Laserfiche WebLink
Maximum Span Calculatcr-fpr Joists & Rafters Page 1 of 2 <br /> IFTF <br /> Species Hem-Fir 7 <br /> Size 2x4 W <br /> Grade No. 2 <br /> Member Type Rafters (Snow Load) <br /> Deflection Limit L/18o <br /> Spacing(in)1124 <br /> Wet service conditions? <br /> Exterior Exposure No <br /> Incised lumber? <br /> N o <br /> Snow Load(psf) 25 <br /> Dead Load(psi .5 <br /> Calculate Maximum Horizontal Span <br /> Go to Span Options Calculator for Wood Joists & Rafters <br /> LIMITS OF USE I HELP , RESTART <br /> riAvailable on the ' ' ' Span Calculator for Wood Joists and Rafters available for the <br /> • • Store iPhone. <br /> Span Calculator for Wood Joists and Rafters also aval lable for the <br /> Google Android OS. <br /> The Maximum Horizontal Span is: <br /> 7 ft. 5 in. <br /> with a minimum bearing length of 0.37 in. <br /> required at each end of the member. <br /> Property I Value <br /> Species IHem-Fir <br /> Grade I No.2 <br /> Size I 2x4 <br /> Modulus of Elasticity(E) 1300000 psi <br /> Bending Strength(Fb) 1686.19 psi <br /> Bearing Strength(FSP) =F405 psi <br /> Shear Strength(F,) 172.5 psi <br /> While every effort has been made to insure the accuracy of the information presented, and special <br /> effort has been made to assure that the information reflects the state-of-the-art,neither the American <br /> Wood Council nor its members assume any responsibility for any particular design prepared from <br /> this Online Span Calculator. Those using this Online Span Calculator assume all liability from its <br /> use. <br /> http://www.awc.org/calculators/spancalc/timbercalcstyle.asp?species=Hem-... 6/24/2016 <br />