Deck post size is important.
Second floor deck support.
Decks built ground level up to 2 feet off the ground can support up to 100 lbs per square foot.
So build your deck the right way from the ground and posts up.
The bigger you make your deck the more you ask of the framing timbers that hold up the deck s structure and the joists and beams that support the deck s floor can only span so far before the.
Check the structural soundness of your.
But decks 2 feet or higher will need added support.
When a deck is attached directly to the house it s supported by a long horizontal pressure treated.
But these can bow seriously even if a deck is only 3 feet off the ground.
In the past many decks were built with 4x4 support posts also called structural posts.
And if a deck is over 10 feet tall you should install bracing.
Inspect the concrete supports underneath on grade decks for cracks or damages.
It is up to you how high your deck extends onto the second story however a typical height is 8 9 feet.
The added support posts should be no more than 30 apart ideally placed in poured concrete.
For that reason we strongly recommend that you use 6x6s instead even if your building department does not demand them.
Sufficient for most hot tubs.