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HomeMy WebLinkAboutSDP201900006 Calculations 2022-10-27October 17, 2022 MEMORANDUM To: Mr. Matt Wentland, PE County of Albemarle, Virginia From: Mr. Eric Woolley, PE Woolley Engineering Regarding: Covenant School Courtyard (Parcel 090A0000000200) Letter of Revision 41 to SDP201900006 Responses to comments from County Staff With this memo, we are responding to comments that were directed to our office following the Letter of Revision Plan review for courtyard improvements at the Covenant School campus. The subject parcel is located at 175 Hickory Street. The comments were received in written format and dated October 5, 2022. Please see our response below formatted in the order of your comment memo. Albemarle County Engineering — Matt Wentland 1. Three of the existing drop inlet structures located in the courtyard area are proposed to be adjusted. The fourth existing drop inlet structure will be removed and replaced with this proposal. These four drop inlets will be retrofitted with new lids and an accessible frame and cover. These four structures will not be visible from the surface and will serve as junctions for the existing and proposed new stormwater conveyance piping. This plan proposes to add 10 new yard drains and 1 new trench drain to the renovated courtyard area. Attached to this memorandum please find storm calculations for the conveyance system proposed with the new courtyard improvements. I hope that the above response, in combination with the attached stormwater calculations satisfy the request noted in your comment memorandum. Please do not hesitate to call with any questions or concerns. Thank you for your time and consideration. Sincerely, Eric Woolley, PE� Attached: (1) PDF copy of Storm Conveyance Calculations Cc: Frank Berry, The Covenant School WOOLLEY ENGINEERING 210 5th Street NE (434) 973-0045 Charlottesville, Virginia 22902 Covenant School Courtyard Letter of Revision # 1 to SDP201900006 County of Albemarle, Virginia ENGINEERING CALCULATIONS Prepared for: The Covenant School 175 Hickory Street Charlottesville, Virginia 22902 TH OP L[C. 9 088 M�:10N01 Prepared by: WoOLLEY ENGINEERING 210 5th Street NE Charlottesville, Virginia 22902 October ry, 2022 TABLE OF CONTENTS DIVISION i — Storm Conveyance Calculations Pipe Key page 1 Individual Pipe Calculations Reports page 2 Woolley Engineering Covenant School Courtyard Job # 21060 LOR #1 to SDP201900006 Division 1- Storm Conveyance Calculations Woolley Engineering Covenant School Courtyard Job # 21060 LOR #1 to SDP201900006 qs G 7 r Pipe 10 6 O (f� EXISTING CONCRETE SIDE ^ ALK PTO REMAIN) 13 pipe 4 25 14 pipe 26 pipe 9 5� O EXISTING CONCRETE SIDE`NALK ITO REMAIN) 11 A 1 i QQ Pipe 6 q0 m COVENANT SCHOOL COURTYARD - PIPE KEY PIPE DESCRIPTION: Pipe 21 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 21 Downstream Pipe = Outfall Pipe Material = HOPE Pipe Length = 201.47 ft Plan Length = 203.21 ft Pipe Type = Circular Pipe Dimensions = 15.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 14.53 cfs Invert Elevation Downstream = 411.00 ft Invert Elevation Upstream = 421.20 ft Invert Slope = 5.07% Invert Slope (Plan Length) = 5.02% Rim Elevation Downstream = 412.25 ft Rim Elevation Upstream = 432.53 ft Natural Ground Slope = 10.07% Crown Elevation Downstream = 412.25 ft Crown Elevation Upstream = 422.45 ft ----FLOW INFORMATION ---- Catchment Area = 0.37 ac Runoff Coefficient = 0.300 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.75 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 1.44 ac Weighted Coefficient = 0.324 Total Time of Concentration = 6.45 min Total Intensity = 6.24 in/hr Total Rational Flow = 2.93 cfs Total Flow = 2.93 cfs Uniform Capacity = 14.53 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 411.38 ft HGL Elevation Upstream = 421.58 fit HGL Slope = 5.07 % EGL Elevation Downstream = 412.72 ft EGL Elevation Upstream = 422.92 ft EGL Slope = 5.07 % Critical Depth = 8.26 in Depth Downstream = 4.57 in Depth Upstream = 4.57 in Velocity Downstream = 9.27 ft/s Velocity Upstream = 9.27 ft/s Uniform Velocity Downstream = 0.00 ft/s Uniform Velocity Upstream = 9.27 ft/s Area Downstream = 0.32 ft"2 Area Upstream = 0.32 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = 0.979 ft ----INLET INFORMATION ---- Downstream Inlet = Outfall Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.75 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.75 cfs Flow Intercepted by Current Inlet = 0.75 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00 PIPE DESCRIPTION: Pipe 22 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 22 Downstream Pipe = Pipe 21 Pipe Material = HOPE Pipe Length = 203.87 ft Plan Length = 207.76 ft Pipe Type = Circular Pipe Dimensions = 15.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 11.88 cfs Invert Elevation Downstream = 421.30 ft Invert Elevation Upstream = 428.20 ft Invert Slope = 3.39% Invert Slope (Plan Length) = 3.32% Rim Elevation Downstream = 432.53 ft Rim Elevation Upstream = 431.79 ft Natural Ground Slope = -0.36% Crown Elevation Downstream = 422.55 ft Crown Elevation Upstream = 429.45 ft ----FLOW INFORMATION ---- Catchment Area = 0.80 ac Runoff Coefficient = 0.300 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 1.62 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.80 ac Weighted Coefficient = 0.300 Total Time of Concentration = 5.00 min Total Intensity = 6.70 in/hr Total Rational Flow = 1.62 cfs Total Flow = 1.62 cfs Uniform Capacity = 11.88 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 422.56 ft HGL Elevation Upstream = 428.80 ft HGL Slope = 3.06 % EGL Elevation Downstream = 422.59 fit EGL Elevation Upstream = 428.99 ft EGL Slope = 3.14 % Critical Depth = 6.06 in Depth Downstream = 15.00 in Depth Upstream = 6.06 in Velocity Downstream = 1.32 ft/s Velocity Upstream = 3.49 ft/s Uniform Velocity Downstream = 6.78 ft/s Uniform Velocity Upstream = 0.00 ft/s Area Downstream = 1.23 ft"2 Area Upstream = 0.46 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = NA ----INLET INFORMATION ---- Downstream Inlet = DI 21 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 1.62 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 1.62 cfs Flow Intercepted by Current Inlet = 1.62 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00 PIPE DESCRIPTION: Pipe 23 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 23 Downstream Pipe = Pipe 21 Pipe Material = PVC Pipe Length = 81.20 ft Plan Length = 84.99 ft Pipe Type = Circular Pipe Dimensions = 8.00 in Pipe Manning's "n" = 0.011 Pipe Capacity at Invert Slope = 3.85 cfs Invert Elevation Downstream = 426.80 ft Invert Elevation Upstream = 432.70 fit Invert Slope = 7.29% Invert Slope (Plan Length) = 6.94% Rim Elevation Downstream = 432.53 ft Rim Elevation Upstream = 441.70 ft Natural Ground Slope = 11.29% Crown Elevation Downstream = 427.47 ft Crown Elevation Upstream = 433.37 ft ----FLOW INFORMATION ---- Catchment Area = 0.00 ac Runoff Coefficient = 0.500 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.00 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.27 ac Weighted Coefficient = 0.426 Total Time of Concentration = 6.28 min Total Intensity = 6.29 in/hr Total Rational Flow = 0.73 cfs Total Flow = 0.73 cfs Uniform Capacity = 3.85 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 427.00 ft HGL Elevation Upstream = 432.90 ft HGL Slope = 7.29 % EGL Elevation Downstream = 428.12 ft EGL Elevation Upstream = 434.02 ft EGL Slope = 7.29 % Critical Depth = 4.84 in Depth Downstream = 2.36 in Depth Upstream = 2.36 in Velocity Downstream = 8.48 ft/s Velocity Upstream = 8.48 ft/s Uniform Velocity Downstream = 8.89 ft/s Uniform Velocity Upstream = 8.48 ft/s Area Downstream = 0.09 ft"2 Area Upstream = 0.09 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = 0.845 ft ----INLET INFORMATION ---- Downstream Inlet = DI 21 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.00 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.00 cfs Flow Intercepted by Current Inlet = 0.00 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 0.00 % PIPE DESCRIPTION: Pipe 24 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 24 Downstream Pipe = Pipe 23 Pipe Material = HOPE Pipe Length = 37.62 ft Plan Length = 41.54 ft Pipe Type = Circular Pipe Dimensions = 6.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 1.45 cfs Invert Elevation Downstream = 433.40 ft Invert Elevation Upstream = 435.90 ft Invert Slope = 6.66% Invert Slope (Plan Length) = 6.02% Rim Elevation Downstream = 441.70 ft Rim Elevation Upstream = 441.70 ft Natural Ground Slope = 0.00% Crown Elevation Downstream = 433.90 ft Crown Elevation Upstream = 436.40 ft ----FLOW INFORMATION ---- Catchment Area = 0.00 ac Runoff Coefficient = 0.500 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.00 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.13 ac Weighted Coefficient = 0.400 Total Time of Concentration = 6.00 min Total Intensity = 6.38 in/hr Total Rational Flow = 0.32 cfs Total Flow = 0.32 cfs Uniform Capacity = 1.45 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 433.74 ft HGL Elevation Upstream = 436.19 ft HGL Slope = 6.52 % EGL Elevation Downstream = 433.82 ft EGL Elevation Upstream = 436.31 ft EGL Slope = 6.62 % Critical Depth = 3.45 in Depth Downstream = 4.10 in Depth Upstream = 3.45 in Velocity Downstream = 2.25 ft/s Velocity Upstream = 2.75 ft/s Uniform Velocity Downstream = 5.93 ft/s Uniform Velocity Upstream = 5.93 ft/s Area Downstream = 0.14 ft"2 Area Upstream = 0.12 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = 3.444 ft ----INLET INFORMATION ---- Downstream Inlet = DI 1 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.00 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.00 cfs Flow Intercepted by Current Inlet = 0.00 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 0.00 % PIPE DESCRIPTION: Pipe 25 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 25 Downstream Pipe = Pipe 24 Pipe Material = HOPE Pipe Length = 54.79 ft Plan Length = 58.74 ft Pipe Type = Circular Pipe Dimensions = 6.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 1.17 cfs Invert Elevation Downstream = 436.20 ft Invert Elevation Upstream = 438.60 ft Invert Slope = 4.38% Invert Slope (Plan Length) = 4.09% Rim Elevation Downstream = 441.70 ft Rim Elevation Upstream = 441.60 ft Natural Ground Slope = -0.18% Crown Elevation Downstream = 436.70 ft Crown Elevation Upstream = 439.10 ft ----FLOW INFORMATION ---- Catchment Area = 0.00 ac Runoff Coefficient = 0.500 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.00 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.03 ac Weighted Coefficient = 0.400 Total Time of Concentration = 5.08 min Total Intensity = 6.68 in/hr Total Rational Flow = 0.07 cfs Total Flow = 0.07 cfs Uniform Capacity = 1.17 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 436.58 ft HGL Elevation Upstream = 438.73 ft HGL Slope = 3.92 % EGL Elevation Downstream = 436.58 ft EGL Elevation Upstream = 438.77 fit EGL Slope = 4.00 % Critical Depth = 1.53 in Depth Downstream = 4.55 in Depth Upstream = 1.53 in Velocity Downstream = 0.42 ft/s Velocity Upstream = 1.71 ft/s Uniform Velocity Downstream = 4.45 ft/s Uniform Velocity Upstream = 3.25 ft/s Area Downstream = 0.16 ft"2 Area Upstream = 0.04 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = 1.268 ft ----INLET INFORMATION ---- Downstream Inlet = DI 9 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.00 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.00 cfs Flow Intercepted by Current Inlet = 0.00 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 0.00 % PIPE DESCRIPTION: Pipe 26 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 26 Downstream Pipe = Pipe 23 Pipe Material = HOPE Pipe Length = 54.86 ft Plan Length = 58.80 ft Pipe Type = Circular Pipe Dimensions = 6.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 1.20 cfs Invert Elevation Downstream = 436.00 ft Invert Elevation Upstream = 438.50 ft Invert Slope = 4.56% Invert Slope (Plan Length) = 4.25% Rim Elevation Downstream = 441.70 ft Rim Elevation Upstream = 442.60 fit Natural Ground Slope = 1.64% Crown Elevation Downstream = 436.50 ft Crown Elevation Upstream = 439.00 ft ----FLOW INFORMATION ---- Catchment Area = 0.00 ac Runoff Coefficient = 0.500 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.00 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.04 ac Weighted Coefficient = 0.556 Total Time of Concentration = 5.63 min Total Intensity = 6.49 in/hr Total Rational Flow = 0.16 cfs Total Flow = 0.16 cfs Uniform Capacity = 1.20 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 436.12 ft HGL Elevation Upstream = 438.62 ft HGL Slope = 4.56 % EGL Elevation Downstream = 436.41 ft EGL Elevation Upstream = 438.91 ft EGL Slope = 4.56 % Critical Depth = 2.42 in Depth Downstream = 1.50 in Depth Upstream = 1.50 in Velocity Downstream = 4.27 ft/s Velocity Upstream = 4.27 ft/s Uniform Velocity Downstream = 5.17 ft/s Uniform Velocity Upstream = 4.27 ft/s Area Downstream = 0.04 ft"2 Area Upstream = 0.04 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = 0.234 ft ----INLET INFORMATION ---- Downstream Inlet = DI 1 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.00 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.00 cfs Flow Intercepted by Current Inlet = 0.00 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 0.00 % PIPE DESCRIPTION: Pipe 1 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 1 Downstream Pipe = Pipe 24 Pipe Material = PVC Pipe Length = 17.72 ft Plan Length = 20.09 ft Pipe Type = Circular Pipe Dimensions = 6.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 0.79 cfs Invert Elevation Downstream = 439.40 ft Invert Elevation Upstream = 439.75 ft Invert Slope = 1.98% Invert Slope (Plan Length) = 1.74% Rim Elevation Downstream = 441.70 ft Rim Elevation Upstream = 442.12 ft Natural Ground Slope = 2.37% Crown Elevation Downstream = 439.90 ft Crown Elevation Upstream = 440.25 ft ----FLOW INFORMATION ---- Catchment Area = 0.03 ac Runoff Coefficient = 0.400 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.07 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.03 ac Weighted Coefficient = 0.400 Total Time of Concentration = 5.00 min Total Intensity = 6.70 in/hr Total Rational Flow = 0.07 cfs Total Flow = 0.07 cfs Uniform Capacity = 0.79 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 439.50 ft HGL Elevation Upstream = 439.90 ft HGL Slope = 2.24 % EGL Elevation Downstream = 439.59 ft EGL Elevation Upstream = 439.99 ft EGL Slope = 2.24 % Critical Depth = 1.53 in Depth Downstream = 1.19 in Depth Upstream = 1.19 in Velocity Downstream = 2.46 ft/s Velocity Upstream = 2.46 ft/s Uniform Velocity Downstream = 3.35 ft/s Uniform Velocity Upstream = 0.00 ft/s Area Downstream = 0.03 ft"2 Area Upstream = 0.03 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = NA ----INLET INFORMATION ---- Downstream Inlet = DI 9 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.07 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.07 cfs Flow Intercepted by Current Inlet = 0.07 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00 PIPE DESCRIPTION: Pipe 2 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 2 Downstream Pipe = Pipe 24 Pipe Material = PVC Pipe Length = 3.15 ft Plan Length = 5.52 ft Pipe Type = Circular Pipe Dimensions = 6.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 0.71 cfs Invert Elevation Downstream = 439.45 ft Invert Elevation Upstream = 439.50 ft Invert Slope = 1.59% Invert Slope (Plan Length) = 0.91% Rim Elevation Downstream = 441.70 ft Rim Elevation Upstream = 441.92 ft Natural Ground Slope = 6.99% Crown Elevation Downstream = 439.95 ft Crown Elevation Upstream = 440.00 ft ----FLOW INFORMATION ---- Catchment Area = 0.03 ac Runoff Coefficient = 0.400 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.07 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.08 ac Weighted Coefficient = 0.400 Total Time of Concentration = 5.41 min Total Intensity = 6.57 in/hr Total Rational Flow = 0.20 cfs Total Flow = 0.20 cfs Uniform Capacity = 0.71 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 439.63 ft HGL Elevation Upstream = 439.68 ft HGL Slope = 1.59 % EGL Elevation Downstream = 439.78 ft EGL Elevation Upstream = 439.83 ft EGL Slope = 1.59 % Critical Depth = 2.68 in Depth Downstream = 2.18 in Depth Upstream = 2.18 in Velocity Downstream = 3.09 ft/s Velocity Upstream = 3.09 ft/s Uniform Velocity Downstream = 3.09 ft/s Uniform Velocity Upstream = 3.09 ft/s Area Downstream = 0.06 ft"2 Area Upstream = 0.06 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = 0.558 ft ----INLET INFORMATION ---- Downstream Inlet = DI 9 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.07 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.07 cfs Flow Intercepted by Current Inlet = 0.07 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00 PIPE DESCRIPTION: Pipe 3 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 3 Downstream Pipe = Pipe 2 Pipe Material = PVC Pipe Length = 20.49 ft Plan Length = 21.25 ft Pipe Type = Circular Pipe Dimensions = 6.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 0.78 cfs Invert Elevation Downstream = 440.10 ft Invert Elevation Upstream = 440.50 ft Invert Slope = 1.95% Invert Slope (Plan Length) = 1.88% Rim Elevation Downstream = 441.92 ft Rim Elevation Upstream = 441.84 ft Natural Ground Slope = -0.39% Crown Elevation Downstream = 440.60 ft Crown Elevation Upstream = 441.00 ft ----FLOW INFORMATION ---- Catchment Area = 0.03 ac Runoff Coefficient = 0.400 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.07 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.05 ac Weighted Coefficient = 0.400 Total Time of Concentration = 5.29 min Total Intensity = 6.61 in/hr Total Rational Flow = 0.13 cfs Total Flow = 0.13 cfs Uniform Capacity = 0.78 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 440.24 fit HGL Elevation Upstream = 440.64 ft HGL Slope = 1.95 % EGL Elevation Downstream = 440.38 ft EGL Elevation Upstream = 440.78 ft EGL Slope = 1.95 % Critical Depth = 2.18 in Depth Downstream = 1.67 in Depth Upstream = 1.67 in Velocity Downstream = 2.98 ft/s Velocity Upstream = 2.98 ft/s Uniform Velocity Downstream = 2.98 ft/s Uniform Velocity Upstream = 2.98 ft/s Area Downstream = 0.04 ft"2 Area Upstream = 0.04 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = 0.089 ft ----INLET INFORMATION ---- Downstream Inlet = DI 11 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.07 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.07 cfs Flow Intercepted by Current Inlet = 0.07 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00 PIPE DESCRIPTION: Pipe 4 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 4 Downstream Pipe = Pipe 3 Pipe Material = PVC Pipe Length = 20.53 ft Plan Length = 21.27 ft Pipe Type = Circular Pipe Dimensions = 6.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 0.81 cfs Invert Elevation Downstream = 440.50 ft Invert Elevation Upstream = 440.93 ft Invert Slope = 2.10% Invert Slope (Plan Length) = 2.02% Rim Elevation Downstream = 441.84 ft Rim Elevation Upstream = 441.76 ft Natural Ground Slope = -0.39% Crown Elevation Downstream = 441.00 ft Crown Elevation Upstream = 441.43 ft ----FLOW INFORMATION ---- Catchment Area = 0.03 ac Runoff Coefficient = 0.400 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.07 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.03 ac Weighted Coefficient = 0.400 Total Time of Concentration = 5.00 min Total Intensity = 6.70 in/hr Total Rational Flow = 0.07 cfs Total Flow = 0.07 cfs Uniform Capacity = 0.81 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 440.73 ft HGL Elevation Upstream = 441.08 ft HGL Slope = 1.72 % EGL Elevation Downstream = 440.74 ft EGL Elevation Upstream = 441.13 fit EGL Slope = 1.89 % Critical Depth = 1.53 in Depth Downstream = 2.74 in Depth Upstream = 1.53 in Velocity Downstream = 0.77 ft/s Velocity Upstream = 1.71 ft/s Uniform Velocity Downstream = 2.51 ft/s Uniform Velocity Upstream = 0.00 ft/s Area Downstream = 0.09 ft"2 Area Upstream = 0.04 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = NA ----INLET INFORMATION ---- Downstream Inlet = DI 12 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.07 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.07 cfs Flow Intercepted by Current Inlet = 0.07 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00 PIPE DESCRIPTION: Pipe 5 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 5 Downstream Pipe = Pipe 25 Pipe Material = PVC Pipe Length = 9.85 ft Plan Length = 12.22 ft Pipe Type = Circular Pipe Dimensions = 6.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 0.86 cfs Invert Elevation Downstream = 439.90 ft Invert Elevation Upstream = 440.13 ft Invert Slope = 2.34% Invert Slope (Plan Length) = 1.88% Rim Elevation Downstream = 441.60 ft Rim Elevation Upstream = 442.00 fit Natural Ground Slope = 4.06% Crown Elevation Downstream = 440.40 ft Crown Elevation Upstream = 440.63 ft ----FLOW INFORMATION ---- Catchment Area = 0.03 ac Runoff Coefficient = 0.400 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.07 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.03 ac Weighted Coefficient = 0.400 Total Time of Concentration = 5.00 min Total Intensity = 6.70 in/hr Total Rational Flow = 0.07 cfs Total Flow = 0.07 cfs Uniform Capacity = 0.86 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 439.99 ft HGL Elevation Upstream = 440.28 ft HGL Slope = 2.87 % EGL Elevation Downstream = 440.10 ft EGL Elevation Upstream = 440.38 ft EGL Slope = 2.87 % Critical Depth = 1.53 in Depth Downstream = 1.14 in Depth Upstream = 1.14 in Velocity Downstream = 2.60 ft/s Velocity Upstream = 2.60 ft/s Uniform Velocity Downstream = 2.60 ft/s Uniform Velocity Upstream = 0.00 ft/s Area Downstream = 0.03 ft"2 Area Upstream = 0.03 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = NA ----INLET INFORMATION ---- Downstream Inlet = DI 14 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.07 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.07 cfs Flow Intercepted by Current Inlet = 0.07 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00 PIPE DESCRIPTION: Pipe 6 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 6 Downstream Pipe = Pipe 23 Pipe Material = PVC Pipe Length = 17.08 ft Plan Length = 19.43 ft Pipe Type = Circular Pipe Dimensions = 6.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 1.25 cfs Invert Elevation Downstream = 439.40 ft Invert Elevation Upstream = 440.25 ft Invert Slope = 4.98% Invert Slope (Plan Length) = 4.37% Rim Elevation Downstream = 441.70 ft Rim Elevation Upstream = 442.12 ft Natural Ground Slope = 2.46% Crown Elevation Downstream = 439.90 ft Crown Elevation Upstream = 440.75 ft ----FLOW INFORMATION ---- Catchment Area = 0.03 ac Runoff Coefficient = 0.400 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.07 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.03 ac Weighted Coefficient = 0.400 Total Time of Concentration = 5.00 min Total Intensity = 6.70 in/hr Total Rational Flow = 0.07 cfs Total Flow = 0.07 cfs Uniform Capacity = 1.25 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 439.48 ft HGL Elevation Upstream = 440.42 ft HGL Slope = 5.51 % EGL Elevation Downstream = 439.66 ft EGL Elevation Upstream = 440.60 ft EGL Slope = 5.51 % Critical Depth = 1.53 in Depth Downstream = 0.95 in Depth Upstream = 0.95 in Velocity Downstream = 3.40 ft/s Velocity Upstream = 3.40 ft/s Uniform Velocity Downstream = 5.34 ft/s Uniform Velocity Upstream = 0.00 ft/s Area Downstream = 0.02 ft"2 Area Upstream = 0.02 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = NA ----INLET INFORMATION ---- Downstream Inlet = DI 1 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.07 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.07 cfs Flow Intercepted by Current Inlet = 0.07 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00 PIPE DESCRIPTION: Pipe 7 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 7 Downstream Pipe = Pipe 23 Pipe Material = PVC Pipe Length = 0.57 ft Plan Length = 2.95 ft Pipe Type = Circular Pipe Dimensions = 6.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 1.66 cfs Invert Elevation Downstream = 439.40 ft Invert Elevation Upstream = 439.45 ft Invert Slope = 8.75% Invert Slope (Plan Length) = 1.70% Rim Elevation Downstream = 441.70 ft Rim Elevation Upstream = 441.92 ft Natural Ground Slope = 38.35% Crown Elevation Downstream = 439.90 ft Crown Elevation Upstream = 439.95 ft ----FLOW INFORMATION ---- Catchment Area = 0.03 ac Runoff Coefficient = 0.400 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.07 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.08 ac Weighted Coefficient = 0.400 Total Time of Concentration = 5.39 min Total Intensity = 6.57 in/hr Total Rational Flow = 0.20 cfs Total Flow = 0.20 cfs Uniform Capacity = 1.66 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 439.52 ft HGL Elevation Upstream = 439.57 ft HGL Slope = 8.75 % EGL Elevation Downstream = 440.02 ft EGL Elevation Upstream = 440.07 ft EGL Slope = 8.75 % Critical Depth = 2.68 in Depth Downstream = 1.40 in Depth Upstream = 1.40 in Velocity Downstream = 5.69 ft/s Velocity Upstream = 5.69 ft/s Uniform Velocity Downstream = 6.53 ft/s Uniform Velocity Upstream = 5.69 ft/s Area Downstream = 0.03 ft"2 Area Upstream = 0.03 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = 0.672 ft ----INLET INFORMATION ---- Downstream Inlet = DI 1 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.07 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.07 cfs Flow Intercepted by Current Inlet = 0.07 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00 PIPE DESCRIPTION: Pipe 8 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 8 Downstream Pipe = Pipe 7 Pipe Material = PVC Pipe Length = 20.38 ft Plan Length = 21.24 ft Pipe Type = Circular Pipe Dimensions = 6.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 0.79 cfs Invert Elevation Downstream = 440.10 ft Invert Elevation Upstream = 440.50 ft Invert Slope = 1.96% Invert Slope (Plan Length) = 1.88% Rim Elevation Downstream = 441.92 ft Rim Elevation Upstream = 441.84 ft Natural Ground Slope = -0.39% Crown Elevation Downstream = 440.60 ft Crown Elevation Upstream = 441.00 ft ----FLOW INFORMATION ---- Catchment Area = 0.03 ac Runoff Coefficient = 0.400 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.07 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.05 ac Weighted Coefficient = 0.400 Total Time of Concentration = 5.28 min Total Intensity = 6.61 in/hr Total Rational Flow = 0.13 cfs Total Flow = 0.13 cfs Uniform Capacity = 0.79 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 440.24 ft HGL Elevation Upstream = 440.64 ft HGL Slope = 1.96 % EGL Elevation Downstream = 440.38 fit EGL Elevation Upstream = 440.78 ft EGL Slope = 1.96 % Critical Depth = 2.18 in Depth Downstream = 1.67 in Depth Upstream = 1.67 in Velocity Downstream = 2.98 ft/s Velocity Upstream = 2.98 ft/s Uniform Velocity Downstream = 2.98 ft/s Uniform Velocity Upstream = 2.98 ft/s Area Downstream = 0.04 ft"2 Area Upstream = 0.04 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = 0.091 ft ----INLET INFORMATION ---- Downstream Inlet = DI 2 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.07 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.07 cfs Flow Intercepted by Current Inlet = 0.07 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00 PIPE DESCRIPTION: Pipe 9 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 9 Downstream Pipe = Pipe 8 Pipe Material = PVC Pipe Length = 20.49 ft Plan Length = 21.24 ft Pipe Type = Circular Pipe Dimensions = 6.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 0.79 cfs Invert Elevation Downstream = 440.52 ft Invert Elevation Upstream = 440.93 fit Invert Slope = 2.00% Invert Slope (Plan Length) = 1.93% Rim Elevation Downstream = 441.84 ft Rim Elevation Upstream = 441.76 ft Natural Ground Slope = -0.39% Crown Elevation Downstream = 441.02 ft Crown Elevation Upstream = 441.43 ft ----FLOW INFORMATION ---- Catchment Area = 0.03 ac Runoff Coefficient = 0.400 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.07 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.03 ac Weighted Coefficient = 0.400 Total Time of Concentration = 5.00 min Total Intensity = 6.70 in/hr Total Rational Flow = 0.07 cfs Total Flow = 0.07 cfs Uniform Capacity = 0.79 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 440.73 ft HGL Elevation Upstream = 441.08 ft HGL Slope = 1.71 % EGL Elevation Downstream = 440.74 ft EGL Elevation Upstream = 441.13 ft EGL Slope = 1.87 % Critical Depth = 1.53 in Depth Downstream = 2.52 in Depth Upstream = 1.53 in Velocity Downstream = 0.86 ft/s Velocity Upstream = 1.71 ft/s Uniform Velocity Downstream = 2.47 ft/s Uniform Velocity Upstream = 0.00 ft/s Area Downstream = 0.08 ft"2 Area Upstream = 0.04 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = NA ----INLET INFORMATION ---- Downstream Inlet = DI 3 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.07 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.07 cfs Flow Intercepted by Current Inlet = 0.07 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00 PIPE DESCRIPTION: Pipe 10 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 10 Downstream Pipe = Pipe 26 Pipe Material = PVC Pipe Length = 10.04 ft Plan Length = 12.41 ft Pipe Type = Circular Pipe Dimensions = 6.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 0.85 cfs Invert Elevation Downstream = 439.90 ft Invert Elevation Upstream = 440.13 ft Invert Slope = 2.29% Invert Slope (Plan Length) = 1.85% Rim Elevation Downstream = 442.60 ft Rim Elevation Upstream = 442.00 ft Natural Ground Slope = -5.98% Crown Elevation Downstream = 440.40 ft Crown Elevation Upstream = 440.63 ft ----FLOW INFORMATION ---- Catchment Area = 0.03 ac Runoff Coefficient = 0.400 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.07 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.03 ac Weighted Coefficient = 0.400 Total Time of Concentration = 5.00 min Total Intensity = 6.70 in/hr Total Rational Flow = 0.07 cfs Total Flow = 0.07 cfs Uniform Capacity = 0.85 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 440.00 ft HGL Elevation Upstream = 440.28 ft HGL Slope = 2.81 % EGL Elevation Downstream = 440.10 ft EGL Elevation Upstream = 440.38 ft EGL Slope = 2.81 % Critical Depth = 1.53 in Depth Downstream = 1.15 in Depth Upstream = 1.15 in Velocity Downstream = 2.59 ft/s Velocity Upstream = 2.59 ft/s Uniform Velocity Downstream = 2.99 ft/s Uniform Velocity Upstream = 0.00 ft/s Area Downstream = 0.03 ft"2 Area Upstream = 0.03 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = NA ----INLET INFORMATION ---- Downstream Inlet = DI 5 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.07 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.07 cfs Flow Intercepted by Current Inlet = 0.07 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00 PIPE DESCRIPTION: Pipe 11 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 11 Downstream Pipe = Pipe 26 Pipe Material = PVC Pipe Length = 10.33 ft Plan Length = 12.58 ft Pipe Type = Circular Pipe Dimensions = 4.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 0.23 cfs Invert Elevation Downstream = 438.65 ft Invert Elevation Upstream = 438.80 ft Invert Slope = 1.45% Invert Slope (Plan Length) = 1.19% Rim Elevation Downstream = 442.60 ft Rim Elevation Upstream = 439.41 ft Natural Ground Slope =-30.87% Crown Elevation Downstream = 438.98 ft Crown Elevation Upstream = 439.13 ft ----FLOW INFORMATION ---- Catchment Area = 0.01 ac Runoff Coefficient = 0.750 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.08 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.02 ac Weighted Coefficient = 0.750 Total Time of Concentration = 5.52 min Total Intensity = 6.53 in/hr Total Rational Flow = 0.10 cfs Total Flow = 0.10 cfs Uniform Capacity = 0.23 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 438.86 ft HGL Elevation Upstream = 438.98 ft HGL Slope = 1.13 % EGL Elevation Downstream = 438.90 ft EGL Elevation Upstream = 439.05 fit EGL Slope = 1.36 % Critical Depth = 2.10 in Depth Downstream = 2.51 in Depth Upstream = 2.10 in Velocity Downstream = 1.72 ft/s Velocity Upstream = 2.12 ft/s Uniform Velocity Downstream = 2.53 ft/s Uniform Velocity Upstream = 2.53 ft/s Area Downstream = 0.06 ft"2 Area Upstream = 0.05 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = 0.082 ft ----INLET INFORMATION ---- Downstream Inlet = DI 5 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.08 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.08 cfs Flow Intercepted by Current Inlet = 0.08 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00 PIPE DESCRIPTION: Pipe 12 ----RAINFALL INFORMATION ---- Return Period = 10 Year Rainfall File = Albemarle 2005 ----PIPE INFORMATION ---- Current Pipe = Pipe 12 Downstream Pipe = Pipe 11 Pipe Material = PVC Pipe Length = 23.91 ft Plan Length = 24.50 ft Pipe Type = Circular Pipe Dimensions = 5.00 in Pipe Manning's "n" = 0.013 Pipe Capacity at Invert Slope = 0.35 cfs Invert Elevation Downstream = 438.80 ft Invert Elevation Upstream = 439.05 ft Invert Slope = 1.05% Invert Slope (Plan Length) = 1.02% Rim Elevation Downstream = 439.41 ft Rim Elevation Upstream = 439.41 fit Natural Ground Slope = 0.00% Crown Elevation Downstream = 439.22 ft Crown Elevation Upstream = 439.47 ft ----FLOW INFORMATION ---- Catchment Area = 0.01 ac Runoff Coefficient = 0.750 Inlet Time = 5.00 min Inlet Intensity = 6.70 in/hr Inlet Rational Flow = 0.03 cfs Inlet Input Flow = 0.00 cfs Inlet Hydrograph Flow = 0.00 cfs Total Area = 0.01 ac Weighted Coefficient = 0.750 Total Time of Concentration = 5.00 min Total Intensity = 6.70 in/hr Total Rational Flow = 0.03 cfs Total Flow = 0.03 cfs Uniform Capacity = 0.35 cfs Skipped flow = 0.00 cfs Infiltration = 0.00 gpd ----HYDRAULIC INFORMATION---- HGL Elevation Downstream = 439.06 ft HGL Elevation Upstream = 439.15 ft HGL Slope = 0.38 % EGL Elevation Downstream = 439.06 ft EGL Elevation Upstream = 439.17 ft EGL Slope = 0.48 % Critical Depth = 0.97 in Depth Downstream = 3.09 in Depth Upstream = 1.01 in Velocity Downstream = 0.29 ft/s Velocity Upstream = 1.28 ft/s Uniform Velocity Downstream = 1.50 ft/s Uniform Velocity Upstream = 0.00 ft/s Area Downstream = 0.09 ft"2 Area Upstream = 0.02 ft"2 Kj (JLC) = 0.50 Calculated Junction Loss = NA ----INLET INFORMATION ---- Downstream Inlet = TO 7 Inlet Description = <None> Inlet Type = Undefined Computation Case = Sag Longitudinal Slope = 0.00 ft/ft Mannings n-value = 0.000 Pavement Cross -Slope = 0.00 ft/ft Gutter Cross -Slope = 0.00 ft/ft Gutter Local Depression = 0.00 in Gutter Width = 0.00 ft Ponding Width = 0.00 ft Intercept Efficiency = * % Flow from Catchment = 0.03 cfs Carryover from previous inlet = 0.00 cfs Total Flow to Current Inlet = 0.03 cfs Flow Intercepted by Current Inlet = 0.03 cfs Bypassed Flow = 0.00 cfs Pavement Flow = 0.00 cfs Gutter Flow = 0.00 cfs Depth at Curb = 0.00 in Depth at Pavement/Gutter Joint = 0.00 in Pavement Spread = 0.00 ft Total Spread = 0.00 ft Gutter Velocity = 0.00 ft/s Curb Efficiency = * % Grate Efficiency = * % Slot Efficiency = * % Total Efficiency = 100.00