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That being said, a post can hold a tremendous amount of load! If a particular species of wood can support 1,000 psi, then an 8×8 post can hold 64,000 pounds! The limiting factor (reason to up-size) will likely be aesthetics and/or the number or type of joints needed.
How far can you span a 8X8 beam?
20 to 25 feet is a serious span – an 8X8 won’t even come close. From contributor P: Figure an inch per foot of span. 20′ would require 20″, 25′ would require 25″.
How much weight can a 4×6 post hold vertically?
So, which is better? The load capacity of a 3-foot #2 grade 4×4 is 17,426 pounds, and a similar 6×6 is 20,834 pounds or 16% better. However, an 8-foot 4×4 supports 6468-pounds and 2339-pounds at 14-feet, while a 6×6 is 18032 and 10550-pounds respectively – or 64% and 78% more load capacity.
How much weight can a log support?
The legal weight limits will vary by jurisdiction but, for example, in the southern states of the USA, they range from 80,000 to 88,000 pounds (36,300 to 39,900 kg) — about 40 short tons (35.7 long tons; 36.3 t).
Can you use a 4×6 as a beam?
Any timber size can be used as a beam. However you need to be an Engineer or other qualified building practitioner to determine appropriate spans/loadings for whatever you are constructing.
How much weight will a 6×6 post hold?
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 6×8 beam hold?
According to Western Woods Use Book by West Coast Lumbermen’s Association, 1973 edition, a 6×8 beam can support about 8,000 lbs., depending on species of wood, grade, etc. on an 8′ span.
How strong is a 6×6 post?
If you assume a conservative 1400psi allowable bending stress, a single 6×6 with 12′ span can support about 2000 lbs. So your double 6×6 can support at least 4000 lbs (possibly more if you do a good job bonding the two members together so that there’s no slip between the faces).
How long are 6×6 posts?
Product Specifications Size & Dimension 6-inch x 6-inch Length 22-ft Size & Dimension .15 Wood Treatment Treated Wood Specie Yellow Pine.
How much weight can a 2×8 beam hold?
A 2×8 will adequately support a dead load of 20 psf and a live load of 40 psf depending on some factors, including allowable span. This equates to a total load of 60 psf. Therefore, for a 2x8x10, the total load would equal 600 pounds per lineal foot.
How much weight can a 2×10 beam hold?
How Much Weight Can a 2×10 Beam Hold? A 2×10 beam is meant to hold up to 40 psf of live load and 10 psf of dead load, just like a joist. An SYP 2×10 single-ply beam can hold 144 pounds per lineal foot (plf). A double-ply beam of the same species can hold 288 plf and a triple-ply can hold 488 plf.
How much can a 4×4 wood post hold?
A 4×4 made out of high-quality, dense wood, like No. 1 Yellow Pine, can support up to 2 tons, or 4,000 pounds, as long as it has adequate vertical support. With corner boards at each end of a spanned 4×4 and vertical support every 1 ¼ foot, it can support the complete 4,000 pounds.
How much weight can you hang from a 4×4?
A 4×4 horizontally spanning 8-feet can typically carry 500lbs safely in the center, and 1,000lbs spread evenly across the span before sagging excessively. Properly supported at 16” centers, and it can support up to 4,000lbs.
Which is stronger 2×8 or 4×6?
In similar terms this is a measure of objects resistance to rotate. From contributor A: Unless it comes a ways from the pith of the log it will be stronger if it comes from a “boxed heart” timber. A good 2×8 will support as much as a 4×6.
Is a 4×6 as strong as a 6×6 post?
So are they? As long as you are talking about comparing posts with the same species of wood, then no, a 4×6 post is not as strong as a 6×6 post. A 4×6 is just a 6×6 with a third of the material cut away.
How far can a 4X10 span without support?
Dimensional Lumber Deck Beam Span Chart Joist Spans Douglas Fir-Larch, Hem-Fir, Spruce-Pine-Fir, Redwood, Cedars, Ponderosa Pine, Red Pine 4X8 4′-7″ 4X10 5′-5″ 4X12 6′-4″ 3-2X6 4′-3″.
Can a 6×6 span 14 feet?
A 6×6, like any piece of lumber, can span greater distances than any Code allows. 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.
Do I need 4×4 or 6×6 posts?
While there may be a handful of circumstances that only require the minimum 4×4 deck post, you will more than likely want to choose a 6×6 post for the deck. It provides more stability for larger decks, the ability to hold a heavier load, and more room for notching.
How far apart can 6×6 posts be?
Post Anchors are made to support a maximum raililng height of 42 inches. The maximum spacing of 4×4 deck posts should be 6 feet on center, while the maximum spacing of 6×6 deck posts should be 8 feet on center.
