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Location: <br />Project #:Engineer:LMC/PVB <br />Project:Villa del Sur Apts - Voluntary seismic retrofit Date:10/12/2024 <br />NEW - Two Cantilevered Columns with Grade Beam <br />Building G & I <br />241285 <br />2701 Mc FADEN AVE, SANTA ANA, CA 92704 <br />Sds=0 g Ev permited to be taken to zero per CBC-22 Sec 1605.2 <br />Axial Dead Load (D) from Exist (1) Col =8.5 kips <br />Axial Live Load (L) from Exist (1) Col =5.4 kips <br />L1=4 ft <br />Dimension Exist PAD FTG, b1=3.5 ft <br />Dimension Exist PAD FTG, b2=3.5 ft <br />Dim Exist PAD FTG to remain, b3=2.33 ft <br />Thickness Exist PAD FTG=1 ft <br />Thickness Exist SOG=4 in <br />Total Length Grade BM, B=18.00 ft <br />Weigh new Column, plf =67 <br />Weight of (1) New Column = 0.59161 kips <br />Weight of Grade BM=13.500 kips <br />Weight of (1) Exist PAD FTG=1.223 kips <br />Weight of Exist SOG=2.097 kips <br />B/6=3.00 ft <br />comb: (1.0+0.14Sds)D+L+ρQE/1.4 <br />M=QE=Vu (h1)= 84.17 kip-ft <br />Sum Vert Loads ΣP=(1+0.14Sds)D+L=47.03 kip <br />Sum Moments ΣM=ρQE /1.4=120.25 kip-ft <br />e=ΣM/ΣP 2.56 ft <br />e≤B/6 <br />qmin=154 psf <br />qmax=1936 psf OK qmax is less than allow soil pressure =2000 psf <br />OVERTURNING CHECK <br />Overturning M=120.25 kip-ft <br />Resisting M=423.24 kip-ft <br />D/C ratio=3.5 OVERTURNING OK! ratio ≥ 1.0 <br />comb: (0.9-0.14Sds)D+ρQE/1.4 <br />Sum Vert Loads ΣP=(0.9-0.14Sds)D=32.60 kip <br />Sum Moments ΣM=ρQE /1.4=120.25 kip-ft <br />e=ΣM/ΣP 3.69 ft <br />B-2e=10.62 ft e>B/6 <br />qmin=0 psf <br />qmax=1637 psf OK qmax is less than allow soil pressure =2000 psf <br />OVERTURNING CHECK <br />Overturning M=120.25 kip-ft <br />Resisting M=293.44 kip-ft <br />D/C ratio=2.4 OVERTURNING OK! ratio ≥ 1.0 <br />ALTERNATIVE ALLOWABLE STRESS DESIGN LOAD COMBINATIONS (CBC-22 Sec 1605.2) <br />FOUNDATION GRADE BEAM DESIGN <br />Page 20 <br />2701 W McFadden Ave <br />#F-I2/6/2025