PERMFILE66875

• Permit No: C1981016
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Sedimentation Control & Diversion Structure Calculations
• Section_Exhibit Name: APPENDIX XXI to Section XXI.8
• Media Type: D
• Archive: No

beak

WEST I1INE DIVERSION -EAST LIMB
Ditch Sizing
1. Q = 10.65 cfs
2. Rearrange planning Equation.
V=1n5R3 SZ

V = ln5 (P)~ S'z
(A)3 = (V)(n
P (1.5)(S~2)
~; 3
A _ ~1 V n 2
P 1.5) SZ
A
(V n z
P - ~1.5)(S12)
R=A/P
z
3. Solve for P if V = 5.0 ft/s ~ A = Q/V = 2.13 ft
z
2.13 ft
5.0 ft/s 0.05
P (1.5)(D.108)~ = 5.898 ft
4. Ditch design.
A= ;XY P =Z+Y
X = 2Y P =~ = Y