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DEFINITIONS: NOTES: <br /> o+ q,. Point load in pounds 1.Procedures for estimating surcharge pressures shown above are based on Manual <br /> 0 <br /> ELine load in pounds/foot 7.02 Naval Facilities Engineering Command,September 1986(NAVFAC DM 7.02). <br /> Q - 2.See report text for where surcharge pressures are appropriate. <br /> H = Excavation height below footing,feet <br /> q{ = Lateral earth pressure from surcharge,psf <br /> q = Surcharge pressure in psf <br /> x <br /> 9 = Radians <br /> = Distribution of QH in plan view <br /> PH= Resultant lateral force acting on wall,pounds <br /> 0 <br /> R = Distance from base of excavation to resultant lateral force,feet <br /> CO <br /> CV <br /> w LATERAL EARTH PRESSURE FROM LATERAL EARTH PRESSURE FROM UNIFORM SURCHARGES, q <br /> ql <br /> cc.) POINT LOAD,Qp(SPREAD FOOTING) LINE LOAD, Q�(CONTIN''JOUS WALL FOOTING) (FLOOR LOADS, LARGE FOUNDATION <br /> ct ELEMENTS OR OTHER SURFACE LOADS) <br /> -1 X= m H X= m HI— <br /> MIIMINI q (Psf) <br /> ''x/AY/. 0p <br /> 1 /A/ QL <br /> - <br /> in f _`� Z�n H <br /> III <br /> 2 Z=nH _ PH N p" <br /> cp <br /> H Al I IA' �- <br /> H <br /> o a" R �" R BASE OF <br /> Z BASE OF BASE OF 1 ) EXCAVATION <br /> tom°- EXCAVATION EXCAVATION ow + Hi\/�// <br /> '5 <br /> '':AY/' '-,//./ .� OH 025•q <br /> o (psf) <br /> 0 <br /> _, <br /> FOR m s 0.4 <br /> crH = 0.28Qpn2 FOR m s 0.4 OH LATERAL SURCHARGE PRESSURE <br /> H 2(0.16+n 2)3 q, = 0.2n•QL FROM UNIFORM SURCHARGE <br /> H(0.16+n2)2 <br /> FOR m > 0.4 P" = 0.55Q <br /> 1. <br /> rn q, = 1.77QPm2 n2 �- <br /> - H2(m2+n2)3 'FOR m > 0.4 <br /> ori <br /> o cc: = a, COS2(1.19) q, = 1.28m2 n•Q,� <br /> o H(m2+n2)2 <br /> 0 <br /> i M P H I RESULTANT P" = 0.64Q I. <br /> / H\QF/ R ' O �4.� ( 2 ) <br /> H <br /> 0 0.2 0.78 0.59H a -- <br /> a 3 l' Op lA R <br /> o 0.4 0.78 0.59H L.L. —. <br /> o irQ" Cl. 0.60H <br /> E. 0.6 0.45 0.48H a -. Recommended Surcharge Pressure <br /> to LI. 0.3 0.60H <br /> co <br /> `n <br /> ---IX= m•H-- — Proposed Liberty Hall <br /> 0.5 0.56H Everett Community College <br /> i SECTION A—A' <br /> Lii Pressures from Point Load 0p 0.7 0.48H GEOENGINEERS� Figure 5 <br /> w <br />