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HomeMy WebLinkAboutSW6230806_Design Calculations_20240516 Brookwood Subdivision Phase 4 Moore County, NC Low-density Swale and Rip Rap Calculations %%%%%%%is.%%%%%I fill • . 0� : Q SEAL� 9<i 056498 •,,�rSGN D MP•�'�� Prepared by: Engineering Landscape Architecture `� Surveying r 140 Aqua Shed Court Aberdeen, NC 28315 License # P-1095 May, 2024 Permanent Diversion Swale Design Date May, 2024 Project Name Project No. By Brookwood Subdivision - Phase 4 TSB-18.01 r Location TDB Moore County, North Carolina Checked By PAP Rainfall Intensity(in/hr) Storm Design Used 2 year 10 year 25 year 100 year 25 year 8.83 6.28 8.00 8.83 9.91 * based on 5 min. ToC Mr Calculating Run-off Coefficients ('C') Surface Type Percentages Swale Unimp. Asphalt Concrete Brick Roof Roof Sandy Soils Heavy Soils Wooded Areas Area Area Area inclined Flat <2% 2-7% >7% <2% 2-7% 1 >7% Areas Values 1 0.35 0.95 0.95 0.85 1.00 0.90 0.10 0.15 0.20 0.15 0.20 0.30 0.15 EXAMPLE 40% 15% 33% 12% PH4-SW-01 10% 10% 80% PH4-SW-02 _ 10% 80% 10% PH4-SW-03 40% 27% 33% PH4-SW-04 10% 10% 80% PH4-SW-05 40% 27% 33% PH4-SW-06 40% 27% 33% PH4-SW-07 40% 27% 33% PH4-SW-08 33% 20% 47% PH4-SW-09 40% 27% 33% PH4-SW-10 40% 27% 33% Calculating Swale Size Design Check Drain. Drain. Calculated Use Q n Side Depth Bottom Design/ Channel Swale Area Area Cc Cc (cfs) Slope Width Trial cfs Slope EXAMPLE 43,560 sf 1.00 ac. 0.57 0.57 5.06 0.030 3:1 0.78 ft 0.00 ft Increase 1.00% PH4-SW-01 69,022 sf 1.58 ac. 0.27 0.30 4.20 0.030 3:1 0.34 ft 4.00 ft OK 1.50% PH4-SW-02 95,854 sf 2.20 ac. 0.24 0.30 5.83 0.030 3:1 0.40 ft 4.00 ft OK 1.50% PH4-SW-03 10,951 sf 0.25 ac. 0.49 0.49 1.08 0.030 3:1 0.18 ft 4.00 ft OK 1.50% PH4-SW-04 29,853 sf 0.69 ac. 0.27 0.30 1.82 0.030 3:1 0.21 ft 4.00 ft OK 1.50% PH4-SW-05 18,602 sf 0.43 ac. 0.49 0.49 1.83 0.030 3:1 0.19 ft 4.00 ft OK 2.68% PH4-SW-06 33,719 sf 0.77 ac. 0.49 0.49 3.33 0.030 3:1 0.27 ft 4.00 ft OK 2.68% PH4-SW-07 7,324 sf 0.17 ac. 0.49 0.49 0.72 0.030 3:1 0.11 ft 4.00 ft OK 2.00% PH4-SW-08 5,505 sf 0.13 ac. 0.44 _ 0.44 0.49 0.030 3:1 0.10 ft 4.00 ft OK 2.00% PH4-SW-09 23,035 sf 0.53 ac. 0.49 0.49 2.27 0.030 3:1 0.23 ft 4.00 ft OK 2.00% PH4-SW-10 38,829 sf 0.89 ac. 0.49 0.49 3.83 0.030 3:1 0.29 ft 4.00 ft OK 2.00% Calculating Swale Size Lining Types X-section Wetted Hydraulic Trial Trial Top Width Shear Calculated Straw Straw w/Tack Coat Area of Perimeter Radius Discharge Velocity of Channel Stress Lining S75 Straw S75 Straw with Net Swale Flow (sf) Flow (ft) (ft) (cfs) (fps) (ft) (Ib/sf) Type P300 P300 Polypropylene EXAMPLE 1.83 sf 4.93 ft 0.37 ft 4.67 cfs 2.56 ft/sec 4.68 ft 0.49 lb/sf S75 Straw P550 P500 Polypropylene PH4-SW-01 1.71 sf _ 6.15 ft 0.28 ft 4.42 cfs 2.59 ft/sec 6.04 ft 0.32 lb/sf S75 Straw Riprap A Class A Riprap PH4-SW-02 2.08 sf 6.53 ft 0.32 ft 5.90 cfs 2.84 ft/sec 6.40 ft 0.37 lb/sf S75 Straw Riprap B Class B Riprap PH4-SW-03 0.82 sf 5.14 ft 0.16 ft 1.46 cfs 1.79 ft/sec _ 5.08 ft 0.17 lb/sf S75 Straw Riprap 1 Class 1 Riprap PH4-SW-04 0.97 sf 5.33 ft 0.18 ft 1.90 cfs 1.96 ft/sec 5.26 ft 0.20 lb/sf S75 Straw PH4-SW-05 0.87 sf 5.20 ft 0.17 ft 2.14 cfs 2.47 ft/sec 5.14 ft 0.32 lb/sf S75 Straw PH4-SW-06 1.30 sf 5.71 ft 0.23 ft 3.94 cfs 3.03 ft/sec 5.62 ft 0.45 lb/sf S75 Straw PH4-SW-07 0.48 sf 4.70 ft 0.10 ft 0.73 cfs 1.53 ft/sec 4.66 ft 0.14 lb/sf S75 Straw PH4-SW-08 0.43 sf 4.63 ft 0.09 ft 0.62 cfs 1.44 ft/sec 4.60 ft 0.12 lb/sf S75 Straw PH4-SW-09 1.08 sf 5.45 ft 0.20 ft 2.57 cfs 2.38 ft/sec 5.38 ft 0.29 lb/sf S75 Straw PH4-SW-10 1.41 sf 5.83 ft 0.24 ft 3.85 cfs 2.73 ft/sec 5.74 ft 0.36 lb/sf S75 Straw An Construction Schedule Minimum Bottom Side Top Channel Channel Depth Width Slope Width Slope Lining Swale (ft) (ft) (ft) % PH4-SW-01 1.50 ft 4.00 ft 3:1 13.00 ft 1.50% S75 Straw PH4-SW-02 1.50 ft 4.00 ft 3:1 13.00 ft 1.50% S75 Straw PH4-SW-03 1.50 ft 4.00 ft 3:1 13.00 ft _ 1.50% S75 Straw PH4-SW-04 1.50 ft 4.00 ft 3:1 13.00 ft _ 1.50% S75 Straw PH4-SW-05 1.50 ft 4.00 ft 3:1 13.00 ft 2.68% S75 Straw PH4-SW-06 1.50 ft 4.00 ft 3:1 13.00 ft 2.68% S75 Straw PH4-SW-07 1.50 ft 4.00 ft 3:1 13.00 ft 2.00% S75 Straw PH4-SW-08 1.50 ft 4.00 ft 3:1 13.00 ft 2.00% S75 Straw PH4-SW-09 1.50 ft 4.00 ft 3:1 13.00 ft 2.00% S75 Straw PH4-SW-10 1.50 ft 4.00 ft 3:1 13.00 ft 2.00% S75 Straw Intensity information tab should be updated per local requirements, current setting is from NOAA website for the project area. indicates example user inputted data, do not delete. indicates user provided data, all else is calculated. Date Permanent Diversion Swale Design May,2024 Project Name Project No. Brookwood Subdivision-Phase 4 TSB-18.01 ,�I By 1 Location TDB Moore County,North Carolina Checked By PAP Rainfall Intensity(in/hr) Storm Design Used 2 year 10 year 25 year 100 year WM= 8.83 6.28 8.00 8.83 9.91 *based on 5 min.ToC Calculating Run-off Coefficients('C') Surface Type Percentages Swale Unimp. Asphalt Concrete Brick Roof Roof Sandy Soils Heavy Soils Wooded Areas Area Area Area inclined Flat <2% 2-7% >7% <2% 2-7% >7% Areas Values 0.35 0.95 0.95 0.85 1.00 0.90 0.10 0.15 0.20 0.15 0.20 0.30 0.15 EXAMPLE11=.140% 15% 33% 12% PH4-SW-11 40% 27% 33% PH4-SW-12 20% 20% 60% PH4-SW-13 10% 80% 10% PH4-SW-14 40% 27% 33% PH4-SW-15 15% 70% 15% PH4-SW-16 50% 40% 10% PH4-SW-17 10% 80% 10% Calculating Swale Size Design Check Drain. Drain. Calculated Use Q n Side Depth Bottom Design/ Channel Swale Area Area Cc Cc (cfs) Slope Width Trial cfs Slope EXAMPLE 43,560 sf 1.00 ac. 0.57 0.57 5.06 0.030 3:1 0.78 ft 0.00 ft Increase 1.00% PH4-SW-11 7,284 sf 0.17 ac. 0.49 _ 0.49 0.72 0.030 3:1 0.32 ft 0.00 ft OK 3.39% PH4-SW-12 11,578 sf 0.27 ac. 0.34 0.34 0.80 _ 0.030 3:1 0.48 ft 0.00 ft OK 3.39% PH4-SW-13 78,500 sf 1.80 ac. 0.24 0.30 4.77 0.030 3:1 0.70 ft 0.00 ft OK 2.22% PH4-SW-14 26,821 sf 0.62 ac. 0.49 0.49 2.64 _ 0.030 3:1 0.50 ft 0.00 ft OK 4.22% PH4-SW-15 183,195 sf 4.21 ac. 0.28 0.30 11.14 0.030 3:1 0.96 ft 0.00 ft OK 2.00% PH4-SW-16 105,918 sf 2.43 ac. 0.56 0.56 11.92 _ 0.030 3:1 0.75 ft 1.00 ft OK 3.19% PH4-SW-17 24,673 sf 0.57 ac. 0.24 0.30 1.50 0.030 3:1 0.51 ft 0.00 ft OK 1.00% Calculating Swale Size Lining Types X-section Wetted Hydraulic Trial Trial Top Width Shear Calculated Straw Straw w/Tack Coat Area of Perimeter Radius Discharge Velocity of Channel Stress Lining S75 Straw S75 Straw with Net Swale Flow(sf) Flow(ft) (ft) (cfs) (fps) (ft) (lb/sf) Type P300 P300 Polypropylene EXAMPLE 1.83 sf 4.93 ft 0.37 ft 4.67 cfs 2.56 ft/sec 4.68 ft 0.49 lb/sf B. S75 Straw P550 P500 Polypropylene PH4-SW-11 0.31 sf 2.02 ft 0.15 ft 0.80 cfs 2.60 ft/sec 1.92 ft 0.68 lb/sf S75 Straw Riprap A Class A Riprap PH4-SW-12 0.69 sf 3.04 ft 0.23 ft 2.36 cfs 3.41 ft/sec 2.88 ft 1.02 lb/sf S75 Straw Riprap B Class B Riprap PH4-SW-13 1.47 sf 4.43 ft 0.33 ft 5.22 cfs 3.55 ft/sec 4.20 ft 0.97 lb/sf S75 Straw Riprap 1 Class 1 Riprap PH4-SW-14 0.75 sf 3.16 ft 0.24 ft 2.93 cfs 3.91 ft/sec 3.00 ft 1.32 lb/sf S75 Straw PH4-SW-15 2.76 sf 6.07 ft 0.46 ft 11.49 cfs 4.16 ft/sec 5.76 ft 1.20 lb/sf S75 Straw PH4-SW-16 2.44 sf 5.74 ft 0.42 ft 12.21 cfs 5.00 ft/sec 5.50 ft 1.49 lb/sf S75 Straw PH4-SW-17 0.78 sf 3.23 ft 0.24 ft 1.50 cfs 1.93 ft/sec 3.06 ft 0.32 lb/sf S75 Straw Construction Schedule Minimum Bottom Side Top Channel Channel Depth Width Slope Width Slope Lining Swale (ft) (ft) (ft) % _ PH4-SW-11 0.33 ft 0.00 ft 3:1 1.98 ft 3.39% S75 Straw PH4-SW-12 0.50 ft 0.00 ft 3:1 3.00 ft 3.39% S75 Straw PH4-SW-13 0.60 ft 0.00 ft 3:1 3.60 ft 2.22% S75 Straw PH4-SW-14 0.50 ft 0.00 ft 3:1 3.00 ft 4.22% S75 Straw PH4-SW-15 1.00 ft 0.00 ft 3:1 6.00 ft 2.00% S75 Straw PH4-SW-16 1.00 ft 1.00 ft 3:1 7.00 ft 3.19% S75 Straw PH4-SW-17 0.60 ft 0.00 ft 3:1 3.60 ft 1.00% S75 Straw Intensity information tab should be updated per local requirements,current setting is from NOAA website for the project area. indicates example user inputted data,do not delete. indicates user provided data,all else is calculated. Date Permanent Diversion Swale Design May., 2024 i[_i KC Project Name Project No. By Brookwood Subdivision - Phase 4 TSB-18.01 Location TDB Moore County, North Carolina Checked By PAP Rainfall Intensity(in/hr) Storm Design Used 2 year 10 year 25 year 100 year 25 year 8.83 6.28 8.00 8.83 9.91 * based on 5 min. ToC Mr Calculating Run-off Coefficients ('C') 1111 Surface Type Percentages I Swale Unimp.Areas Asphalt Concrete Brick Roof Roof Sandy Soils Heavy Soils Wooded Area Area Area inclined Flat <2% 2-7% >7% Heavy 2-7% >7% Areas 1 Values 0.35 0.95 0.95 0.85 1.00 0.90 0.10 0.15 0.20 0.15 I 0.20 I 0.30 0.15 EXAMPLE = 40% 15% 1 33% 12% PH4-SW-18 50% 50% PH4-SW-19 80% 20% PH4-SW-20 30% 37% 33% PH4-SW-21 32% 10% 58% PH-SW-22 100% MI lr Calculating Swale Size III Design Check Drain. Drain. Calculated Use Q n Side Depth Bottom Design/ Channel Swale Area Area Cc Cc (cfs) Slope Width Trial cfs Slope EXAMPLE 43,560 sf 1.00 ac. 0.57 0.57 5.06 0.030 3:1 0.78 ft 0.00 ft Increase 1.00% PH4-SW-18 67,491 sf 1.55 ac. 0.58 0.58 7.87 0.030 3:1 1.00 ft 2.00 ft OK 1.08% PH4-SW-19 110,800 sf 2.54 ac. 0.16 0.30 6.74 0.030 3:1 0.50 ft 2.00 ft OK 3.50% PH4-SW-20 75,633 sf 1.74 ac. 0.41 0.41 6.23 0.030 3:1 1.00 ft 2.00 ft OK 0.93% PH4-SW-21 41,215 sf 0.95 ac. 0.44 0.44 3.63 0.030 3:1 1.00 ft 2.00 ft OK 2.00% PH-SW-22 17,158 sf 0.39 ac. 0.20 0.30 1.04 0.030 3:1 1.00 ft 2.00 ft OK 1.10% iWir = Calculating Swale Size V Lining Types X-section Wetted Hydraulic Trial Trial Top Width Shear Calculated Straw Straw w/Tack Coat Area of Perimeter Radius Discharge Velocity of Channel Stress Lining S75 Straw S75 Straw with Net Swale Flow (sf) Flow (ft) (ft) (cfs) (fps) (ft) (lb/sf) Type P300 P300 Polypropylene EXAMPLE 1.83 sf 4.93 ft 1 0.37 ft 4.67 cfs 2.56 ft/sec 4.68 ft 0.49 lb/sf S75 Straw P550 P500 Polypropylene PH4-SW-18 1 5.00 sf 8.32 ft 0.60 ft 18.37 cfs 3.67 ft/sec 8.00 ft 0.67 lb/sf S75 Straw Riprap A Class A Riprap PH4-SW-19 1.75 sf 5.16 ft 0.34 ft 7.91 cfs 4.52 ft/sec 5.00 ft 1.09 lb/sf S75 Straw Riprap B Class B Riprap PH4-SW-20 5.00 sf 8.32 ft 0.60 ft 17.05 cfs 3.41 ft/sec 8.00 ft 0.58 lb/sf S75 Straw Riprap 1 Class 1 Riprap PH4-SW-21 5.00 sf 8.32 ft 0.60 ft 25.00 cfs 5.00 ft/sec 8.00 ft 1.25 lb/sf S75 Straw PH-SW-22 5.00 sf 8.32 ft 0.60 ft 18.54 cfs 3.71 ft/sec 8.00 ft 0.69 lb/sf S75 Straw 11 11 1 ' 1 Minimum Bottom Side Top Channel Channel Depth Width Slope Width Slope Lining Swale (ft) (ft) (ft) % PH4-SW-18 1.00 ft 2.00 ft 3:1 8.00 ft 1.08% I S75 Straw PH4-SW-19 1.00 ft 2.00 ft 3:1 8.00 ft 3.50% S75 Straw PH4-SW-20 1.00 ft 2.00 ft 3:1 8.00 ft 0.93% S75 Straw PH4-SW-21 1.00 ft 2.00 ft 3:1 8.00 ft _ 2.00% S75 Straw PH-SW-22 1.00 ft 2.00 ft 3:1 8.00 ft 1.10% S75 Straw Intensity information tab should be updated per local requirements, current setting is from NOAA website for the project area. indicates example user inputted data, do not delete. indicates user provided data, all else is calculated. -1.111 Riprap Velocity Dissipator Pads DATE May, 2024 PROJECT NAME Brookwood Subdivision - Phase 4 TSB-18.01 nit LOCATION PROJECT NO BY r -11Moore County, North Carolina TDB CHECKED BY PAP I STORM DESIGN: 25 Year BACKGROUND: Use the E&S Control Planning & Design Manual, Section 8.06. REFERENCE: (NCDEHNR, 1993) Dissipator Pipe Size (D-o) Apron Calculated Max Stone Diameter Apron Thickness Pad FES No. Flow d-50 Length 3*D-o Width Inches Feet g Feet Inches Feet Inches 1 PH4-FES-03 18 in. 1.50 ft. 5.60 cfs 0.4 ft. 9 ft. 4.50 ft. 10.50 ft. 0.60 ft. 7 in. 0.90 ft. 11 in. 2 PH4-FES-08 30 in. 2.50 ft. 30.75 cfs 0.5 ft. 16 ft. 7.50 ft. 18.50 ft. 0.75 ft. 9 in. 1.13 ft. 14 in. 3 PH4-FES-10 48 in. 4.00 ft. 232.70 cfs 1.6 ft. 26 ft. 12.00 ft. 30.00 ft. 2.40 ft. 29 in. 3.60 ft. 43 in. 4 POND 4 FES 15 in. 1.25 ft. 6.11 cfs 0.3 ft. 8 ft. 3.75 ft. 9.25 ft. 0.45 ft. 5 in. 0.68 ft. 8 in. 5 SW-13 18 i n. 1.50 ft. 4.77 cfs 0.3 ft. 9 ft. 4.50 ft. 10.50 ft. 0.45 ft. 5 i n. 0.68 ft. 8 i n. 6 SW-14 12 in. 1.00 ft. 2.64 cfs 0.2 ft. 6 ft. 3.00 ft. 7.00 ft. 0.30 ft. 4 in. 0.45 ft. 5 in. 7 SW-15 24 in. 2.00 ft. 11.14 cfs 0.4 ft. 15 ft. 6.00 ft. 17.00 ft. 0.60 ft. 7 in. 0.90 ft. 11 in. 8 SW-16 24 in. 2.00 ft. 11.92 cfs 0.4 ft. 15 ft. 6.00 ft. 17.00 ft. 0.60 ft. 7 in. 0.90 ft. 11 in. 9 SW-17 12 in. 1.00 ft. 1.50 cfs 0.2 ft. 6 ft. 3.00 ft. 7.00 ft. 0.30 ft. 4 in. 0.45 ft. 5 in. Apron Construction Dimensions Riprap TERMINOLOGY: Pad Length Width 3*D-o Thick Class 1 9 ft. 11 ft. 5 ft. 18in. B Q25 = 25-Year Design Storm, Peak Discharge, (cfs) 2 16 ft. 19 ft. 8 ft. 18in. 1 d-50 = Mean Stone Diameter of Rip-Rap, (ft.) 3 26 ft. 30 ft. 12 ft. 36in. 2 L-a = Length of Rip-Rap Apron, (ft.) 4 8 ft. 10 ft. 4 ft. 12in. A 3*D-o = Width of Rip-Rap Apron @ Pipe Outlet, (ft.) 5 9 ft. 11 ft. 5 ft. 12in. A W = Width of Rip-Rap Apron @ End of Apron, (ft.) 6 6 ft. 7 ft. 3 ft. 12in. A d-max = Maximum Stone Diameter of Rip-Rap, (ft. & in.) 7 15 ft. 17 ft. 6 ft. 18in. B Thickness = Thickness of Rip-Rap Apron With Filter Fabric, (ft. &in.) 8 15 ft. 17 ft. 6 ft. 18in. B 9 6 ft. 7 ft. 3 ft. 12in. A -1.111 Riprap Velocity Dissipator Pads DATE May, 2024 PROJECT NAME Brookwood Subdivision - Phase 4 TSB-18.01 LOCATION PROJECT NO BY r �� Moore County, North Carolina TDB CHECKED BY PAP I STORM DESIGN: 25 Year BACKGROUND: Use the E&S Control Planning & Design Manual, Section 8.06. REFERENCE: (NCDEHNR, 1993) Dissipator Pipe Size (D-o) Apron Calculated Max Stone Diameter Apron Thickness Pad FES No. Flow d-50 Length 3*D-o Width Inches Feet g Feet Inches Feet Inches 1 SW-18 36 in. 3.00 ft. 7.87 cfs 0.6 ft. 20 ft. 9.00 ft. 23.00 ft. 0.90 ft. 11 in. 1.35 ft. 16 in. 2 SW-19 18 i n. 1.50 ft. 6.74 cfs 0.3 ft. 9 ft. 4.50 ft. 10.50 ft. 0.45 ft. 5 i n. 0.68 ft. 8 i n. 3 SW-20 36 in. 3.00 ft. 6.23 cfs 0.6 ft. 20 ft. 9.00 ft. 23.00 ft. 0.90 ft. 11 in. 1.35 ft. 16 in. 4 SW-21 36 in. 3.00 ft. 3.63 cfs 0.6 ft. 20 ft. 9.00 ft. 23.00 ft. 0.90 ft. 11 in. 1.35 ft. 16 in. 5 SW-22 36 in. 3.00 ft. 1.04 cfs 0.6 ft. 20 ft. 9.00 ft. 23.00 ft. 0.90 ft. 11 in. 1.35 ft. 16 in. 6 7 8 9 I Apron Construction Dimensions Riprap TERMINOLOGY: Pad Length Width 3*D-o Thick Class 1 20 ft. 23 ft. 9 ft. 18in. 1 Q25 = 25-Year Design Storm, Peak Discharge, (cfs) 2 9 ft. 11 ft. 5 ft. 12in. A d-50 = Mean Stone Diameter of Rip-Rap, (ft.) 3 20 ft. 23 ft. 9 ft. 18in. 1 L-a = Length of Rip-Rap Apron, (ft.) 4 20 ft. 23 ft. 9 ft. 18in. 1 3*D-o = Width of Rip-Rap Apron @ Pipe Outlet, (ft.) 5 20 ft. 23 ft. 9 ft. 18in. 1 W = Width of Rip-Rap Apron @ End of Apron, (ft.) 6 d-max = Maximum Stone Diameter of Rip-Rap, (ft. & in.) 7 Thickness = Thickness of Rip-Rap Apron With Filter Fabric, (ft. &in.) 8 9 \ \ /,\ ,, i % '�i / I o pU '_ a -'— I=—` I I :�\ \ i' x�' I B�/O l 1 \ . 5) �J%` O x REVISIONS a E D SYM. 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