738 CROWN DR 2021-02-22 - Laserfiche WebLink

• • 11 of 16 Project Number: Plan Name: Sheet Number: S200303-3 Foundation Stabilization Engineer: Subject: Date: ZT Unreinforced Conc Design Check 4/19/2020 DEMAND CALCULATION number of stories # 1 stories span L 7.0 ft [max on-center pile spacing] concrete area A 216 in2 *see attached concrete self weight SW 250 plf [Includes total height w/o AC114§14.5.1.7 redux] Pt DL DL 4.38 k = 7.0 ft *625 [1-story loading] Pt LL LL 4.20 k = 7.0 ft *600 [1-story loading] Pt LLr LLr 3.50 k = 7.0 ft *500 [1-story loading] moment from DL Met 9,188 lb-ft 110.3 k-in moment from LL MLL 7,350 lb-ft 88.2 k-in moment fromSL Mar 6,125 lb-ft 73.5 k-in factored moment MLp;D 154.4 k-in 1.4DL MLaFo 310.2 k-in 1.201+1.6LL+0.5SL Krim 338.1 k-in 1.2DL+1.6SL+LL controlling factored moment M. 338.1 k-in factored shear VLRFD 4.3k 1.4DL Vu,F0 7.9 k 1.2DL+1.6LL+0.5SL VLRFD 8.6 k 1.20L+1.6SL+LL controlling factored shear V. 8.6k controlling factored bearing B„ 8.6 k [R=V for SS beam] STRENGTH CALCULATION concrete strength f'c 2.5 ksi assumed light wt concrete mod.factor X 1 normal weight concrete flexure strength red.factor (Pfiex 0.9 tension-controlled ACI14[Table 21.2.1] shear strength red.factor Che,, 0.75 ACI14[Table 21.2.1] bearing strength red.factor tbearMg 0.65 ACI14[Table 21.2.1] moment of ineritia I„ 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,L=52.1F,Sm. ACI 318-14[Eq.14.5.2.1a] nom flexure strength(Ccontrols) M" 2,128.1 k-In ;If,,-0.8S(,'S„, ACI 318-14[Eq.14.5.2.1b] RESIDENTIAL CONCRETE Mn 375.5 k-in Mn=7.554Sr„ CONTROLS ACI 332-14[Eq.8.2.1.1] flexure strength hM,. 338.0 k-in <Mu FAILED ( D/C=100.03% *ACCEPTABLE BY INSPECTION nom shear strength V.. 14.4 k n=3 d *A ACI14[Table 14.5.5.1(a)] shear strength rt•V. 10.8 k >Vu OK I D/C=79.40% loaded bearing urea A2 74 in2 [IDEAL 2-7/8"Tru-Force Underpinning Bracket] supporting surface bearing area A2 74 in2 [If the supporting surface Is>than loaded area] nom bearing strength en 156.6 k 0.85.f.'A i AC114[Table 14.5.6.1(c)] bearing strength I 4313. 101.8 k >8u OK D/C=8.42% Additional Verification Cale: max concrete tensile strength f, 375 psi fr=7.5A f'c ACI 14[Eq.19.2.3.1] max beam tensile stress F, 338 psi Ft=(M*c)/Ixx If, >Ft OK I