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Re: Removing a bearing wall and installing an LVLFrom: info@builderswebsource.com
Category: Structural
Remote Name: 63.198.181.43
Date: 31 Aug 2002
Time: 03:57 PM
CommentsWithout having exact as-built plans of your existing home and knowing other factors such as how the 2nd-story loads are transferred to the proposed beam (including any point loads), snow loads, wind loads, seismic loads, and roof loads, we cannot estimate the size of beam required. However, as a general rule of thumb, to span 24 feet and support a 2nd story, a sizable beam will be required, such as a glulam or steel I-beam. LVLs or multiple LVLs may work, depending on the load, but our experience shows that a more substantial member may be required. For example, in our home, we have a beam about the same size (24 feet) supporting a second story load over the garage. This beam is a Douglas Fir glulam measuring approximately 6-7/8"x19.5" -- or as you see, one heck of a heavy beam. This beam is resting on massive columns, one on each end, anchored together with steel column-beam saddles and large hex bolts. Massive foundation holddowns anchor the columns into the foundation to transfer the load. Plywood sheerwall stabilizes the structure and helps to prevent lateral movement or racking. We urge you to consult with a licensed structural engineer who can evaluate your as-built conditions and run calculations for the beam. Anchoring details are also important and should not be overlooked. Builders Websource
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