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.
What is the actual size of a 6×6 post?
The lumber industry defines standard wood post sizes as 4×4 or 6×6. The outside dimensions of the standard 4×4 measure 3-1/2″ x 3-1/2″, and the outside dimensions of the standard 6×6 measure 5-1/2″ x 5-1/2″.
Can a 6×6 be used as a beam?
The distance a 6×6 can span as a beam depends on the species of wood, grade, grain orientation, moisture content or seasoning, condition, and load. Southern Pine (SP) 6x6s will span 5” to 8” further than other common softwood species of the same grade.
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.
Can you put dry concrete in a post hole?
Fast-setting concrete is ideal for setting posts because there’s no mixing—you simply pour the dry concrete from the bag right into the hole, then add water.
Will pressure treated wood rot on concrete?
Simply setting the posts in concrete does create a condition that will accelerate rot in the bottom of the posts. With pressure-treated posts, the rot will be slow.
How long does pressure treated 6×6 last?
Pressure treated lumber can extend the lifespan of outdoor projects. It protects against rot and insect damage but requires regular maintenance and treatment to prevent moisture damage. With care, treated wood will last 40 or more years.
Can you stain pressure treated wood?
Not only can you stain treated wood, painting and staining pressure-treated wood is actually good for your new deck. Although the treated wood doesn’t need to be protected against rot, staining it will help reduce surface cracking.
Is it OK to set deck posts 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 much load can a 6×6 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 does a 6×6 cost?
According to Autocar, the massive G63 AMG 6×6 will carry a price tag of nearly 379,000 Euros, which presently works out to roughly $511,612. Yikes.
Can a 6×6 span 10 feet?
To answer you question, no a 6X6 will not carry that span, even if you have only a roof to support. The strength is in the height of the beam, not so much for the width.
