.79 2.10 2.10 1 -32n 0.86 107.72 672.12 2.43 2.43 1 -92n 0.99 131.99 672.48 2.79 2.79 1 -S2n 1.13 11 158.25 672.84 3.15 3.15 1 -82n 1.28 184.18 673.18 3.49 3.49 1 -82n 1.41 210.10 673.52 3.83 3.83 1 -S2n 1.54 I 222.11 673.68 3.99 3.99 1 -S2n 1.60 261.05 674.22 4.53 4.53 5 -S2n 1.78 0.00 0.38 1.29 1.38 1.59 1.82 2.05 2.27 2.48 2.58 2.87 El. inlet face invert 669.69 ft El. outlet invert 669.01 ft El. inlet throat invert 0.00 ft El. inlet crest 0.00 ft 1 SITE DATA CULVERT INVERT INLET STATION 0.00 ft 1 1 1� 1 1 1' 1 1!! INLET ELEVATION OUTLET STATION OUTLET ELEVATION NUMBER OF BARRELS SLOPE (V /H) CULVERT LENGTH ALONG SLOPE CULVERT DATA SUMMARY BARREL SHAPE BARREL SPAN BARREL RISE BARREL MATERIAL BARREL MANNING'S n INLET TYPE INLET EDGE AND WALL INLET DEPRESSION CRIT. OUTLET TW OUTLET TW DEPTH DEPTH DEPTH VEL. VEL. (ft) (ft) (ft) (fps) (fps) 669.69 ft 62.50 ft 669.01 ft 1 0.0109 62.50 ft 0.00 2.52 0.89 0.96 1.13 1.31 1.49 1.67 1.85 1.93 2.17 BOX 9.50 ft 4.00 ft CONCRETE 0.012 CONVENTIONAL SQUARE EDGE (30 -75 DEG. FLARE) NONE 3 FILE DATE: 06 -24 -2008 FILE NAME: FTBOX 4.00 (ft)) RCB 2.52 0.00 2.52 0.53 2.52 9.31 2.52 9.55 2.52 10.04 2.52 10.60 2.52 11.15 2.52 11.59 2.52 11.94 2.52 12.14 2.52 12.67 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1 "CURRENT DATE: 06 -24 -2008 CURRENT TIME: 14:57:08 1 1 PERFORMANCE CURVE FOR CULVERT 3 1( 9.50 (ft) BY 4.00 (ft)) ROB 1 1 0.00 0.07 1 17.44 84.67 105.34 129.44 II 155.49 181.43 207.35 I 219.35 258.47 1 SITE DATA CULVERT INVERT INLET STATION 0.00 ft INLET ELEVATION 669.72 ft OUTLET STATION 66.20 ft 1 OUTLET ELEVATION 669.22 ft NUMBER OF BARRELS 1 SLOPE (V /H) 0.0076 1I CULVERT LENGTH ALONG SLOPE 66.20 ft 1 1 1 1 1 1� 1 DIS- HEAD- INLET OUTLET CHARGE WATER CONTROL CONTROL FLOW NORMAL FLOW ELEV. DEPTH DEPTH TYPE DEPTH (cfs) (ft) (ft) (ft) <F4> (ft) 671.53 671.63 671.65 671.78 672.12 672.48 672.84 673.18 673.52 673.68 674.22 El. inlet face invert El. inlet throat invert CULVERT DATA SUMMARY BARREL SHAPE BARREL SPAN BARREL RISE BARREL MATERIAL BARREL MANNING'S n INLET TYPE INLET EDGE AND WALL INLET DEPRESSION 0.00 1.81 0 -NF 0.00 0.21 1.91 3 -Mlt 0.00 0.72 1.93 3 -Mlt 0.33 2.06 2.06 1 -S2n 0.95 2.40 2.40 1 -S2n 1.10 2.76 2.76 1 -S2n 1.26 3.12 3.12 1 -S2n 1.42 3.46 3.46 1 -S2n 1.58 3.80 3.80 1 -S2n 1.72 3.96 3.96 1 -S2n 1.79 4.50 4.50 5 -S2n 2.00 669.72 ft 0.00 ft CRIT. CUTLET TW DEPTH DEPTH DEPTH (ft) (ft) (ft) 0.00 0.01 0.47 1.35 1.57 1.80 2.03 2.25 2.46 2.55 2.85 0.00 2.31 2.31 1.02 1.20 1.39 1.58 1.77 1.95 2.03 2.29 BOX 9.50 ft 4.00 ft CONCRETE 0.012 CONVENTIONAL SQUARE EDGE (30 -75 DEG. FLARE) NONE FILE DATE: 06 -24 -2008 FILE NAME: FTBOX OUTLET TW VEL. VEL. (fps) (fps) 2.31 0.00 2.31 0.00 2.31 0.79 2.31 8.70 2.31 9.27 2.31 9.82 2.31 10.36 2.31 10.79 2.31 11.19 2.31 11.35 2.31 11.88 El. outlet invert 669.22 ft El. inlet crest 0.00 ft 4 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1 1 CURRENT DATE: 06 -24 -2008 CURRENT TIME: 14:57:08 I I' TAILWATER CONSTANT WATER SURFACE ELEVATION 1 671.53 ROADWAY OVERTOPPING DATA ROADWAY SURFACE PAVED 1 EMBANKMENT TOP WIDTH 36.00 ft CREST LENGTH 50.00 ft OVERTOPPING CREST ELEVATION 676.50 ft 1 1 1 1 1 1 1 1 1 1 1 1' FILE DATE: 06 -24 -2008 FILE NAME: FTBOX 1� 1 1 1 1 1 1 1 1 1 1 1I 1 1� 1 1 11 1. 1 1 B. DRAINAGE AREA MAP CALCULATIONS FOR STORM WATER CONVEYANCE STRUCTURES Brooke Road Phase 2 Frederick County, Virginia January 17, 2008 Revised March 18, 2008 Revised August 16, 2008 Patton Harris Rust and Associates Project No. 15761 -1 -0 Prepared for: Johnson Development Associates, Inc. 340 East Main St. Suite 500. Spartanburg, SC 29304 Prepared by Patton, Harris, Rust and Associates, PC 117 East Piccadilly Street Winchester, VA 22601 -5002 (540) 667 -2139