1/31/2024 0 Comments Lvl beam span table ridge![]() The middle bent is bearing the most load so we'll check it. Span 10'x2' on center x 25psf=500lbs per rafter Side girders, uniformly loaded, same calc as just above. The ridge should be an LVL, the supplier will spec it for you, prolly a triple 14" (if you want to play with it lvl Fb 2800 psi, E 2.0, Fv 280) 3 full dimension 2x12's in #1 passes, 1-1/4" deflection at full load, it's probably not going to feel real good walking on the roof at midspan. Not even close, deflection 13", its headin for the ground. It is uniformly loaded, calc here ĩ.5' of tributary width x 24' long x 25 psf=5700 lbs load. try 3 full cut 2"x10'sįb goes to 1619 the rest are the same, passes barely in bending, deflection at full load is 1". If built VERY light call the dead load 5psf so 25psf x 114sf=2850 lbsĪdjusted for wind, Fb for SYP is 1536 psi, E is 1.4, Fv is 280psiĮnter all that into the calc, nope. Code minimum live load is 20 lbs per square foot. ![]() The post is supporting half the ridge so 12'. The ridge is supporting half of each rafter pair so 9.5' of width. I'm assuming we're talking about southern yellow pine. Ply and osb don't really make a beam stronger, they might add a tad of stiffness but I just neglect them in any strength calcs. The other guys type faster, and we got a storm blackout blip partway through my post dang it.Ĭedar isn't beam material. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |