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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 H <br /> = input cells <br />Allowable Soil Pressure (ASP) <br />ASP =1500 psf <br />1.33ASP =2000 psf 1/3 Seismic increase of allow soil pressure <br />ρ =1 Ωo =1.25 <br />Vu = 11.2 kips Horizontal seismic force per column <br />h =9.00 ft 108 inches <br />Mu =126.00 kip-ft 1512 kip-in with Overstrength Factor <br />L =10.00 ft 120 inches Length of grade beam between two cant. columns <br />Cd = 2.5 <br />h1 =8 ft <br />Column Design <br />Call Out-W8X67 NOT <br />Fy =50 ksi Ry=1.1 t=0.5 in <br />Zx col = 70.1 in3 Sx=60.4 in3 WF, d= 9.0 in <br />Ix col = 272 in4 A=19.7 in2 tf= 0.94 in <br />ry=2.12 in rx=3.72 in bf=8.28 Pl's, l/t =14.26 <br />tw= 0.57 in Ix, WF&Pl's=302.21 in4 λr=35.88 OK <br />ΦMnx = 262.9 kip-ft OK Q= 31.22 in3 <br />Δ = 0.596 in Zx, WF&Pl's=82.81 in3 <br />CdΔCOL =1.491 in Col def w/ Cd factor Sx, WF&Pl's=67.16 in3 <br />CdΔTOTAL =1.707 in OK Includes GR BM rotation contribution from below <br />0.020h1 =1.92 in A, WF&Pl's=26.8 in2 rx, WF&Pl's=3.36 in <br />Lb = 17.7 ft OK! h1 < Lb then BRACING NOT REQ'D <br />Shear - Flow, f=n/a kip/in 5.568 kip/in <br />length of welding =n/a in Spacing of welding ≤n/a in <br />f'c =3000 psi 3 ksi <br />fy =60 ksi <br />b =30 in gross width <br />D = 24 in gross depth <br />d = 20 in depth to tension rebar <br />As = As' =2 in2 2-#9 steel area top and bottom <br />241285 <br />2701 Mc FADEN AVE, SANTA ANA, CA 92704 <br />Add'l Plates? <br />Lb = Maximun Umbraced Length per EQ. <br />(D1-2) AISC 341-16 for Moderately <br />Ductile Members <br />Steel Special Cantilvered Column per Table 12.2-1, ASCE 7-16 <br />Check h/tw ≤ λr per Table <br />B4.1a AISC Manual <br />Capacity 1/4" Fillet weld = <br />L <br />h <br />VuVu <br />Concrete Grade Beam <br />Ca <br />n <br />t <br />. <br /> <br />C <br />o <br />l <br />u <br />m <br />n <br />Ca <br />n <br />t <br />. <br /> <br />C <br />o <br />l <br />u <br />m <br />n <br />h1 <br />CL GR. BM <br />L1L1 <br />Page 11 <br />2701 W McFadden Ave <br />#F-I2/6/2025