PERMFILE69828

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: Exhibit 42 Sylvester Gulch Fan Site Information
• Media Type: D
• Archive: No

R = Zd
2 Z + 1
R = 1.5 1
2 1.5 +1
R 0.4160
Y = 1.49/.040 (0.4160)2/3 (.075)1/2
V = 5.68 f/s
QAV
Q = (1.5 ft2) (5.68 f/s)
Q = 8.52 cfs ~ 4.08 cfs so ok.
Solve for depth of flow @ 4.08 cfs to determine freeboard
Q = VA ~ 1.49/n RZ/3 51/2 (A)
Q = 1.49 f 1.5 dZ ~ 2/3 {0.75)1/2 (1.5d2)
.040 c1.5,cd) 1.52+1
• 4.08 10.20 1.5d2 2/3 (1.5d2)
~1.Sd (1.8028)
0.4000 = 1.8028 ] 2/3 (1.5d2)
Trial d rhs
0.6522
0.6 0.4874
0.5 0.3443
0.575 0.4496
0.55 0.4131 0.4000
1.0' - 0.55' = 0.45' freeboard > 0.30' so ok.
Cross Drainage - Corrugated Metal Pile (CMPI Sizin
Design Data
Maximum peak discharge (10 yr., 24 hr.) 4.08 cfs
CMP slope 2.57E
Culvert length 20 ft.
Drop (inlet to outlet) 0.5 ft.
Assume: 1. No static head @ inlet
(4)