floor joist spanning 20',what size should the joist be?

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2007-09-12 12:19:10 · 5 answers · asked by Bro. John 1 in Home & Garden ➔ Decorating & Remodeling

2 X 12, you would be better off getting joist made out of plywood and 2 x 4's, stronger and less likely to bend or settle

2007-09-12 12:53:57 · answer #1 · answered by Pengy 7 · 0⤊ 0⤋

Ditto on the recommendation to get a structural engineer involved. It's impossible for anyone to do this given the information you've posted.

2016-05-18 00:58:23 · answer #2 · answered by ? 3 · 0⤊ 0⤋

Get TGI's designed for that span. That is a engineered joist.

2007-09-12 14:44:37 · answer #3 · answered by candyman 4 · 1⤊ 0⤋

Look into engineered joists.
Size depends on loading.

2007-09-12 13:02:20 · answer #4 · answered by Irv S 7 · 0⤊ 0⤋

See http://bestfreecallonline.com/real-business/

2007-09-14 02:52:15 · answer #5 · answered by Anonymous · 0⤊ 0⤋