BC14a=aM..___r--..•Eccentric Loading:i.e. load not at footing center - overturning momentoOverturning moment equivalent toeccentric load at distance e fromfooting centerlineaConsider footing of width B and length LoExamine pressure distribution under footingoAssume footing is rigid and that soil has~t~~~i~t::~~i~i::t?~~~t~:~~~~t::nglinear behavior. Use beam analogy.oSeparate flexural and uniform load componentsBaagllllilorm-A=LMc(~HB/2)_60et!III,I(LB'/12)LB'oSum the components:=+=..9..+qqUI1I!orm- qllexBL -LB2q.[1+6e]andq. =..9..[1_6e]maxBLBminBLB-,,",",III~I~,IjY1/I1/~Ixandqmin=0this equation is valid fore:5B/6 at which point qmin=a(To prevent tipping, most designers maintain e
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