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earwig1

09:35PM | 06/26/04
Member Since: 06/26/04
1 lifetime posts
Bvtools
I would like to build a mezzanine in my two car garage. It would span 21 feet and be approx 4-5 feet wide.

I want this to span the 21 feet without a support in the middle if possible.

I was thinking of using three 2x6's bolted or nailed together.

What does everyone think?

Thanks

earwig1

Altereagle

06:36PM | 06/27/04
Member Since: 12/27/02
545 lifetime posts
You really need to get a structural engineer or a local carpenter to size that span due to the differing location & load factors...

... that said the min. supporting a light load roof only w/no snow is a (6) 5 5/8 x (12) 11 7/8 psl engineered beam spaning 21 ft.

Have a look at my deck site, www.decks-ca.com ... decks dash ca dot com ... go to the joist span page and use the US species calculator for headers just so you'll know the loads & what can be put into header width for your specific load, that will pop up a pdf table for you to look at.

http://www.altereagle.com/

Alter Eagle Construction & Design
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