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2008-04-15_REVISION - M1980244 (235)
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2008-04-15_REVISION - M1980244 (235)
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Last modified
6/15/2021 5:52:06 PM
Creation date
5/21/2008 3:07:19 PM
Metadata
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Template:
DRMS Permit Index
Permit No
M1980244
IBM Index Class Name
Revision
Doc Date
4/15/2008
Doc Name
VOL V APP 8 Appendix C.5 Riser Pipe Calculations
From
CC & V
To
DRMS
Type & Sequence
AM9
Media Type
D
Archive
No
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Mr. <br />SMITH W0.LIAMS CONSULTANTS. INC. <br /> <br />4 <br />4 <br />ROJECT: JOB NO: SHEET--3-OF--Z <br />requa VLF 1125 <br />EATURE: <br />f BY: DATE: <br />iser Pipe Design ALD 2/18/08 <br />DETAILS: CHKD BY: DATE: <br />Downdrag DTW 2/20/08 <br />• Analysis: <br /> Select backfill = Screened ore <br /> Assume: <br /> Yd = 110 pcf (similar to ore) <br /> (=35' <br /> 6, = 2.65 <br /> wd,.,;,, = 10% (field capacity for ore is 5.6%, so conservative) <br /> Worst Case: Assume "wet" ore to full depth and no solution in PSSA. <br /> Y.=Yd*(I+W) <br /> = 110 * (1.0.10) = 121 pcf <br /> K, = 1 - sin(b =1-sin(35') = 0.426 = 0.43 <br /> Based on NAVFAC 7.2: <br /> (0,Irteeace between gravel and steel =17° <br /> Average lateral stress = 1/2 * (40 ft * 121 pcf) * 0.43 = 1,040.6 psf <br /> Maximum lateral stress = (40 ft * 121 pcf) * 0.43 = 2,081.2 psf <br /> 24° dia. <br /> SHEAR TRACTION DUE <br /> TO SETTLEMENT <br /> 40' <br /> LATERAL STRESS <br /> DISTRIBUTION
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