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Project: Typical Footing <br />Footing: 30" x 30" x 12'' thick <br />Footing B = 2.50 ft <br />t= 12in <br />Reinforcement R = (3) #4 <br />Ayr = 0.60 in <br />d = 8.25 in Cover: 3 in <br />Column C, = 3.50 in C2 = 3.50 in <br />Materials r. = 2500 psi Normalweight = 1.00 <br />fy = 40000 psi Uncoated e = 1.00 <br />Net Footing Weight <br />PFTG = 0.25 k <br />Soil Pressure: <br />PASD = gaB2 — PFTG — <br />One-way shear: €b = 0.75 <br />Vc = 2a JTd = 24.75 k <br />V, :5 OVc ¢Vc =18.56 k <br />Vu=quB(B 2C2—d) y qu=B(B —C2—d) <br />\ qu = 8955 psf or <br />Two-way shear: 0 = 0.75 <br />[22.6.5.2(a)] v, = 4A f' = <br />[22.6.5.2(b)] vc = (2 + �) 2 <br />[22.6.5.2(c)] v, = (2 + bo ) A f� _ <br />19011 Wood-Sno Road NE, Suite 100 <br />Woodinville, WA 98072-4436 <br />Phone: 425-814-8448 <br />Fax:425-821-2120 <br />At <br />Isolated fooling <br />/B —C,— 0V, <br />2 d Vu=quB )—, qu=B\B C d) <br />2 <br />8955 psf Pu = quBZ = 55967 # <br />200 psi C-3 <br />300 psi 8 = 1.00 <br />ax = 40 <br />451 psi b o = 2(Cl+d)+2(C2+d) <br />47 <br />Vu <— 4V, OVc = Ovcbod = 58.16 k <br />0 VC <br />V. = q.JB2 — (Cl + d)(C2 + d)] - qu._ [Bz _ (CI + d)(Cz + d)] <br />qu = 10992 psf P,x = quBZ = 6B702 # <br />Moment: 0 = 0.90 <br />M. = Asfy(d — a/2) = <br />16.1 k-ft <br />a=A,fyl(0.85f,B) = <br />0.38 in <br />Mu < QM„ OMB = <br />14.5 k-ft <br />_ 2 <br />C2\ <br />quB �B / <br />20M,� <br />_ 2 _ <br />Mu 2 qu B((B — C2)/2�2 <br />qu = 9522 psf <br />or <br />Development of Reinforcement: <br />Id — 402f rKtr db = <br />10 in <br />fc b+ <br />)) <br />db <br />Soil Bearing Pressure <br />1600 psf <br />Max Load (lbs), Soil <br />9125 <br />Max Load (lbs), One -Way Shear <br />34980 <br />Max Load (lbs), Two -Way Shear <br />42938 <br />Max Load (lbs), Moment <br />37195 <br />Max Load (ASD) <br />9125 <br />Max Load (Factored) <br />14600 <br />rB _ C, <br />)2 <br />9uB \ 2 )2 <br />_ 20m, Mu 2 2 B((B — Cl)/2)2 <br />9522 psf Pu = quB= 59512 # <br />10 in available OK <br />2000 psf 2500 psf 3000 psf 3600 psf 4000 psf <br />12250 <br />15375 <br />18500 <br />21625 <br />24750 <br />34980 <br />34980 <br />34980 <br />34980 <br />34980 <br />42938 <br />42938 <br />42938 <br />42938 <br />42938 <br />37195 <br />37195 <br />37195 <br />37195 <br />37195 <br />12250 <br />15376 <br />18500 <br />21626 <br />24760 <br />19600 <br />24600 <br />29600 <br />34600 <br />39600 <br />Date: 3 25 2021 <br />Page: M2.4 <br />