So a double-ply LVL 3 1/2" x 9 1/2" x 11 ft beam can support 353 x 2 = 706 PLF. Using the Uniform floor load (PLF) tables from LP corp, I see that a single Total weight of supported floor: 55 x 154 = 8470 lbs.Īssuming beam is carrying 50% of this load (and the exterior wall carrying the other 50%) 8470/2 = 4235 lbs.īeam is (nearly) 11ft long. Calculators Rafter Stock Size Calculator. Adjust by (1.75/d)1/3, where d is the depth of the member inches STANDARD SIZES AVAILABLE (INCHES) Widths 1½ 1¾ 2¼ 2½ 3½ Depths 3½ 5½ 7¼ 9¼ 11¼ 2. Rafters in an attic with rafter vents installed between them. Numbers in the table indicate load in pounds per lineal foot which may be. 1/5Adjust by (12/d), where d is the depth of the member inches 5. Conditions where the loading is not applied. Adjusted by CD 1.25 for construction load duration 4. Using standard load estimates from LVL span tables: 40 psf live, 15 psf dead = 55 lb/sqft. Adjusted by CM 0.90 for unprotected use 3.
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