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PERMFILE105841
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PERMFILE105841
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Entry Properties
Last modified
8/24/2016 9:58:42 PM
Creation date
11/24/2007 12:50:46 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981048
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Section_Exhibit Name
EXHIBIT V-3
Media Type
D
Archive
No
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<br /> <br />Revised Ditch Design <br />1. Ditch: 22-D4 (Revised 10/3/80) <br />2. Description: Diversion Ditch <br />3. Ditch Grade: 2% <br />4. Area Drained: 24.67 acres <br />5. Peak Discharge: (1.12)(38)(1.11) - 47.24 cfs <br />6, Ditch Design: <br />* The peak discharge was assumed to be correct for the purposes <br />of the revised ditch design. <br />n = .030 <br />Use ditch w/"V" walls 2:1 slope See chart 1031.2-2 fi <br />Calculations below <br />From chart: 2' FB DT D = 1.5 A = 2D + 2D2 V = 6.3 fps <br />= 3.0 + 4.5 <br />= 7.5 <br />*Depth for "V" DT w/2:1 S1 D = <br />- 7.5 <br />= 1.94 <br />* D = 1.94 feet deep <br />Use 2.44 feet deep with 0.5 freeboard <br /> <br />
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