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Home My WebLink AboutSW6221102_Design Calculations (Rip Rap)_20230510Project Name Riprap Dissipator #1 Date Ashley Heights Oct, 2022 DD Project No. Location D&L Engineering, PLLC DD221 l Hoke County, North Carolina 150 S. Page Street Calculated By Southern Pines, NC 28387 JLH (910) 684-8646 Checked By JLH (STORM DESIGN: 10 Year BACKGROUND: Use the E&S Control Planning & Design Manual, Section 8.06. REFERENCE: (NCDEHNR 1993) Step 1. Minimum Tailwater Condition Step 2. D-o = 24 in. D-o = 2.00 ft, 0-25 = 20.69 cfs d-50 = 0.4 ft. L-a = 14 ft. Step 3. 3'D-o = 6.00 ft. W = 16.00 ft. Step 4. d-max 0.60 ft. d-max 7 in. Step 5. Thickness = 0.90 ft. Thickness = 11 in. DESIGN DIMENSIONS: Pipe diameter in inches Pipe diameter in feet Pipe outlet (from drainage calculations) from Figure 8.06 a from Figure 8.06 a 3 times the outlet pipe diameter Pipe diameter + Apron length Maximum Stone Diameter (1.5'd-50) in inches Maximum Slone Diameter (1.5'd-50) in feet Min. Apron Thickness With Filter Fabric (1.5"d-max) in feet Min. Apron Thickness With Filter Fabric (1.5'd-max) in inches Apron Dimensions Riprap Length Width 3"D-o Thick 1 Class 14 16 6 24in. 1 TERMINOLOGY: Q10 = 10-Year Design Storm, Peak Discharge, (cfs) D-o = Pipe Diameter, (in. & ft.) d-50 = Mean Stone Diameter of Rip -Rap, (ft.) L-a = Length of Rip -Rap Apron, (ft.) 3`D-o = Width of Rip -Rap Apron @ Pipe Outlet, (ft.) W = Width of Rip -Rap Apron @ End of Apron, (ft.) d-max = Maximum Stone Diameter of Rip -Rap, (ft. & in.) Thickness = Thickness of Rip -Rap Apron With Filter Fabric, (ft. &in.) Project Name Riprap Dissipator #2 Date Ashley Heights Oct, 2022 DD Project No, Location D&L Engineering, PLLC DD2211 Hoke County, North Carolina 150 S. Page Street Calculated By Southern Pines, NC 28387 JLH (910) 684-8646 Checked By JLH ISTORM DESIGN: 10 Year (BACKGROUND: Use the E&S Control Planning & Design Manual, Section 8.06. (REFERENCE: (NCOEHNR. 1993) Step 1. Minimum Tailwater Condition Step 2. D-o = 48 in. Pipe diameter in inches D-o = 4.00 ft. Pipe diameter in feet 0-25 = 92.63 cfs Pipe outlet (from drainage calculations) d-50 = 0.9 ft. L-a = 26 ft. from Figure 8.06 a from Figure 8,06 a Step 3. 3*D-o = 12.00 ft. 3 times the outlet pipe diameter W = 30.00 ft. Pipe diameter + Apron length Step 4. d-max 1.35 ft. Maximum Slone Diameter (1.5*d-50) in inches d-max 16 in. Maximum Stone Diameter (1.5*d-50) in feet Step 5. Thickness = 2.03 ft. Thickness = 24 in. IDESIGN DIMENSIONS: Min. Apron Thickness With Filter Fabric (1.5*d-max) in feet Min. Apron Thickness With Filter Fabric (1.5*d-max) in inches Apron Dimensions Riprap Length Width 3*D-o Thick Class 26 30 12 36in. 2 TERMINOLOGY: Q10 = 10-Year Design Storm, Peak Discharge, (cfs) D-o = Pipe Diameter, (in. & ft.) d-50 = Mean Stone Diameter of Rip -Rap, (ft.) L-a = Length of Rip -Rap Apron, (ft.) 3*D-o = Width of Rip -Rap Apron @ Pipe Outlet, (ft.) W = Width of Rip -Rap Apron @ End of Apron, (ft.) d-max = Maximum Stone Diameter of Rip -Rap, (ft. & in.) Thickness = Thickness of Rip -Rap Apron With Filter Fabric, (ft. &in.) (Project Name Ashley Heights Riprap Dissipator #3 Location D&L Engineering, PLLC Hoke Counh,, forth Carolina 150 S. Page street Southern Pines, NC 28387 (910) 684-8646 STORM DESIGN: 10 Year BACKGROUND: Use the E&S Control Planning & Design Manual, Section 8.06 (REFERENCE: (NCDEHNR, 1993) Step 1. Minimum Tailwater Condition Step 2. D-o = 30 in. Pipe diameter in inches D-o = 2.50 ft. Pipe diameter in feet Q-25 = 27.12 cfs Pipe outlet (from drainage calculations) d-50 = 0.5 ft L-a = 16 ft, from Figure 8.06 a from Figure 8.06 a Step 3. 3*D-o = 7.50 ft. 3 times the outlet pipe diameter W = 18.50 ft. Pipe diameter + Apron length Step 4, d-max 0,75 ft. Maximum Stone Diameter (1.5`d-50) in inches d-max 9 in. Maximum Stone Diameter (1.5*d-50) in feet Step 5. Thickness = 1 13 ft. Thickness = 14 in. DESIGN DIMENSIONS: Date Oct, 2022 DID Project No. DD2211 Calculated By JLH Checked By JLH Min. Apron Thickness With Filter Fabric (1.5*d-max) in feet Min. Apron Thickness With Filter Fabric (1.5*d-max) in inches Apron Dimensions Riprap Length Width 3-D-o Thick Class 16 19 8 24in. 1 :TERMINOLOGY: Q10 = 10-Year Design Storm, Peak Discharge, (cfs) D-o = Pipe Diameter, (in. & ft.) d-50 = Mean Stone Diameter of Rip -Rap, (ft.) L-a = Length of Rip -Rap Apron, (ft.) 3*D-o = Width of Rip -Rap Apron @ Pipe Outlet, (ft.) W = Width of Rip -Rap Apron @ End of Apron, (ft.) d-max = Maximum Stone Diameter of Rip -Rap, (ft. & in.) Thickness = Thickness of Rip -Rap Apron With Filter Fabric. (ft. &in.) Project Name Riprap Dissipator #4 Date Ashley Heights Oct, 2022 DO Project No. Location D&L Engineering, PLLC DD2211 Hoke County, North Carolina 150 S. Page Street Calculated By Southern Pines, NC 28387 .ILH (910) 684-8646 Checked By JLH STORM DESIGN: 10 Year BACKGROUND: Use the E&S Control Planning & Design Manual, Section 8.06. REFERENCE: (NCDEHNR, 1993) Step 1. Minimum Tailwater Condition Step 2. D-o = 24 in. D-o = 2.00 ft. 0-25 = 12.73 cfs d-50 = 0.4 ft. L-a = 14 ft. Step 3. 3'D-o = 6.00 ft. W = 16.00 ft. Step 4. d-max 0.60 ft. d-max 7 in. Step 5. Thickness = 0.90 ft. Thickness = 11 in. DESIGN DIMENSIONS: Pipe diameter in inches Pipe diameter in feet Pipe outlet (from drainage calculations) from Figure 8.06 a from Figure 8.06 a 3 times the outlet pipe diameter Pipe diameter + Apron length Maximum Stone Diameter (1.5*d-50) in inches Maximum Stone Diameter (1.5*d-50) in feet Min. Apron Thickness With Filter Fabric (1.5"d-rnax) in feet Min. Apron Thickness With Filter Fabric (1.5"d-max) in inches Apron Dimensions Rlprap Class Length Width 3-D-o Thick 14 16 6 241n. 1 NOLOGY: Q10 = 10-Year Design Storm, Peak Discharge, (cfs) D-o = Pipe Diameter, (in. & ft.) d-50 = Mean Stone Diameter of Rip -Rap, (ft.) L-a = Length of Rip -Rap Apron, (ft.) 3*D-o = Width of Rip -Rap Apron @ Pipe Outlet, (ft.) W = Width of Rip -Rap Apron @ End of Apron, (ft.) d-max = Maximum Stone Diameter of Rip -Rap, (ft. & in.) Thickness = Thickness of Rip -Rap Apron With Filter Fabric, (ft. &in.) Project Name Riprap Dissipator #5 Date Ashley Heights May, 2022 DID Project No. Location D&L Engineering, PLLC Do22 t I Hoke County, North Carolina 150 S. Page Street Calculated By Southern Pines, NC 28387 JLH (910) 684-8646 Checked By JLH STORM DESIGN: 10 Year BACKGROUND: Use the E&S Control Planning & Design Manual, Section 8.06. REFERENCE: (NCDEHNR, 1993) Step 1. Minimum Tailwater Condition Step 2. D-o = 24 in. Pipe diameter in inches D-o = 2.00 ft. Pipe diameter in feet Q-25 = 3,43 cfs Pipe outlet (from drainage calculations) d-50 = 0.4 ft. from Figure 8.06 a L-a = 12 ft. from Figure 8.06 a Step 3. 3*D-o = 6,00 ft. 3 times the outlet pipe diameter W = 14.00 ft. Pipe diameter + Apron length Step 4. d-max 0.60 ft. Maximum Stone Diameter (1.5*d-50) in inches d-max 7 in. Maximum Stone Diameter (1.5*d-50) in feet Step 5. Thickness = 0.90 ft. Thickness = 11 in. DESIGN DIMENSIONS: Min. Apron Thickness With Filler Fabric (1.5*d-max) in feet Min, Apron Thickness With Filter Fabric (1.5*d-max) in inches Apron Dimensions Riprap Length Width 3*D-o Thick Class 12 14 1 6 241n. 1 TERMINOLOGY: Q10 = 10-Year Design Storm. Peak Discharge, (cfs) D-o = Pipe Diameter, (in. & ft.) d-50 = Mean Stone Diameter of Rip -Rap, (ft.) L-a = Length of Rip -Rap Apron, (ft.) 3*D-o = Width of Rip -Rap Apron @ Pipe Outlet, (ft.) W = Width of Rip -Rap Apron @ End of Apron, (ft.) d-max = Maximum Stone Diameter of Rip -Rap, (ft. & in.) Thickness = Thickness of Rip -Rap Apron With Filter Fabric, (ft. &in.) Project Name Riprap Dissipator #6 Date Ashley Heights May, 2022 DD Project No. Location D&L Engineering, PLLC DD2211 Hoke County, North Carolina 150 S. Page Street Calculated By Southern Pines, NC 28387 J[fH (910)684-8646 Checked By JLH STORM DESIGN: 10 Year BACKGROUND: Use the E&S Control Planning & Design Manual. Section 8.06. REFERENCE: (NCDEHNR, 1993) Step 1. Minimum Tailwater Condition Step 2. D-o = 24 in. Pipe diameter in inches D-o = 2.00 ft. Pipe diameter in feet Q-25 = 21.83 cfs Pipe outlet (from drainage calculations) d-50 = 0.4 ft. from Figure 8.06 a L-a = 14 ft. from Figure 8.06 a Step 3. 3*D-o = 6.00 ft. 3 times the outlet pipe diameter W = 16.00 ft. Pipe diameter + Apron length Step 4, d-max 0.60 ft. Maximum Stone Diameter (1.5*d-50) in inches d-max 7 in. Maximum Stone Diameter (1.5*d-50) in feet Step 5. Thickness = 0.90 ft. Min. Apron Thickness With Filter Fabric (1.5*d-max) in feet Thickness = 11 in. Min. Apron Thickness With Filter Fabric (1.5*d-max) in inches IDESIGN DIMENSIONS: Apron Dimensions Riprap Glass Len th Width 3-D-o Thick 14 16 6 24in. 1 TERMINOLOGY: Q10 = 10-Year Design Storm, Peak Discharge, (cfs) D-o = Pipe Diameter, (in. & ft.) d-50 = Mean Stone Diameter of Rip -Rap, (ft.) L-a = Length of Rip -Rap Apron, (ft.) 3*D-o = Width of Rip -Rap Apron @ Pipe Outlet, (ft.) W = Width of Rip -Rap Apron @ End of Apron, (ft.) d-max = Maximum Stone Diameter of Rip -Rap, (ft. & in.) Thickness = Thickness of Rip -Rap Apron With Filter Fabric, (ft. &in.)