Laserfiche WebLink
Gold Prince Tunnel Bulkhead Calcs Page 3 August 18, 1996 <br /> Gold Prince Tunnel bulkhead, for 65 ft pressure head to push water to ground surface <br /> __ phl _ 28.2(9.5)8.5 727 <br /> I' [2(h+l)fQ [2(9.5+8.5)110] 39 00 —0.6 ft <br /> W=phl =28.2(9.5)8.5(144)=328,000 lb <br /> v° = w 328000 - 12.7 psi <br /> [2(h+l)]L(144) [2(9.5+8.5)]5(144) <br /> FS= V, = 12 0 =8.66 <br /> Plain concrete deep-beam bending stress design, Gold Prince Tunnel (ACI 318-89, Sec 9.9.2.5, <br /> 18.4.1(b), & ACI 318-71, Sec 9.2.1.5) <br /> Gold Prince Tunnel bulkhead, for 20 ft pressure head to push water into Sunnyside Nfiine <br /> w =U= 1.4p(144) = 1.4(9)144 = 1,814 (ft) <br /> m12 1814(8.52)s s = 16,400 ft lb <br /> = = <br /> 16400 =25,200 ft.lb <br /> 0.65 0.65 <br /> I 12 12 1440 <br /> S = C= L _ ,412, = 6 <br /> 2 2 <br /> fc1 = 3 fT = 3 3000 = 164psi <br /> _ _ _ M„c _ M. 25200 1050 <br /> fcl 164—Q I — S 144L2 = L2 <br /> 6 <br /> L= i05 = 6.4 =2.5 ft Therefore, 5-ft long bulkhead needs no reinforcement. <br /> Q= NIA = Mu = 25200 = 25200 = 42 Sl <br /> S 144L2 144(s2) 600 P <br /> 6 <br /> 6 <br /> FS = fa1 = 424 =3.90 <br /> 3 <br />