Table of Contents
How far can you span a 4X12 beam?
Dimensional Lumber Deck Beam Span Chart
| Joist Spans | ||
|---|---|---|
| Douglas Fir-Larch, Hem-Fir, Spruce-Pine-Fir, Redwood, Cedars, Ponderosa Pine, Red Pine | 4X10 | 8′-4″ |
| 4X12 | 9′-8″ | |
| 3-2X6 | 6′-5″ | |
| 3-2X8 | 8′-3″ |
How big of a beam do I need to span 15 feet?
Wood beam size for a 15 foot span:- as per general thumb rule, for a 15 foot span, size of wood beam or lumber joist should be 2×10 which placed at 16″ apart from centre used for residential building or projects or construction in which depth of section of beam is 250mm (10″) and width of beam is 50 mm or 2″.
How much weight will a 6×6 beam support?
A 6×6 with 12′ span can support 2000 lbs. if you assume a conservative 1400psi bending stress. If you do a good job bonding the two members together, your double 6×6 can support more than 4,000 lbs.
How much weight can a 6×6 support horizontally?
What size lumber can span 15?
As the table shows, no 2×8’s meet the span and spacing requirements, but a 2×10 with an E of 1,300,000 psi and Fb of 1093 psi can span 15 feet 3 inches – more than enough. A 2×12 with an E of 800,000 psi and Fb of 790 psi also works, since it can span 15 feet and 10 inches.
Can a 2×10 span 16 feet?
The length of one 2×10 joist span depends on the wood species and how far apart it is from the next 2×10. A 2×10 southern yellow pine joist can span 16 feet and 1 inch without support. A doubled 2×10 beam can span 11′ without support for a deck that is 4′ wide.
How far can you span a 6×6 timber?
A #2 S-P 6×6 will span between 7′-0” and 8′-6” for joist spans of 6-feet, and 4′-2” to 4′-11” with joist spans of 18-feet depending on loads. Dead loads of 10 psf commonly reflect the weight of the structure and fixed materials, while the live or ground snow load can fluctuate from 40 psf to 70 psf.