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Bulkhead Design .. <br />Page 4 <br /> <br />Vertical Loa on Wall <br />..... . .: <br />s - <br />- - <br /> <br />r.. _ <br /> <br />si <br />- '};'. <br />_ _y <br />. J ~ ~ l ~.F ~ <br />_ _ <br />'{. <br /> <br />-- .?f`gcv.b~d... O~~s~(..- <br /> <br /> <br /> <br />c ~ 1:'r'' - - - _ - <br /> <br /> .. <br />K <br />`. <br />~ <br />te- ±.t....-.,-.,.. <br />. <br />.': <br />.. <br />.. <br />r . { <br />. . y <br />.. <br /> <br /> <br />"ti +.. +1. T'~M --..ti . ~.;~C ~.f.:~s~s~~rf i.ti ^r~ <br />1 <br />- 1 <br />' <br />. ~ <br />~w <br />~.~ ~ <br />!. <br />.* ~.x'~a' <br />~ <br />.. ,.. ~`' ;: }, <br />~ <br />. <br />_ <br />_ _ <br />= <br />~= L ~ y~ <br />,tom <br /> <br /> <br />Y~_ ~.?i'' ._ _ '~ .. •+.~y mss,:. R-~.l'... _ _ ~ - . <br />Overburden density x.150 lbs/ft3 <br />Volume per linear ft of seal = (2' x 1" x 75') + 2 [}(75 tan 90-66 ) 75~ <br />= 150 ft3 + 2,504 ft3 <br />= 2,654 ft3 <br />Weight of rock = 150 lbs/ft3 x 2,654 ft3 = 398,100 lbs <br />Pu = 1.7 P1 = 1.7 x 398,100 lbs = 676,770 lbs. <br />Pu/0 = 676,770 lbs - 0.700 = 966,814 lbs = 3,357 psi <br />Po = 0.85 f'c (Ag - Ast) + fy Ast <br />= 0.85 (3000 psi) (288 in2 - 7.62 in2) + 60,000 psi x 7.62 in` <br />= 714,969 lbs + 457,200 lbs = 1,172,169 lbs <br />= 4070 psi > 3,357 psi .. ok <br />