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Slal'6 OI'r_ULO r<1U0 rvu'n.~en i~. lnnnd. th.v ~.u nu III III III III'III'll <br />DEPARTMENT OF NATURAL RESOURCES <br />D. lvlon~e Pascoe, Enecutive Dirrc for ~ 999 <br />M IN ED LAND R ECLAIVIA'I'ION <br />423 Centennial Building, 1313 Sherman Street <br />Denver, Colorado 80203 Tel. (303) 839-3567 <br />17 November 1980 <br />Mr. Dan Rinehart, P.E. <br />Highland Engineering <br />P.O.Box 531 <br />Delta, Colorado 81416 <br />Dear Dan; <br />Enclosed herewith are two chapters from Lambe <br />You will note that c' is the "cohesion intercept". <br />find a copy of Wu's Soil Mechanics. I'd appreciate <br />xerox cLpy of the appropriate chaotrr of Wu's text. <br />papers by l!u and Kraft, but none of them refer to a <br />slope stability analysis technique. <br />David C. Shelton <br />Director <br />§ Whitman's Soil Mechanics. <br />I will continue trying to <br />your forwarding me a <br />I have several ASME <br />simple Total Stress <br />I am sorry if you were exposed to embarrassment in this situation. <br />I will endeavor in the future to avoid such situations if possible. I will <br />look forward to assisting in clarifying the apparent discrepancy in this <br />calculation. <br />Normal cohesion intercept values for such soils range from 50 - 500 <br />pounds/square foot. The 2800 pound/square foot value you used is unusually <br />high. Hopefully the laboratory has been able to resolve their testing <br />problem and produce some acceptable test result. I'll look forward to <br />a revised test result and data reduction. <br />Sincerely ,yours, <br />,."~ , <br />"Jim Pendleton <br />Senior Geologist <br />