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1987-12-01_PERMIT FILE - C1981017 (168)
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1987-12-01_PERMIT FILE - C1981017 (168)
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Entry Properties
Last modified
1/4/2021 2:20:02 AM
Creation date
5/20/2008 12:40:57 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981017
IBM Index Class Name
PERMIT FILE
Doc Date
12/1/1987
Doc Name
Coal Refuse Facility Drainage Control Plan
Section_Exhibit Name
Chapter II Attachment 5 To Appendix II-B-7 (II-B-App.7-Att 5)
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
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RIPRAP SIZING CHART <br /> RIPRAP DESIGNATION AND d50 SIZE <br /> 20Lu <br /> co <br /> uu. 15 <br /> i I VH(24') �-- <br /> I i f H(18') <br /> o <br /> W 10 <br /> M(12') <br /> > 90 i ? <br /> g 3 L( 9' <br /> VL(6') I ; <br /> 5-- <br /> 0 I I I II ► <br /> 0 .05 .10 .15 .20 .25 <br /> CHANNEL SLOPE S <br /> SIZING DERIVED FROM FORMULA: <br /> V.S 0.17 - V S 0.17 2 <br /> 5.8 OR d 50 - <br /> d0.5(S —1) 0.ss 7.58 <br /> 50 S <br /> ASSUMING SPECIFIC GRAVITY OF RIPRAP. SS = 2.5 <br /> REF: URBAN STORM DRAINAGE CRITERIA MANUAL. MAJOR DRAINAGE SECTION . <br /> i <br /> 4 GEO-HYDRO CONSULTING. INC. <br />
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