Quick Answer: Should I Use 4×4 Or 6×6 Deck Posts?

Can I use 4×4 posts for my deck?

In the past, many decks were built with 4×4 support posts (also called structural posts).

But these can bow seriously, even if a deck is only 3 feet off the ground.

For that reason, we strongly recommend that you use 6x6s instead, even if your building department does not demand them..

Should deck post be set in concrete?

There are several ways to set deck posts; we recommend attaching the posts to concrete footers above the ground. This helps to prevent wooden posts from rotting. Set footers a minimum of 6” below the frost line for your area to prevent movement during freezing temperatures.

How far can a 2×6 span without support?

In general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. A 2×8 up to 12 feet; 2×10 to 15 feet and 2×12 to 18 feet. The larger the deck, the larger the joists.

How much will a 6×6 post support?

For a 6′ long post of fir, 10,000lbs is right. Says this. When we build shoring for building collapses/urban search & rescue, our go-to guide is from the US Army Corps of Engineers. As this screencap from it will tell you, a 6×6 post can support 20,000 even when 12′ high—if cross-braced and secured properly.

Are 6×6 fence posts better than 4×4?

Instead of 4×4 posts, go with 6×6 posts. The extra size makes a huge difference. It’s a smart place to invest a little extra in your fence, because if your posts distort after they have been set in the ground with concrete, they are extremely difficult to replace.

How far apart should 6×6 deck posts be?

8 feetFor Building a Deck Railing, Deck Frame, or Fence 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.

How much stronger is a 6×6 than a 4×6?

6×6 vs 4×6 is a 50% increase. That is a lot. A lot will depend on the post spacing. If you go to smaller posts you will need more of them.

Are 3 2×6’s as strong as a 6×6 post?

One 6×6 will be 22% stronger than three 2×6’s. This assumes, of course, that the long side of the thinner boards is vertical, and that we’re talking standard dimensional lumber where a 2×8 is really 1.5×7.

How do you secure a post to a deck?

After the decking is finished, it will be time to install the top and bottom rails, balusters, top cap and any other parts.Mark rail post centers. … Mark for the exact position. … Cut the post and tack a guide nail. … Plumb and clamp the post. … Drill holes for the bolts. … Pound the bolts through.More items…

How do you anchor a deck post?

How to Attach Deck Post Bases to Concrete FootersHold your drill plumb. Use a drill with a hammer drill bit to install a concrete sleeve anchor into the center of the concrete footing.Don’t over tighten the bolt. Install the Adjustable Post Base to the sleeve anchor and tighten the bolt to secure the attachment.Place your foot behind the post when nailing.

How far can you span a 6×6 post?

12 feetWhat is the maximum span for a 6×6 beam? Each 6×6 beam only spans 12 feet, of which 2 of those feet are supported by a knee brace. So technically the beams only span 10ft.