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• <br /> Langford Residence 9 <br /> 7507 E Heather Way <br /> Structural Calculations <br /> Basement Shear Wales: Perforated shear wrap AFPA special provisions,4.3 <br /> -Basement end walls each have full height sections of concrete wall and are OK by inspection <br /> -Check North wall due to number of openings <br /> I := Ib = 55.5 Total length of north wall(ft) <br /> nl 0.6(Wlroof+ W12)vn I 55 Uniform Shear load to north wall, 1st floor(plf) <br /> :_ <br /> 2 ]n1 <br /> 18.5 pn 1 = 0.333 <br /> Percent of full-height sheathing <br /> : <br /> Inl <br /> Con1 •:= 0.50 <br /> Capacity adjustment factor <br /> vw (1:)d-Con1'730 = 183 Shear wall capacity(plf) <br /> Existing 3/8"sheathing grade panels, 8d nails @ 6"o.c.at panel edges, 12"o.c.field. <br /> OK for 183 plf(reduced).Therefore basement shear walls OK <br /> Transfer Shear loads to Foundation: <br /> 1/2"Anchor Bolt Capacity:NDS Table 11 E <br /> i := 1 5 Side member Thickness(in) <br /> s <br /> Z := 650 Bolt design value for 6"embedment depth (lbs) <br /> p <br /> CD:= 1.6 Load duration factor <br /> Zp•CD= 1040 Allowable load (Ibs) <br /> S := 36 Bolt spacing (in) <br /> Z -CD-12 Capacity based on bolt spacing(plf) <br /> C _= p C =347 <br /> 0.6 x 0S(Wt2+ Wtroof) <br /> =340 Max shear at south wall(plf) <br /> vtYP 23•C <br /> oeast <br /> Use 1/2"anchor bolts at 36"on center at east/west end shear walls <br /> Use 1/2"anchor bolts @ 48"o.c.elsewhere <br /> By: J. Conner, PE, SE Langford Structural Calcs.xmcd <br /> 2/26/2020 <br /> I\ h-L <br />