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16of23 <br /> Prsyoct Number: Plan Name: Sheet\umber: <br /> S230731-2XR 7211 Beverly Blvd <br /> Engirttr: Subjcal: Da1c: <br /> PAM 26"Unreinforced Conc Beam 8/9/2023 <br /> DEMAND CALCULATION <br /> numbera'storirs If 2stones <br /> span L 1 6.0 it [max on,center pile spacing[ <br /> concrete.,to A 216 in2 'see attached <br /> concrete self weight SIN 225 plf [Includes total height w/o ACI34§14.5.1.7 redux) <br /> wDL OL 800 pif [2-story loading[ <br /> wit LL 250 pit 12-story loading! <br /> w LLr LLr 350 pif [2-storyloading! <br /> "Assuming a single span between 2 piles-in reality continuous spans between piles will have reduced moments- <br /> momentf,rom DL Mo, 4,613 lb-ft 55.4 k-in <br /> moment from tt M11 1,12S lb-ft 13.5 k-In A/max=awl' <br /> moment from St M_ 1,57S lb-ft 18.9 k-in <br /> shear from Ot Val 3,075lb 3.08 It <br /> shear from it V1, 750lb 0.75 k Vmax=ZwL <br /> shear from St V1u 1,050 lb 1.05 k <br /> Joctoredmoment Mcsra 77.5 k-in 1.4DL <br /> M,s,o 97.5 k-in 1.20L+1.61.1.+O.SSL <br /> MLIt. 110.2 k-in 1.20L+1.6SL+LL <br /> controlling foctored moment M. 110.2 k-in <br /> factoredsheor V1ua 4.3k 1.40L <br /> V.sra 5.4k 1.201.+1.6LL+O.SSL <br /> Vura 6.1k 1.201.+1.65L+LL <br /> controllingfoctored shear V„ 6.Ik <br /> contrallingfoctored bearing B. 6.1it Bmax=max <br /> STRENGTH CALCULATION <br /> concrete strength fc 2.5 ksi assumed <br /> light wt concrete mod.factor A 1 normal weight concrete <br /> flexure strength red.factor ¢r„ 0.6 AC1318-14[Table 21.2.11 <br /> sheorstrength red.factor � 0.6 ACI 31814[Table 21.2.11 <br /> bearing strength red.factor �x„y 0.6 ACI 318.14[Table 21.2.11 <br /> 'Note that per ACI 318.14 Ch.27.3.2 a phi factor of 0.8 con be used if dimensions and material properties are confirmed. <br /> moment of inertia I„ 11,016 IM 'see attached <br /> rlosticsectionmodulus Sr, 1,001 in3 'see attached <br /> tensfiberto NA c 1 13.0 in 'see attached <br /> nomflexure strength(Tcontrols) M, 250.3 k-in Mn Sd�Sm CONTROLS ACI 318-14[Eq.14.5.2.1a) <br /> = <br /> nomflexure strength(C controls) M, 2,127.1 k-in 3/. 0.Nil'.Q, ACI 318-14[Eq.14.51.1b! <br /> RESIDENTIAL CONCRETE M, 375.4 kdn Mn=7.S5Ajf7cSm X ACI 332.14[Eq.8.2.1.11 -not utilized <br /> flexurestrength 16M„ 150.2 k-In >Mu OK D/C=73.37% <br /> nom sheorttrength V. 14.4 k n=3 AV!r.A ACI34[Table 14.S.S.1(a)) <br /> sheotstrength 8.6k >Vu OK D/C=70.83% <br /> loaded bearing area As 74 in2 [IDEAL 2-7/8"Tru-Force Underpinning Bracket) <br /> supporting surface bearing area As 74ln2 Ili the supporting surface is>than loaded area) <br /> nom bearing strength 8, 156.6 k II,Ki/';11 ACI34[Table 14.5.6.1(c)] <br /> beoringsuength 94,0k >Bu OK D/C=6.51% <br /> Additional Verification fair. <br /> max concrete tensile strength f, 375 psi l=7.Sd ACI 319-14(Eq.19.2.3.11 <br /> roux beam tensile stress F, 130 psi l'• (M,e)/1rr <br /> t= <br />