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Can holes be drilled in a Microlam beam that is 25' long x 3 thick X 16 high?

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βˆ™ 2007-07-21 14:21:29

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As a roof truss/I-joist/beam designer, I can tell you that you should not cut ANY holes in a microlam beam without consulting an I-joist/beam designer first. Microlam beams are not calculated to have holes cut in them. This requires special engineering.
Depending on the size of the hole and it's placement, and the load that the beam is carrying you may not be able to cut a hole in it at all. Considering the 25' length (if this is a clear-spanning beam) I can warn you that abeam designer is probably going to tell you to find a different solution for this issue.

Hope this helps!

2007-07-21 14:21:29
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