2521 MONROE AVE 2021-09-24 - Laserfiche WebLink

• 12 of 19 Project Number: Plan Name: Sheet Number: S210319-9XR Foundation Stabilization Engineer: Subject: Date: JT Unreinforced Conc Design Check 5/4/21 DEMAND CALCULATION number of stories # 1 stories span L 8.0 ft [max on-center pile spacing] concrete area A 216 in2 *see attached concrete self weight SW 250 plf [Includes total height w/o ACI14§14.5.1.7 redux] Pt DL DL 4.02 k = 8.0 ft *502.5 [1-story loading] Pt LL LL 3.20 k = 8.0 ft *400 [1-story loading] Pt LLr LLr 3.10 k = 8.0 ft *387.5 [1-story loading] moment from DL Mot 10,040 lb-ft 120.5 k-in moment from LL MLL 6,400 lb-ft 76.8 k-in moment from SL MLA 6,200 lb-ft 74.4 k-in factored moment MIRK) 168.7 k-in 1.4DL MLRFD 304.7 k-in 1.2DL+1.6LL+0.5SL MLRFD 340.4 k-in 1.2DL+1.6SL+LL controlling factored moment M„ 340.4 k-in factored shear VLRFD 4.2 k 1.4DL VLRFD 6.9 k 1.2DL+1.6LL+0.5SL VLRFD 7.7 k 1.2DL+1.6SL+LL controlling factored shear V„ 7.7 k controlling factored bearing B„ 7.7 k [R=V for SS beam] STRENGTH CALCULATION concrete strength f'c 2.5 ksi assumed light wt concrete mod.factor A 1 normal weight concrete flexure strength red.factor 441, 0.9 tension-controlled ACI14[Table 21.2.1] shear strength red.factor Cheer 0.75 ACI14[Table 21.2.1] bearing strength red.factor $be,r„,g 0.65 ACI14[Table 21.2.1] moment of ineritia In,, 11,016 in4 *see attached elastic section modulus S,„ 1,001 in3 *see attached tens fiber to NA c 11.0 in *see attached nom flexure strength(Tcontrols) Mn 250.4 k-in M.=51VT.5m ACI 318-14[Eq.14.5.2.1a] nom flexure strength(C controls) M„ 2,128.1 k-in is...a.s'/'5,.. ACI 318-14[Eq.14.5.2.1b] RESIDENTIAL CONCRETE M„ 375.5 k-in Mn,=7.551S,F, CONTROLS ACI 332-14[Eq.8.2.1.1] flexure strength 41M,, 338.0 k-in <Mu FAILED D/C=100.72% nom shear strength V„ 14.4 k n=3 4 d *A ACI14[Table 14.5.5.1(a)] shear strength y.V„ 10.8 k >Vu OK D/C=71.22% loaded bearing area Al 74 in2 [IDEAL 2-7/8"Tru-Force Underpinning Bracket] supporting surface bearing area A, 74 in2 [If the supporting surface is>than loaded area] nom bearing strength B„ 156.6 k 0.85/;'.4, ACI14[Table 14.5.6.1(co] bearing strength 4,B,, 101.8 k >Bu OK D/C=7.56% Additional Verification Calc: max concrete tensile strength f, 375 psi f =7 52jK ACI 14[Eq.19.2.3.1] max beam tensile stress F, 340 psi (M*c) Fc= llxx >Ft OK 1(...4123