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B~am Mrk: DECK <br /> <br /> 3.5 x ~ I.:25 <br /> <br />1.8 kip,s t.8 <br /> ', <br /> <br /> S0an('Ft)= 12 <br /> <br />Both ends pinned <br /> <br />SUMMARY OF BEAM LOADS <br /> <br />UNIFORM L. OAI) OVER FUL. L SPAN: <br /> <br />Dead Load ~;; 60 psf <br />Live Load 240 psf <br />0,]; Soacr~g ,'-'1 ft <br /> <br />WOOD BEAM - DESIGN CRITERIA <br /> <br /> ;.. Allowable Bending~psi: Fb -= 1250 <br /> 2. Allowable Shear, psi: Fy = 95 <br /> 3. Mod of Elasticity, psi: E = 1700000 <br /> ,I.. Duration of toad factor <br /> 5, Live Load: D~ftmctic, n < [... / 480 <br /> 6. D+L Load: Defle,:~ion < L / 360 <br /> 7. Unbraced to~ edge <br /> in region of +M (ft): Lu = 0 <br /> ~8. Unbra,::ed b,2ttom edge <br /> in region of -M (ft): Lu = 0 <br />_9. Elf span lgth ratio: le/lu= 1.92 <br />10. Allowed c, verstress: (%)/100= .01 <br />I1. Exact Beam WIDTH (in): b = 3.5 <br /> <br />BEAI't ~IZE <br /> <br />Bending st r' e~;,~: <br /> <br />for -I--M ~', 5.4 h-fi; <br />.... It fb ,,-_ () rJf;:~z <br />For -M <br /> <br />Dead Load De'fle,:::t;i. on <br />Li ye Load De f 1 e,:: 't :[ ,::,r'~ <br /> <br />D+L Load Dr.i, f I e,:: t i ,:.,n <br /> <br />Allowable bending <br /> <br />f ()~ ...... M: F * b .... 1. :2 5 () 1: s :i <br /> <br /> <br />