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Home My WebLink AboutSW5210701_Response To Comments_20210818CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 23-Apr-21 CALCULATED BY: SCB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION TD 1.1 AREA = 1.65 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 4.20 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.078 (ft/ft) Z REQUID= 0.35 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.55 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 2.7 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.91 (sq/ft) WP = 3.48 (ft) R = 0.26 Z ACTUAL = 0.37 MUST BE > THAN Z REQ'D. _ V = 4.85 (ft/sec) LINING REQUIREMENTS LINING: TURF REINF. MATTING COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.35 0.94 (#/sq ft) 2.68 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 3.30 ft (DEPTH BASED ON CAPACITY CALCS) 0.55 ft \ / (BOTTOM WIDTH) 3 10 o CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 23-Apr-21 CALCULATED BY: SCB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION TD 1.2 AREA = C = Tc = INTENSITY = FLOW = 28.76 0.35 15.00 7.27 (in/hr) 73.18 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.022 (ft/ft) Z REQUID= 11.59 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 1.15 (ft) WIDTH = 8 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.6 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 13.17 (sq/ft) WP = 15.27 (ft) R = 0.86 Z ACTUAL = 11.93 MUST BE > THAN Z REQ'D. _ V = 5.72 (ft/sec) LINING REQUIREMENTS LINING: COCONUT BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 11.59 0.94 (#/sq ft) 1.58 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 14.90 ft (DEPTH BASED ON CAPACITY CALCS) 1.15 ft \ / (BOTTOM WIDTH) go o CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 23-Apr-21 CALCULATED BY: SCB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION TD 1.3 AREA = 2.26 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 5.75 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.035 (ft/ft) Z REQUID= 0.73 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.72 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.6 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 1.56 (sq/ft) WP = 4.55 (ft) R = 0.34 Z ACTUAL = 0.76 MUST BE > THAN Z REQ'D. _ V = 3.86 (ft/sec) LINING REQUIREMENTS LINING: COCONUT BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.73 1.72 (#/sq ft) 1.55 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 4.32 ft (DEPTH BASED ON CAPACITY CALCS) 0.72 ft \ / (BOTTOM WIDTH) 3 10 o CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 23-Apr-21 CALCULATED BY: SCB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION TD 2.1 AREA = 0.25 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 0.64 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.069 (ft/ft) Z REQUID= 0.06 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.35 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.5 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.37 (sq/ft) WP = 2.21 (ft) R = 0.17 Z ACTUAL = 0.11 MUST BE > THAN Z REQ'D. _ V = 3.38 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) N w. 1.82 (#/sq ft) 1.51 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 2.10 ft (DEPTH BASED ON CAPACITY CALCS) _ 0.35 ft \ / (BOTTOM WIDTH) 3 10 o CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 23-Apr-21 CALCULATED BY: SCB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION TD 2.2 AREA = 2.04 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 5.19 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.048 (ft/ft) Z REQUID= 0.56 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.65 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.9 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 1.27 (sq/ft) WP = 4.11 (ft) R = 0.31 Z ACTUAL = 0.58 MUST BE > THAN Z REQ'D. _ V = 4.26 (ft/sec) LINING REQUIREMENTS LINING: COCONUT BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.56 1.82 (#/sq ft) 1.95 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 3.90 ft (DEPTH BASED ON CAPACITY CALCS) 0.65 ft \ / (BOTTOM WIDTH) 3 10 o CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 23-Apr-21 CALCULATED BY: SCB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION TD 2.3 AREA = C = Tc = INTENSITY = FLOW = 5.73 0.35 5.00 7.27 (in/hr) 14.58 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.052 (ft/ft) Z REQUID= 1.50 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.60 (ft) WIDTH = 4 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.9 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 3.48 (sq/ft) WP = 7.79 (ft) R = 0.45 Z ACTUAL = 2.03 MUST BE > THAN Z REQ'D. _ V = 5.67 (ft/sec) LINING REQUIREMENTS LINING: COCONUT BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 1.50 0.78 (#/sq ft) 1.95 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 7.60 ft (DEPTH BASED ON CAPACITY CALCS) 0.60 ft \ / (BOTTOM WIDTH) 4.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 23-Apr-21 CALCULATED BY: SCB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION TD 3.1 AREA = C = Tc = INTENSITY = FLOW = 5.56 0.35 5.00 7.27 (in/hr) 14.15 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.010 (ft/ft) Z REQUID= 3.32 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 1.30 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 0.8 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 5.07 (sq/ft) WP = 8.22 (ft) R = 0.62 Z ACTUAL = 3.67 MUST BE > THAN Z REQ'D. _ V = 3.08 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 3.32 0.62 (#/sq ft) 0.81 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 7.80 ft (DEPTH BASED ON CAPACITY CALCS) _ 1.30 ft \ / (BOTTOM WIDTH) 3 10 o CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 24-Jun-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 1 AREA = 2.03 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 5.17 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.020 (ft/ft) Z REQUID= 0.86 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.70 (ft) WIDTH = 1 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 0.9 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 2.17 (sq/ft) WP = 5.43 (ft) R = 0.40 Z ACTUAL = 1.18 MUST BE > THAN Z REQ'D. _ V = 3.27 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.62 (#/sq ft) 0.87 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 5.20 ft (DEPTH BASED ON CAPACITY CALCS) _ 0.70 ft \ / (BOTTOM WIDTH) 1.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 24-Jun-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 2 AREA = 0.70 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 1.78 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.100 (ft/ft) Z REQUID= 0.13 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.30 (ft) WIDTH = 1 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.9 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.57 (sq/ft) WP = 2.90 (ft) R = 0.20 Z ACTUAL = 0.19 MUST BE > THAN Z REQ'D. _ V = 4.55 (ft/sec) LINING REQUIREMENTS LINING: COCONUT BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.13 0.75 (#/sq ft) 1.87 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 2.80 ft (DEPTH BASED ON CAPACITY CALCS) 0.30 ft \ / (BOTTOM WIDTH) 1.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 24-Jun-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 3 AREA = 0.15 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 0.38 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.100 (ft/ft) Z REQUID= 0.03 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.20 (ft) WIDTH = 1 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.2 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.32 (sq/ft) WP = 2.26 (ft) R = 0.14 Z ACTUAL = 0.09 MUST BE > THAN Z REQ'D. _ V = 3.65 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.03 0.075 (#/sq ft) 1.25 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 2.20 ft (DEPTH BASED ON CAPACITY CALCS) _ 0.20 ft \ / (BOTTOM WIDTH) 1.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 24-Jun-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 4 AREA = 0.40 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 1.02 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.100 (ft/ft) Z REQUID= 0.08 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.20 (ft) WIDTH = 1 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.2 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.32 (sq/ft) WP = 2.26 (ft) R = 0.14 Z ACTUAL = 0.09 MUST BE > THAN Z REQ'D. _ V = 3.65 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) W- 0.87 (#/sq ft) 1.25 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 2.20 ft (DEPTH BASED ON CAPACITY CALCS) _ 0.20 ft \ / (BOTTOM WIDTH) 1.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 24-May-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 5 AREA = 0.20 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 0.51 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.100 (ft/ft) Z REQUID= 0.04 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.20 (ft) WIDTH = 1 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.2 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.32 (sq/ft) WP = 2.26 (ft) R = 0.14 Z ACTUAL = 0.09 MUST BE > THAN Z REQ'D. _ V = 3.65 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.04 0.87 (#/sq ft) 1.25 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 2.20 ft (DEPTH BASED ON CAPACITY CALCS) _ 0.20 ft \ / (BOTTOM WIDTH) 1.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 24-Jun-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 6 AREA = C = Tc = INTENSITY = FLOW = 7.00 0.35 5.00 7.27 (in/hr) 17.81 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.070 (ft/ft) Z REQUID= 1.58 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.60 (ft) WIDTH = 3 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 2.6 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 2.88 (sq/ft) WP = 6.79 (ft) R = 0.42 Z ACTUAL = 1.62 MUST BE > THAN Z REQ'D. _ V = 6.36 (ft/sec) LINING REQUIREMENTS LINING: TURF REINF. MATTING COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 1.58 0.94 (#/sq ft) 2.62 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 6.60 ft (DEPTH BASED ON CAPACITY CALCS) 0.60 ft \ / (BOTTOM WIDTH) 3.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 24-Jun-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 7 AREA = C = Tc = INTENSITY = FLOW = 4.00 0.35 5.00 7.27 (in/hr) 10.18 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.015 (ft/ft) Z REQUID= 1.95 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.60 (ft) WIDTH = 4 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 0.6 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 3.48 (sq/ft) WP = 7.79 (ft) R = 0.45 Z ACTUAL = 2.03 MUST BE > THAN Z REQ'D. _ V = 3.05 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 1.95 0.44 (#/sq ft) 0.56 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 7.60 ft (DEPTH BASED ON CAPACITY CALCS) _ 0.60 ft \ / (BOTTOM WIDTH) 4.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 24-Jun-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 8 AREA = 3.20 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 8.14 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.010 (ft/ft) Z REQUID= 1.91 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 1.05 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 0.7 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 3.31 (sq/ft) WP = 6.64 (ft) R = 0.50 Z ACTUAL = 2.08 MUST BE > THAN Z REQ'D. _ V = 2.67 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 1.91 0.5 (#/sq ft) 0.66 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 6.30 ft (DEPTH BASED ON CAPACITY CALCS) _ 1.05 ft \ / (BOTTOM WIDTH) 3 10 o CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 24-Jun-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 9 AREA = 3.10 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 7.89 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.040 (ft/ft) Z REQUID= 0.93 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.80 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 2.0 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 1.92 (sq/ft) WP = 5.06 (ft) R = 0.38 Z ACTUAL = 1.01 MUST BE > THAN Z REQ'D. _ V = 4.46 (ft/sec) LINING REQUIREMENTS LINING: COCONUT BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.93 0.44 (#/sq ft) 2.00 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 4.80 ft (DEPTH BASED ON CAPACITY CALCS) 0.80 ft \ / (BOTTOM WIDTH) 3 10 o CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 23-Apr-21 CALCULATED BY: SCB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 10 AREA = 1.40 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 3.56 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.063 (ft/ft) Z REQUID= 0.33 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.55 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 2.1 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.91 (sq/ft) WP = 3.48 (ft) R = 0.26 Z ACTUAL = 0.37 MUST BE > THAN Z REQ'D. _ V = 4.35 (ft/sec) LINING REQUIREMENTS LINING: COCONUT BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.33 0.94 (#/sq ft) 2.15 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 3.30 ft (DEPTH BASED ON CAPACITY CALCS) 0.55 ft \ / (BOTTOM WIDTH) 3 10 o CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 24-Jun-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 11 AREA = 1.80 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 4.58 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.100 (ft/ft) Z REQUID= 0.34 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.40 (ft) WIDTH = 1 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 2.5 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.88 (sq/ft) WP = 3.53 (ft) R = 0.25 Z ACTUAL = 0.35 MUST BE > THAN Z REQ'D. _ V = 5.33 (ft/sec) LINING REQUIREMENTS LINING: TURF REINF. MATTING COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.34 0.062 (#/sq ft) 2.50 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 3.40 ft (DEPTH BASED ON CAPACITY CALCS) 0.40 ft \ / (BOTTOM WIDTH) 1.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 24-Jun-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 12 AREA = 1.00 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 2.54 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.100 (ft/ft) Z REQUID= 0.19 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.30 (ft) WIDTH = 1 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.9 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.57 (sq/ft) WP = 2.90 (ft) R = 0.20 Z ACTUAL = 0.19 MUST BE > THAN Z REQ'D. _ V = 4.55 (ft/sec) LINING REQUIREMENTS LINING: COCONUT BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.19 1.25 (#/sq ft) 1.87 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 2.80 ft (DEPTH BASED ON CAPACITY CALCS) 0.30 ft \ / (BOTTOM WIDTH) 1.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 23-Apr-21 CALCULATED BY: SCB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 13 AREA = C = Tc = INTENSITY = FLOW = 13.50 0.35 15.00 4.90 (in/hr) 23.15 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.020 (ft/ft) Z REQUID= 3.85 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 1.10 (ft) WIDTH = 2 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.4 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 5.83 (sq/ft) WP = 8.96 (ft) R = 0.65 Z ACTUAL = 4.38 MUST BE > THAN Z REQ'D. _ V = 4.52 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 3.85 1.87 (#/sq ft) 1.37 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 8.60 ft (DEPTH BASED ON CAPACITY CALCS) _ 1.10 ft \ / (BOTTOM WIDTH) 2.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 23-Apr-21 CALCULATED BY: SCB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 14 AREA = 0.32 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 0.81 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.076 (ft/ft) Z REQUID= 0.07 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.35 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.7 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.37 (sq/ft) WP = 2.21 (ft) R = 0.17 Z ACTUAL = 0.11 MUST BE > THAN Z REQ'D. _ V = 3.55 (ft/sec) LINING REQUIREMENTS LINING: COCONUT BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.07 1.87 (#/sq ft) 1.66 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 2.10 ft (DEPTH BASED ON CAPACITY CALCS) 0.35 ft \ / (BOTTOM WIDTH) 3 10 o CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 24-Jun-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 15 AREA = C = Tc = INTENSITY = FLOW = 12.80 0.35 15.00 5.81 (in/hr) 26.03 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.050 (ft/ft) Z REQUID= 2.73 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 1.10 (ft) WIDTH = 1 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 3.4 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 4.73 (sq/ft) WP = 7.96 (ft) R = 0.59 Z ACTUAL = 3.34 MUST BE > THAN Z REQ'D. _ V = 6.73 (ft/sec) LINING REQUIREMENTS LINING: NAG P300 COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 2.73 1.87 (#/sq ft) 3.43 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 7.60 ft (DEPTH BASED ON CAPACITY CALCS) 1.10 ft \ / 1.00 ft (BOTTOM WIDTH) CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 23-Apr-21 CALCULATED BY: SCB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 16 AREA = C = Tc = INTENSITY = FLOW = 11.53 0.35 15.00 5.81 (in/hr) 23.45 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.016 (ft/ft) Z REQUID= 4.35 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 1.30 (ft) WIDTH = 1 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.3 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 6.37 (sq/ft) WP = 9.22 (ft) R = 0.69 Z ACTUAL = 4.98 MUST BE > THAN Z REQ'D. _ V = 4.21 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 4.35 1.87 (#/sq ft) 1.30 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 8.80 ft (DEPTH BASED ON CAPACITY CALCS) _ 1.30 ft \ / (BOTTOM WIDTH) 1.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 26-Apr-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 17 AREA = C = Tc = INTENSITY = FLOW = 11.00 0.35 15.00 5.81 (in/hr) 22.37 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.030 (ft/ft) Z REQUID= 3.03 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 1.10 (ft) WIDTH = 1 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 2.1 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 4.73 (sq/ft) WP = 7.96 (ft) R = 0.59 Z ACTUAL = 3.34 MUST BE > THAN Z REQ'D. _ V = 5.21 (ft/sec) LINING REQUIREMENTS LINING: COCONUT BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 3.03 1.87 (#/sq ft) 2.06 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 7.60 ft (DEPTH BASED ON CAPACITY CALCS) 1.10 ft \ / (BOTTOM WIDTH) 1.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 26-Apr-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 18 AREA = 0.90 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 2.29 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.100 (ft/ft) Z REQUID= 0.17 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.50 (ft) WIDTH = 0 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 3.1 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.75 (sq/ft) WP = 3.16 (ft) R = 0.24 Z ACTUAL = 0.29 MUST BE > THAN Z REQ'D. _ V = 5.16 (ft/sec) LINING REQUIREMENTS LINING: TURF REINF. MATTING COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.17 1.87 (#/sq ft) 3.12 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 3.00 ft (DEPTH BASED ON CAPACITY CALCS) 0.50 ft \ / (BOTTOM WIDTH) 3 10 o CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 26-Apr-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 19 AREA = 0.24 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 0.61 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.100 (ft/ft) Z REQUID= 0.05 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.20 (ft) WIDTH = 1 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.2 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.32 (sq/ft) WP = 2.26 (ft) R = 0.14 Z ACTUAL = 0.09 MUST BE > THAN Z REQ'D. _ V = 3.65 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.05 1.87 (#/sq ft) 1.25 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 2.20 ft (DEPTH BASED ON CAPACITY CALCS) _ 0.20 ft \ / (BOTTOM WIDTH) 1.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 26-Apr-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 20 AREA = 1.00 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 2.54 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.050 (ft/ft) Z REQUID= 0.27 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.40 (ft) WIDTH = 1 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.2 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.88 (sq/ft) WP = 3.53 (ft) R = 0.25 Z ACTUAL = 0.35 MUST BE > THAN Z REQ'D. _ V = 3.77 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.27 1.87 (#/sq ft) 1.25 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 3.40 ft (DEPTH BASED ON CAPACITY CALCS) _ 0.40 ft \ / (BOTTOM WIDTH) 1.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 26-Apr-21 CALCULATED BY: SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 21 AREA = 0.10 C = 0.35 Tc = 5.00 INTENSITY = 7.27 (in/hr) FLOW = 0.25 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.100 (ft/ft) Z REQUID= 0.02 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 0.15 (ft) WIDTH = 1 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 0.9 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 0.22 (sq/ft) WP = 1.95 (ft) R = 0.11 Z ACTUAL = 0.05 MUST BE > THAN Z REQ'D. _ V = 3.12 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) ft 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 0.02 1.87 (#/sq ft) 0.94 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 1.90 ft (DEPTH BASED ON CAPACITY CALCS) _ \ / (BOTTOM WIDTH) 1.00 ft CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 24-Jun-21 CALCULATED BY:SJB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 22 AREA = C = Tc = INTENSITY = 7.27 (in/hr) FLOW = 3.84 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 035 (Mannings W) SLOPE= .020 (ft/ft) Z REQUID= 0.64 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = —M(ft) WIDTH = (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 0.7 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq. 1.55 (#/sq ft) I COCONUT BLANKET North American Green C125 or Eq. 2.25 (#/sq ft) N TURF REINF. MATTING North American Green C350 or Eq. 3.20 (#/sq ft) I CLASS B RIPRAP 3.50 (#/sq ft) N CLASS I RIPRAP 5.00 (#/sq ft) G CLASS II RIPRAP 7.50 (#/sq ft) Z ACTUAL AREA = 1.68 (sq/ft) WP = 4.79 (ft) R = 0.35 Z ACTUAL = 0.83 MUST BE > THAN Z REQ'D. = 0.64 V = 2.99 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET 1.87 (#/sq ft) 0.75 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 4.60 ft (DEPTH BASED ON CAPACITY CALCS) _ COMPUTED \ / DEPTH = ft \ / (BASED ON \ / CAPACITY CALCS) 1.00 ft (BOTTOM WIDTH) CHANNEL DESIGN CALCULATIONS PROJECT: BEAVER CREEK PH 2&3 10 YEAR STORM DATE: 23-Apr-21 CALCULATED BY: SCB CHECKED BY: SJB 10 YEAR CHANNEL FLOW DATA -DITCH SECTION PD 23 AREA = C = Tc = INTENSITY = FLOW = 28.00 0.35 15.00 5.81 (in/hr) 56.94 (cfs) DESIGN CRITERIA - MAX SLOPE USED TO CHECK LINING DESIGN CHANNEL PROPERTIES: N = 0.035 (Mannings 'n') SLOPE= 0.010 (ft/ft) Z REQUID= 13.37 M = 3 :1 (sideslope) CHANNEL DIMENSIONS DEPTH = 1.60 (ft) WIDTH = 4 (ft) Bottom Width TRACTIVE FORCE T =Y*D*S Tractive Force (#/sq ft) Y = WEIGHT OF WATER (62.4 #/cf) D = DEPTH OF FLOW IN CHANNEL (ft) S = SLOPE OF CHANNEL (ft/ft) T = 1.0 (#/sq ft) Maximum Allowable Tractive Force L STRAW BLANKET North American Green DS75 or Eq I COCONUT BLANKET North American Green C125 or Eq N TURF REINF. MATTING North American Green C350 or Eq I CLASS B RIPRAP N CLASS I RIPRAP G CLASS II RIPRAP Z ACTUAL AREA = 14.08 (sq/ft) WP = 14.12 (ft) R = 1.00 Z ACTUAL = 14.05 MUST BE > THAN Z REQ'D. _ V = 4.25 (ft/sec) LINING REQUIREMENTS LINING: STRAW BLANKET COMPUTED DEPTH = (BASED ON CAPACITY CALCS) 1.55 (#/sq ft) 2.25 (#/sq ft) 3.20 (#/sq ft) 3.50 (#/sq ft) 5.00 (#/sq ft) 7.50 (#/sq ft) 13.37 1.87 (#/sq ft) 1.00 #/sq ft TOP WIDTH AT COMPUTED DEPTH = 13.60 ft (DEPTH BASED ON CAPACITY CALCS) _ 1.60 ft \ / (BOTTOM WIDTH) 4.00 ft