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2014-09-22_PERMIT FILE - C1996083A (2)
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2014-09-22_PERMIT FILE - C1996083A (2)
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Last modified
8/24/2016 5:47:57 PM
Creation date
10/10/2014 12:23:30 PM
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Template:
DRMS Permit Index
Permit No
C1996083A
IBM Index Class Name
Permit File
Doc Date
9/22/2014
Doc Name
Appendix B - Protection of Hydrologic Balance
Section_Exhibit Name
Volume XI Coal Mine Waste Disposal Area No. 3
Media Type
D
Archive
Yes
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Ditch J -11 Optional <br />Manning's Equation <br />Flow In a 30" Half Culvert <br />Flow Depth D 0.80 <br />Feet <br />Slope S 0.08 <br />Express as Decimal <br />Mannings "N" N 0.03 <br />Express as Decimal <br />AREA = Number Derived in AutoCad <br />1.35 FEET "2 <br />WETTED PERIMETER= (2 *Pi *r) /2 <br />3.01 FEET <br />Number derived in AutoCad <br />R= AREA/WETTED PERIMETER <br />0.45 <br />IV= (1.49/N) *(R ^.667) *(S ^.5) = 8.23 FT /SEC <br />IQ =AXV= 11.11 CFS <br />IQ REQUIRED - Peak Discharge 11.00 CFS <br />1.25' FLOW DES 1 ri <br />(MAXIMUM) <br />30' 112 Ct LVERT <br />.SO' Flow <br />0.45' FRe <br />VETTED PERIMETER <br />TR -92 Volume XI App. B -53ii 08/14 <br />
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