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Re: support for a loft

From: info@builderswebsource.com
Category: Carpentry and Framing
Date: 25 Aug 2000
Time: 18:25:40
Remote Name: 207.82.209.113

Comments

Depending on how the loft is built, it's possible to run a glulam or microlam beam across the entire front of it, so long as the beam is properly sized, supported, and secured at both ends. However, if this isn't feasible, and there is no significant load-bearing weight on the loft other than live load due to people, you'll probably be fine with 4x4 or 6x6 posts on 4-foot centers and each end, so long as you have a substantial double rim joist along the front side -- such as (2) 2x12. Proper anchoring is critical. Since it's difficult to give structural advice without drawings and loads, you must always consult a structural engineer who can do a proper job sizing the beams and specifying the anchoring details. Furthermore, any structure, such as this must have approval of your building department. Some people have hastily built structures - especially outdoor elevated decks - without proper structural engineering up front, only to have the structure collapse due to heavy live loads, natural forces, or improper support. Occupant safety always comes first.  Never short-circuit the engineering or inspection phase of your project and be certain you meet or exceed all model building codes in your area.

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