Decks typically are designed to support 55 pounds per square feet or psf of weight.
I beam pocket deck support at roof detail.
Detailed drawings single ply.
Detailed drawings single ply.
The joists will then extend over the beam in a cantilever position.
I have a client who wants a deck built approximately 10 off the ground with a roof.
These braces stabilize the post to beam joint and help resist lateral loads.
If the roof is attached to the deck it needs to be able to support the weight.
20 6x6 pt posts would be long enough to use as both deck support and roof support but the expense isn t justified because all that is needed to support the roof would be 4x4s.
If the deck doubles as a porch it needs to be able to support no more than 80 psf.
According to dca6 on any deck higher than 2 feet above grade diagonal braces should be installed between the posts and the beam and the posts and the joists.
For the strongest connection of beam to post place the support beam directly on top of the posts rather than bolting them to the side so the full load is transferred to the posts.
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Installing 2x8 deck beams if the outside edge of your deck is at least 17 above grade a double 2x8 beam should be installed to support the joists along the outside.