The URL can be used to link to this page

Home My WebLink AboutSW6200904_Calcs (Swales)_20210312DATE 8/31 /2020 DOUBLE D ENGINEERING, PLLC PROJECT NAME PNO Timberland Ranch IDD�201 Hoke County, North Carolina BY 150 S. Page Street DTU Southern Pines, NC 28387 LOCATION CHECKED BY 910-684-8646 Hoke County, North Carolina JLH DESIGN STORM Area Runoff C (NOTE: Condition TYPE: Stress: ITERMINOLOGY: HED DIMENSIONS: (REFERENCES: Determine the MAXIMUM velocity, V, through the TYPICAL SECTION Use Trial & Error to make the flow depth, d, result with Q = Q25 10-YEAR Q10 = CIA 7.97 in/hr 0.172 AC 0.8 Q10: 1.10 cfs The velocity of the water entering a maintained veg Swale must be <5 f /s d = 0.250 FT A = 0.44 FTA2 P = 2.58 FT n = 0.030 (DEHNR, 1993) R = 0.17 B = 1 FT Q = 1.15 CFS Z = 3 :1 V= 2.62 FPS S = 0.0297 FT/FT W = 2.50 FT LINING EM S&M SEED & MULCH T=YDS EM EXCELSIOR MAT T= 0.46 Lb/SF SM SYNTHETIC MAT RR RIPRAP (A,B,1,2) RM REVETMENT Q= Peak Discharge, (CFS) A = Cross -Sectional Area of Flow, P = Wetted Perimeter of the Flow, (FT) d = Maximum Depth of Water, (FT) R = Hydraulic Radius, (FT) V = Trial Velocity, (FPS) S = Slope of the Channel, (FT/FT) n = Manning's "n" Coefficient Q = Trial Discharge, (CFS) B = Bottom Width of Channel, (FT) W = Top Width of Water in Channel, Z = Side Slope of Channel (Z:1) T= Shear Stress in Lb/SF Y= Wt of Water (62.4 Ib/cf) D= Depth Of Flow S= Slope Of Swale Min. Depth 0.25 FT Bottom Width 1 FT Max. Sloe 2.97% Side Slopes 3 :1 Lining EM (DEHNR, 1988; DEHNR, 1993) (DOUBLE D ENGINEERING, PLLC 150 S. Page Street Southern Pines, NC 28387 910-684-8646 NS: DESIGN STORM: Area Runoff C I NOTE: ISlope Condition 3 TYPE: Stress: TERMINOLOGY: FINISHED DIMENSIONS: REFERENCES: PROJECT NAME Timberland Ranch Hoke County, North Carolina DATE 8/31/2020 PROJECT NO DD2011 BY DTU LOCATION Hoke Countv. North Carolina CHECKED BY JLH Determine the MAXIMUM velocity, V, through the TYPICAL SECTION Use Trial & Error to make the flow depth, d, result with Q = Q25 10-YEAR Q10 = CIA 7.97 in/hr 7.812 AC 0.3 Q10: 18.68 cfs The velocity of the water entering a maintained veg Swale must be <5 ft/s d = 0.940 FT A = 5.47 FTA2 P = 8.95 FT n = 0.030 (DEHNR, 1993) R = 0.61 B = 3 FT Q = 18.98 CFS Z = 3 .1 V= 3.47 FPS S = 0.0094 FT/FT W = 8.64 FT LINING EM S&M SEED & MULCH T=YDS EM EXCELSIOR MAT T= 0.55 Lb/SF SM SYNTHETIC MAT RR RIPRAP (A,B,1,2) RM REVETMENT Q= Peak Discharge, (CFS) A = Cross -Sectional Area of Flow, P = Wetted Perimeter of the Flow, (FT) d = Maximum Depth of Water, (FT) R = Hydraulic Radius, (FT) V = Trial Velocity, (FPS) S = Slope of the Channel, (FT/FT) n = Manning's "n" Coefficient Q = Trial Discharge, (CFS) B = Bottom Width of Channel, (FT) W = Top Width of Water in Channel, Z = Side Slope of Channel (Z:1) T= Shear Stress in Lb/SF Y= Wt of Water (62.4 Ib/cf) D= Depth Of Flow S= Slope Of Swale Min. Depth 0.94 FT Bottom Width 3 FT Max. Sloe 0.94% Side Slopes 3 : 1 Lining EM (DEHNR, 1988, DEHNR, 1993) DATE 8/31 /2020 DOUBLE D ENGINEERING, PLLC PROJECT NAME PROJECT NO Timberland Ranch DD2011 BY DTU Hoke County, North Carolina 150 S. Page Street LOCATION CHECKED BY Southern Pines, NC 28387 910-684-8646 Hoke County, North Carolina JLH SOLUTIONS DESIGN STORM Area Runoff C NOTE: Slope Condition LINING TYPE: Shear Stress: TERMINOLOGY: FINISHED DIMENSIONS: REFERENCES: Determine the MAXIMUM velocity, V, through the TYPICAL SECTION Use Trial & Error to make the flow depth, d, result with Q = Q25 10-YEAR Q10 = CIA 7.97 in/hr 0.3169 AC 0.8 Q 10: 2.02 cfs The velocity of the water entering a maintained veg swale must be <5 ftIs d = 0.410 FT A = 0.91 FTA2 P = 3.59 FT n = 0.030 (DEHNR, 1993) R = 0.25 B = 1 FT Q = 2.11 CFS Z = 3 A V= 2.31 FPS S = 0.0134 FT/FT W = 3.46 FT LINING EM S&M SEED & MULCH T=YDS EM EXCELSIOR MAT T= 0.34 Lb/SF SM SYNTHETIC MAT RR RIPRAP (A,B,1,2) RM REVETMENT Q= Peak Discharge, (CFS) A = Cross -Sectional Area of Flow, P = Wetted Perimeter of the Flow, (FT) d = Maximum Depth of Water, (FT) R = Hydraulic Radius, (FT) V = Trial Velocity, (FPS) S = Slope of the Channel, (FT/FT) n = Manning's "n" Coefficient Q = Trial Discharge, (CFS) B = Bottom Width of Channel, (FT) W = Top Width of Water in Channel, Z = Side Slope of Channel (Z:1) T= Shear Stress in Lb/SF Y= Wt of Water (62.4 Ib/cf) D= Depth Of Flow S= Slope Of Swale Min. Depth 0.41 FT Bottom Width 1 FT Max. Sloe 1.34% Side Slopes 3 : 1 Lining EM (DEHNR, 1988: DEHNR, 1993) SE DOUBLE D ENGINEERING, PLLC PROJECT NAME Timberland Ranch Hoke County, North Carolina PROJECT NO DD2011 BY DTU 150 S. Page Street Southern Pines, NC 28387 910-684-8646 LOCATION Hoke Countv. North Carolina CHECKED BY JLH DESIGN STORM: Area Runoff C NOTE: Condition LINING TYPE Shear Stress: TERMINOLOGY: FINISHED DIMENSIONS: Determine the MAXIMUM velocity, V, through the TYPICAL SECTION Use Trial & Error to make the flow depth, d, result with Q = Q25 10-YEAR Q10 = CIA 7.97 in/hr 8.396 AC 0.3 Q10: 20.07 cfs The velocity of the water entering a maintained veg swale must be <5 ft/s d = 0.980 FT A = 5.82 FTA2 P = 9.20 FT n = 0.030 (DEHNR, 1993) R = 0.63 B = 3 FT Q = 20.44 CFS Z = 3 :1 V= 3.51 FPS S = 0.0092 FT/FT W = 8.88 FT LINING EM S&M SEED & MULCH T=YDS EM EXCELSIOR MAT T= 0.56 Lb/SF SM SYNTHETIC MAT RR RIPRAP (A,B,1,2) RM REVETMENT Q= Peak Discharge, (CFS) A = Cross -Sectional Area of Flow, P = Wetted Perimeter of the Flow, (FT) d = Maximum Depth of Water, (FT) R = Hydraulic Radius, (FT) V = Trial Velocity, (FPS) S = Slope of the Channel, (FT/FT) n = Manning's "n" Coefficient Q = Trial Discharge, (CFS) B = Bottom Width of Channel, (FT) W = Top Width of Water in Channel, Z = Side Slope of Channel (Z:1) T= Shear Stress in Lb/SF Y= Wt of Water (62.4 Ib/cf) D= Depth Of Flow S= Slope Of Swale Min. Depth 0.98 FT Bottom Width 3 FT Max. Sloe 0.92% Side Slopes 3 : 1 Lining EM (DEHNR, 1988, DEHNR, 1993) DOUBLE D ENGINEERING, PLLC PROJECT NAME Timberland Ranch Hoke County, North Carolina 150 S. Page Street Southern Pines, NC 28387 LOCATION 910-684-8646 Hoke County, North Carolina DESIGN STORM: Area Runoff C Slope Condition LINING TYPE: Shear Stress: GY: FINISHED DIMENSIONS: CES: 8/31/2020 PROJECT NO DD2011 BY DTU CHECKED BY JLH Determine the MAXIMUM velocity, V, through the TYPICAL SECTION Use Trial & Error to make the flow depth, d, result with Q = Q25 10-YEAR Q10 = CIA 7.97 in/hr 0.383 AC 0.8 Q10: 2.44 cfs The velocity of the water entering a maintained veg Swale must be <5 fus d = 0.480 FT A = 1.17 FTA2 P = 4.04 FT n = 0.030 (DEHNR, 1993) R = 0.29 B = 1 FT Q = 2.45 CFS Z = 3 :1 V= 2.09 FPS S = 0,0092 FT/FT W = 3.88 FT LINING EM S&M SEED & MULCH T=YDS EM EXCELSIOR MAT T= 0.28 Lb/SF SM SYNTHETIC MAT RR RIPRAP (A,B,1,2) RM REVETMENT Q= Peak Discharge, (CFS) A = Cross -Sectional Area of Flow, P = Wetted Perimeter of the Flow, (FT) d = Maximum Depth of Water, (FT) R = Hydraulic Radius, (FT) V = Trial Velocity, (FPS) S = Slope of the Channel, (FT/FT) n = Manning's "n" Coefficient Q = Trial Discharge, (CFS) B = Bottom Width of Channel, (FT) W = Top Width of Water in Channel, Z = Side Slope of Channel (Z:1) T= Shear Stress in Lb/SF Y= Wt of Water (62.4 Ib/cf) D= Depth Of Flow S= Slope Of Swale Min. Depth 0.48 FT Bottom Width 1 FT Max. Sloe 0.92% Side Slopes 3 :1 Lining EM (DEHNR, 1988, DEHNR, 1993) DOUBLE D ENGINEERING, PLLC PROJECT NAME Timberland Ranch Hoke County, North Carolina DATE 8/31 /2020 PROJECT NO DD2011 BY DTU 150 S. Page Street Southern Pines, NC 28387 910-684-8646 LOCATION Hoke Countv, North Carolina ECKED BY tH SOLUTIONS DESIGN STORM Area Runoff C NOTE: MAXIMUM Slope Condition LINING TYPE: Shear Stress: TERMINOLOGY: DIMENSIONS: REFERENCES: Determine the MAXIMUM velocity, V, through the TYPICAL SECTION Use Trial & Error to make the flow depth, d, result with Q = Q25 10-YEAR Q10 = CIA 7.97 in/hr 5.519 AC 0.3 Q10: 13.20 cfs The velocity of the water entering a maintained veg swale must be <5 ft/s d = 0.930 FT A = 5.38 FTA2 P = 8.88 FT n = 0.030 (DEHNR, 1993) R = 0.61 B = 3 FT Q = 13.55 CFS Z = 3 :1 V= 2.52 FPS S = 0.0050 FT/FT W = 8.58 FT LINING EM S&M SEED & MULCH T=YDS EM EXCELSIOR MAT T= 0.29 Lb/SF SM SYNTHETIC MAT RR RIPRAP (A,B,1,2) RM REVETMENT Q= Peak Discharge, (CFS) A = Cross -Sectional Area of Flow, P = Wetted Perimeter of the Flow, (FT) d = Maximum Depth of Water, (FT) R = Hydraulic Radius, (FT) V = Trial Velocity, (FPS) S = Slope of the Channel, (FT/FT) n = Manning's "n" Coefficient Q = Trial Discharge, (CFS) B = Bottom Width of Channel, (FT) W = Top Width of Water in Channel, Z = Side Slope of Channel (Z:1) T= Shear Stress in Lb/SF Y= Wt of Water (62.4 Ib/cf) D= Depth Of Flow S= Slope Of Swale Min. Depth 0.93 FT Bottom Width 3 FT Max. Slope 0.50% Side Slopes 3 : 1 Lining EM (DEHNR, 1988; DEHNR, 1993) DATE 8/31 /2020 DOUBLE D ENGINEERING, PLLC 7Ranch PROJECT NO 7HokeCounty, DD2011 BY DTU 150 S. Page Street LOCATION CHECKED BY �JLH Southern Pines, NC 28387 910-684-8646 Hoke Countv. North Carolina SOLUTIONS DESIGN STORM Area Runoff C NOTE: MAXIMUM Slope Condition LINING TYPE: Shear Stress: TERMINOLOGY: FINISHED DIMENSIONS: REFERENCES Determine the MAXIMUM velocity, V, through the TYPICAL SECTION Use Trial & Error to make the flow depth, d, result with Q = Q25 10-YEAR Q10 = CIA 7.97 in/hr 0.334 AC 0.8 Q10: 2.13 cfs The velocity of the water entering a maintained veg Swale must be <5 ft/s d = 0.520 FT A = 1.33 FTA2 P = 4.29 FT n = 0.030 (DEHNR, 1993) R = 0.31 B = 1 FT Q = 2.14 CFS Z = 3 A V= 1.61 FPS S = 0.0050 FT/FT W = 4.12 FT LINING EM S&M SEED & MULCH T=YDS EM EXCELSIOR MAT T= 0.16 Lb/SF SM SYNTHETIC MAT RR RIPRAP (A,B,1,2) RM REVETMENT Q= Peak Discharge, (CFS) A = Cross -Sectional Area of Flow, P = Wetted Perimeter of the Flow, (FT) d = Maximum Depth of Water, (FT) R = Hydraulic Radius, (FT) V = Trial Velocity, (FPS) S = Slope of the Channel, (FT/FT) n = Manning's "n" Coefficient Q = Trial Discharge, (CFS) B = Bottom Width of Channel, (FT) W = Top Width of Water in Channel, Z = Side Slope of Channel (Z:1) T= Shear Stress in Lb/SF Y= Wt of Water (62.4 Ib/cf) D= Depth Of Flow S= Slope Of Swale Min. Depth 0.52 FT Bottom Width 1 FT Max. Sloe 0.50% Side Slopes 3 : 1 Lining EM (DEHNR, 1988; DEHNR, 1993)