Laserfiche WebLink
15 of 20 <br /> Project Number: Plan Name: Sheet Number: <br /> S221216-1XR _ 2303 Oakes Ave <br /> Engineer: Subject: Date: <br /> PAM 2ft Unreinforced Conc Beam 1/3/2023 <br /> DEMAND CALCULATION NOTE:Loading is conservative. <br /> number of stories # 2 stories <br /> span L 6.0 ft [max on-center pile spacing] <br /> concrete area A 216 in2 `see attached <br /> concrete self weight SW 250 plf [Includes total height w/o ACI14 414.5.1.7 redux] <br /> Pt DL DL 3.50 k = 6.0 ft •946 [2-story loading] <br /> Pt LL LL 2.50 k = 6.0 ft •980 [2-story loading] <br /> Pt LLr LLr 2.00 k = 6.0 ft •100 [2-story loading] <br /> moment from DL MDL 6,375 lb-ft 76.5 k-in <br /> moment from LL MLL 3,750 lb-ft 45.0 k-in <br /> moment from SL MLL, 3,000 lb-ft 36.0 k-in <br /> factored moment MIND 107.1 k-in 1.4DL <br /> MUM) 181.8 k-in 1.2DL+1.6LL+0.55L <br /> MLRFD 194.4 k-in 1.2DL+1.6SL+LL <br /> controlling factored moment M„ 194.4 k-in <br /> factored shear VLanx 3.5k 1.40L <br /> VLLOD 5.5 k 1.2DL+1.6LL+0.5SL <br /> VLnFD 5.9k 1.2DL+1.6SL+LL <br /> controlling factored shear V„ 5.9 k <br /> controlling factored bearing B„ 5.9 k [R=V for SS beam] <br /> STRENGTH CALCULATION <br /> concrete strength Pc 2.5 ksi assumed <br /> light wt concrete mod.factor A 1 normal weight concrete <br /> flexure strength red.factor one. 0.9 tension-controlled ACI14[Table 21.2.1] <br /> shear strength red.factor Chew, 0.75 ACI14[Table 21.2.1] <br /> bearing strength red.factor 0.65 ACI14[Table 21.2.1] <br /> moment of ineritio I„ 11,016 in4 'see attached <br /> elastic section modulus 5,„ 1,001 in3 •see attached <br /> tens fiber to NA c 11.0 in *see attached <br /> nom flexure strength(T controls) M„ 250.4 k-in Mn=5A Sm ACI 318-14[Eq.14.5.2.1a] <br /> nom flexure strength(C controls) M„ 2,128.1 k-in ;t/,-O.55i'S.;, ACI 318-14[Eq.14.5.2.1b] <br /> RESIDENTIAL CONCRETE M„ 375.5 k-in ,14„=7.55A,rr'„Sm CONTROLS ACI 332-14[Eq.8.2.1.1] <br /> flexure strength $Ma 338.0 k-in >Mu OK D/C=57.52% <br /> nom shear strength V„ 14.4 k lc, 3 <br /> =4 A,�•A ACI14[Table 14.5.5.1(a)] <br /> sheor strength On 10.8 k >Vu OK D/C=54.17% <br /> • <br /> loaded bearing area AL 74 in2 [IDEAL 2-7/8"Tru-Force Underpinning Bracket] <br /> supporting surface bearing area A2 74 in2 [If the supporting surface is>than loaded area] <br /> nom bearing strength B�, 156.6 k 0.85f...4, ACI14[Table 14.5.6.1(c)] <br /> 1 bearing strength d'B„ 101.8 k >Bu OK D/C=5,75% <br /> Additional Verification Calc: <br /> max concrete tensile strength f. 375 psi f=7.5A ACI 14[Eq.19.2.3.1] <br /> max beam tensile stress F, 194 psi Ft=(M a c) <br /> /fxx <br /> f, >Ft OK <br />