2020-03-31_PERMIT FILE - C1981019A ‎(13)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 3/31/2020
• Doc Name: Prospect Sedimentation Pond
• Type & Sequence: TR136
• Section_Exhibit Name: Exhibit 07 Item 20 Part PP
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
rnnwrinhf 10QA_7nin Pamola I Crhwah
27
Combined
Elevation Emergency Straight Pipe Total
(ft) Spillway(cfs) (cfs) Discharge
(cfs)
7,484.00 0.000 0.000 0.000
7,485.00 0.000 0.000 0.000
7,486.00 0.000 0.000 0.000
7,487.00 0.000 0.000 0.000
7,488.00 0.000 0.000 0.000
7,489.00 0.000 0.000 0.000
7,490.00 0.000 0.000 0.000
7,491.00 0.000 0.000 0.000
7,492.00 0.000 0.000 0.000
7,493.00 0.000 (3)>2.094 2.094
7,494.00 0.000 (6)>0.000 3.952
-------- -- ---------
7,495.00 0.000 (6)>0.000 4.465
7,496.00 0.000 (6)>0.000 53.266
Structure #15(Riprap Channel)
E Pit Ditch from EP2 to EP1
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right Freeboard Freeboard Freeboard
Bottom Sideslope Sideslope Slope(%)
Width (ft) Ratio Ratio Depth (ft) %of Depth Mult.x
(VxD)
12.00 2.0:1 2.0:1 13.0 1.00
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
w/o Freeboard w/Freeboard
Design Discharge: 3.81 cfs
Depth: 0.05 ft 1.05 ft
Top Width: 12.20 ft 16.20 ft
Velocity*:
X-Section Area: 0.60 sq ft
Hydraulic Radius: 0.049 ft
Froude Number*:
Manning's n*:
Dmin: 2.00 in
D50: 6.00 in
Dmax: 7.50 in
Velocity and Manning's n calculations may not apply for this method.
Filename: Prospect Pond 10 Yr 24 Hr Storm Event.sc4 Printed 01-06-2020