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Bulkhead Design <br />• Page 2 <br />= 0.85F'c x 87,000 <br />° fy 87,000 + fy <br />= 0.85 x 3000 psi x 0.85 x 87,000 <br />60,000 87.000 + 60,000 <br />= 0.0361 x 0.591 = 0.0214 <br />ACI Code Requirement <br />max.= 0.756 = 0.75 x 0.0214 = 0.0160 <br />/~ min.= 200/60,000 = 0.0036 x 0.0160 <br />_~~ = 0.016 x 60,000 = 0.3_1 <br />f'c 3,000 <br />and w(1 - 0.59 w) = 0.321 x (1 - 0.1876) = 0.261 <br />d2 = MT = 2,701 Kip - in <br />f'c b w (1 - 0.59 w) 3 x 12 x 0.261 <br />• d2 = 287.46 in2 = 16.95 in ~ 17.0 <br />As = bbd = 0.0160 x 12" x 17.0 in ~ 3.26 in2 <br />X10 bar - 3 per foot ~ 3.81 in` <br />Check: <br />T = As fy = 3.26 in2 x 60,000 ib/in2 = 195,600 lbs. <br />C = 0.85 f'cba = 195,600 <br />a = C = 195,600 lbs = 6.33 in2 <br />0.85 f'cb 0.85 x 3,000 psi x 12 in <br />Mt = T(d - a/2) = 195,600 (17 in - 6.33 in2 ) = 2,706,126 in - lbs <br />2 <br />= 225,511 ft - lbs <br />= 2,706 Kin - in <br />Horizontal Reinforcement <br />0.0025 x 12 in, x 24 in. = 0.72 in. 1 (~3 bar) every foot <br /> <br />