What size lumber can span 12 feet | Floor Joist, Ceiling joist, rafter & beam size for a 12 ft span
Spanning 12 feet with lumber requires careful selection of size and type to ensure adequate support and minimal deflection. The specific size needed depends on various factors, including the type of wood, the load conditions (live and dead loads), and whether the lumber is being used as a floor joist, ceiling joist, or beam.
Here's a general guideline for the size of lumber required to span 12 feet:
1) Floor Joists Southern Pine, Douglas Fir, or similar high-strength species: A 2x8 spaced 16 inches on center (o.c.) might be able to span up to 12 feet at live load of 40 psf and dead load of 10 psf and deflection limits L/360.
2) Ceiling Joists Ceiling joists carrying only ceiling loads can span greater distances. A 2x6 spaced 16 inches on center (o.c.) might be able to span up to 12 feet at live load of 20 psf and dead load of 10 psf and deflection limits L/240.
3) Rafter size: Roof rafter carrying only roof loads can span greater distances. A 2x6 spaced 16 inches on center (o.c.) might be able to span up to 12 feet at live load of 20 psf and dead load of 10 psf and deflection limits L/240.
4) Beam Size: For a beam spanning 12 feet and supporting significant loads (e.g., floor loads), A 2-2x10 might be able to span up to 12 feet.
what size lumber can span 20 feet,beam size for 20 feet span,can a 2x6 span 14 feet,how big of a beam do i need to span 16 feet,depth of beam for 20 feet span,how big of a beam do i need to span 20 feet,16 feet lumber,can a 2x4 span 10 feet,how big of a beam do i need to span 26 feet,lvl beam span calculator,how big of a beam do i need to span 24 feet,how big of a beam do i need to span 28 feet,how big of a beam do i need to span 22 feet
16 июн 2024
