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Home My WebLink AboutSW6190505_SWM COMPS - CARGILL N-S ROADSTORMWATER MANAGEMENT COMPUTATIONS CARGILL NORTH -SOUTH ROADWAY AND TRUCK QUEUE LOT 1579 UNDERWOOD ROAD CUMBERLAND COUNTY, NORTH CAROLINA MAY 9, 2019 Prepared by: J THOMAS ENGINEERING, INC. CIVIL ENGINEERING & PLANNING 143 Charlotte Avenue, Suite 104 Sanford, North Carolina 27330 919-777-6010 phone www.jthomasengineering.com License No. C-3389 STORMWATER MANAGEMENT COMPUTATIONS CARGILL - N-S ROADWAY AND TRUCK QUEUE LOT FAYETTEVILLE PLANT 9-May-19 Location Inlet Drainage Area Pipe/Ditch Capacity Evaluation HGL Evaluation - 10 Year Storm Calculated ; i Darcy- ' Theoretical Pipe Diameter i Velocity Upstream i Downstm Weisbach: Top of Check - HGL Sum : Inlet : Conveys Designs 10-year : 10-year : s Upstm :Downstm: Long. Roughness Pipe Ditch Bottom Normal at Normal: Check- Water Water friction Structure: below top of s Inlet/Pi a Da C CA CA i Time Time i Time i Intensity s Discharge: Length Invert Invert i Slope i Materials Coefficient i Diameter : Width : Depth : Depth : Pipe Size Surface i Surface i factor Elev structure Designer Comments i i I nIetID Pioe ID acres i i mini min i min i in/hr CFS ft i Elev i Elev ft/ft n in in ft foe Elev Elev 3 ....................................... i................................................................................ 3-EX N/A i.................... _..................... .................... _ ............. ..........................i.................................... .. SIDE ...D.ITCH ....... L i ....................................... :..................................................... 100+.....6.0 - 10...4 .+30 ................. ........................... ..... 0............ .5 i.................. i 0.. .7 :.................... _........................... i 0........ .35 ...................... .................... ......_........... 0 35 i .............. 5 .0.. .... ............... ..... .... .... ...... .i................................................................................i.................... SIDE DITCH Rs 1 1 4 + 0 0 - 1 1 5 + 3 0 1.0 i 0.8 i 0.80 ..................._............. 0.80 i 5.0 SIDE DITCH Rs 1 1 5 + 3 0 - 1 1 5 + 9 0 0.7 i 0.8 i 0.56 0.56 i 5.0 SIDE DITCH Rs 1 1 5 + 9 0 - 1 1 7 + 0 4 0.6 i 0.6 i 0.36 0.36 i 5.0 SIDE DITCH Rs 1 1 7 + 0 4 - 1 1 7 + 8 5 1.4 i 0.6 i 0.84 0.84 i 5.0 DITCH'A' 5.0 i 0.6 i 3.00 3.00 i 5.0 ... ..... .... .... ...............i............................................................ DITCH'B' .............;.................... 2.0 i 0.8 i 1.60 ;............. 1.60 i 5.0 5.0 i ................_.......................................................... 7.9 i 6.3 i 130 _....................... i 89.00 i _..................... _.......................... 88.00 i 0.0077 _........................................................................................... i GRASS i 0.03 i _............................................................................................................................................ i 0 0.7 i i 2.1 i Ditch OK . ................ _........................... 5.0 i ................_.......................................................... €.............................. 7.9 i 4.4 _....................... i 60 _....................... _..................... _ i 88.50 i _..................... _.......................... .......................... 88.00 _.......................... i 0.0083 _........................................................................................... i.......................... €..................................... i GRASS i _..................................... 0.03 i _............................................................................................................................................ i............................................... i 0 i.......................... i........................... 0.6 i i 2.0 _........................... i Ditch OK . ................ _........................... 5.0 i ................_.......................................................... €.............................. 7.9 i 2.8 _....................... i 115 _....................... _..................... _ i 88.50 i _..................... _.......................... .......................... 85.90 _.......................... i 0.0226 _........................................................................................... i.......................... €..................................... i GRASS i _..................................... 0.03 i _............................................................................................................................................ i............................................... i 0 i.......................... i........................... 0.4 i i 2.5 _........................... i Ditch OK . ................ _........................... 5.0 i ................_.......................................................... €.............................. 7.9 i 6.6 _....................... i 110 _....................... _..................... _ i 87.00 i _..................... _.......................... .......................... 85.90 _.......................... i 0.0100 _........................................................................................... i.......................... €..................................... i GRASS i _..................................... 0.03 i _............................................................................................................................................ i............................................... i 0 i.......................... i........................... 0.7 i i 2.4 _........................... i Ditch OK . ................ _........................... 10.0 i €.............................. 6.3 18.9 _....................... i 400 _..................... _ i 86.00 i .......................... 84.50 _.......................... i 0.0038 i.......................... €..................................... i GRASS i _..................................... 0.03 i............................................... 3 i.......................... i........................... 1.1 2.1 _........................... i Ditch OK = 0.3 LB/SQFT ........................................ .................................. = 0.3 LB/SQFT = 0.6 LB/SQFT = 0.4 LB/SQFT ............................. = 0.3 LB/SQFT ............................. = 0.6 LB/SQFT