Laserfiche WebLink
• <br /> • Langford Residence 2 <br /> 7507 E Heather Way <br /> Structural Calculations <br /> Gravity Analysis <br /> Lr Wb <br /> L =536.5 Max load to exterior walls from roof(plf) <br /> 2e' 2 <br /> w <br /> Lie:= (Lns + Df). + Ld•hw= 899.5 Max load to exterior walls from 2nd floor(pit) <br /> 2 <br /> Lftg•�= 15042•.5 + 2•.67) =351 Weight of footing(plf) <br /> Lfew L2e+ L 1 e+ Lftg= 1787 <br /> Max load to spread footing(plf) <br /> Bearing:= 1500 Assumed soil bearing capacity(psf) <br /> Lfew = 1.191 Width of footing required(ft) <br /> W f Bearing <br /> Existing 24"wide spread footing is adequate for gravity loads <br /> 2nd floor joists <br /> wb = 29 <br /> Existing floor joists are 16"TJI 360 @ 16"o.c.OK for 29 ft span w/L/360 deflections <br /> Size basement headers <br /> Iw:= 8 Window span(ft) <br /> ww:= (L7e+ L1 e) = 1436 Max load to 2nd flr header(plf) <br /> 2 <br /> ww 1w = 11488 Max moment(ft Ibs) <br /> Mmax 8 <br /> Mmax'12 =57.44 Section modulus required for stresses(in^3) <br /> Sreq:= 2400 <br /> 1 -12 <br /> pw:_ =0.267 Max deflection(in) <br /> 360 <br /> 5•ww 14.1728 <br /> 1Teq := 6 <br /> =276 Moment of inertia required(in"4) <br /> 384.1.8.10 <br /> Existing header is 6x12 glulam (S=132 in"3,I=792 in"4)—>OK <br /> By: J. Conner, PE, SE Langford Structural Calcs.xmcd <br /> 2/26/2020 <br /> LII 12 <br />