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40-01.1 BOE/NG ,� <br /> SLAB CHECK P.O.Box 3707 <br /> Seattle,Washington 98124-2207 r <br /> PROJECT Install Pallet Racks for 40-05 JOB NO. W4963253 <br /> FIG.BY C. Rossell CHECKED BY M. Abdi DATE 01/10/18 REV'D <br /> AS SOIL BEARING PRESSURE DIRECTLY BELOW THE BASE PLATE IS OK,THE <br /> BENDING AND SHEAR CALCULATIONS SHOWN BELOW ARE NOT REQUIRED. <br /> REQUIRED LOADED AREA= 2.83 sf <br /> SOIL BEARING PRESSURE (DL+LL) = 1,432 psf <br /> FACTORED SBP = 1.2D +1.6L= 2,249 psf IBC-2009 Sec 16052.1 <br /> SOIL BEARING PRESSURE (DL+LL+E/1.4) = 2,314 psf <br /> 0.2*Sds = 0.1696 <br /> FACTORED SBP = (1.0+ 0.2*Sds)PD+ Rho*P(Qe) +1.0*PL= 3,055 psf <br /> REQUIRED LOADED AREA RADIUS= 11.38 in <br /> CHECK SLAB CAPACITY- REINFORCED: <br /> Mu = (3.05 "8.88^2)/(2"` 12) = 10.0 in Wft = 0.84 ft-Wft <br /> Vu = 12D +1.6L= 6.36 k <br /> Q.105�SDs= 0.08904 Rho= 1.3 <br /> Vu = (1,0+0.2*Sds)PD + Rho*P(Qe) +PL= 8.64 k <---GOVEF <br /> Unreinforced Slab (Plain Concrete,AC1319-08 Chapter 22): <br /> SLAB BENDING: S = (bd^2)/6= 128 in3 Phi'Fb=Phi*s•(f�c)ro.s= 177.5 <br /> fb= Mu/S= 78.5 psi < 177.5 psi OK <br /> PUNCHING SHEAR: bo=2"((N+t)+(B+t)) = 58 in <br /> phi*Vc= Phi*(2.66)*(fc^.5)*bo*t 43.8 kip <br /> phi*Vc= (4/3+ 8/(3*Betha))*(Lamda)*(fc^0.5}*bo*t= 92.2 (Equatian 22-10) <br /> Goversn phi*Vc = 43.8 OK <br /> CHECK BOTTOM REINFORCING FOR DOWNWARD LOADING <br /> F= (b*d^2)/12,000= 0.0123 d1 = 3.5 in <br /> Ku = Mu/F= 68.35 <br /> Ku =phi f'c*w*(1-.59*w) <br /> w= 0.0233 <br /> p REQ'D=w*(f'c/fy)= 0.0014 <br /> pMIN =200/fy= 0.0033 <br /> SETp=4/3*p= 0.0018 <br /> Asb REQ'D=pbd= 0.076 in^2 <br /> BOTTOM As PROVIDED <br /> (IN 1 FT WIDTH) = 0.20 in^2 > 0.076 in^2 OK <br /> CHECK PUNCHING SHEAR- Reinforced: <br /> ILENAME: Rack#W1337528.x1s Page 25 of 27 1/11/2018 9:10 AM <br />