How much stronger is a 6x6 than a 4x4?
How much stronger is a 6x6 than a 4x4?
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 long can you get a 6x6?
The recommended wood span for the 4x4 and 6x6 wood posts is 12 feet in length and 8 feet in height. 5" - the industry simply calls it 6x6.
How far can a 6x6 span without support?
In general, posts should be spaced no more than 8 feet apart. Some builders position them every 4 feet for a completely rigid frame. The maximum distance between footings is determined by the size of your joist material. Each 6x6 beam only spans 12 feet, of which 2 of those feet are supported by a knee brace.
How tall does a 6x6 post need to be?
A 6x6 8' in height with no load duration factor and of Doug Fir #1 or better is good for about 28 kips. But usually bearing stresses of the beam on the post or the post on support will control. As for your bow, I think that is due to shrinkage.
Are there really 2x6's instead of 6's?
They are actually a true 6"x6" post too and they are not usually just 2x6's glued and spiked -they are milled lumber glued spiked and then ran through a jointer to finish the outer dimension.
How many Kips can a 6x6 post hold?
RE: 6"x6" post strength. A 6x6 8' in height with no load duration factor and of Doug Fir #1 or better is good for about 28 kips. But usually bearing stresses of the beam on the post or the post on support will control.
What's the difference between 4x4 and 6x6 deck posts?
It is advisable to check your local ordinances as neighboring jurisdictions can have differences – deck posts being a common difference. Deck posts must be a minimum of 4×4 according to the IRC but many jurisdictions require a 6×6 post as a standard. To avoid code violations, many deck builders choose the 6×6 even if the 4×4 is acceptable.
