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Discussion Starter · #1 ·
The deck at my house is a 16x16 fixed deck and was built with 2x8x16 joist.

A 2 ply 2x8 beam running parallel with the 16 oc joist is attached to a single ply 2x8 rim board. The rim board is attached to 6x6 post which are 16’ from house and 8’ apart. Blocking was used at 5.3’ and 10.6’.

Should I be worried and if so what fixes should I make?
 

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retired framer
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It is not the best connection to the posts and it is over spanned.
For the post connection you could notch those posts and put a 2x beam under the deck
Or to fix both problems you could add a beam with new posts 2 ft closer to the house and just cut the old posts off at the deck.
Or for just a little help you could just add a 2x4 or 2x6 to the posts with lots of screws to add support for the rim.
 

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Curious what you mean by “fixed deck”. Never heard that term.

Bottom line … the joist are too small. Max span for a 2x8 at 16” oc is a little less than 12 ft. I don’t see the 2 ply 2x8 beam you mention.

The construction is neatly done … just too small members. I bet there is a little bounce when you walk on it.
 

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retired framer
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Fixed to house, not free standing.
 

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Discussion Starter · #6 · (Edited)
Thanks for all the responses. I had a feeling it was under sized.

One of the pictures shows a 2 ply beam running parallel to the joist. Perhaps this is not a beam but rather a 2 ply rim joist?

Fixed meaning meaning fixed to house. Not free standing / floating.

yes the deck definitely has a noticeable bounce to it.

The post are cemented in the ground.
 

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retired framer
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Only two solutions: reduce the span or increase the size of the members.

Easiest solution here would be to add a correct size beam parallel to the house and about half way out.
What is the max span for 2x8"
 
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