Drilling Through LVL and lam beams

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Old 01-29-06, 02:54 PM
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Drilling Through LVL and lam beams

Hello, I had a question about drilling through engineered products when they are supported by a metal basement Jack or at the end on the foundation wall. I thought that there was not a problem dilling though them when they are supported underneath. Thanks for the help
 
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Old 01-29-06, 05:03 PM
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No engineered structural beam, truss, truss-joist, etc... can be drilled, cut or otherwise altered without either express permission and direction of an on site engineer or with the explicit documentation from the manufacturer indicating their approved drilling and cutting location(s) if any.

Unless you have the specs on the beam from the manufacturer, don't touch it and have an engineer advise you.
 
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Old 01-29-06, 05:53 PM
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Willyp923,

With any engineered product, it is best to consult with them on the limits to any alteration that might be needed before you start drilling or sawing.

Any LVL, GluLam, TJI CAN BE BORED but not notched. Standard dimensional lumber can be bored and notched BUT with limits, depending on application.

None can be done without documentation to indicate how or where.

As with Georgia Pacific products, as an example, they have limits with both the GPI and WI Series TJI joists. The GPI GluLam can be bored but again limits are set as to how large and where.

Products from Boise like the Versa-Lam can be bored but again NOT NOTCHED.

TrusJoist by Weyerhaeuser which also makes Microllam LVL and Parallam PSL can be bored but THEY CAN HAVE TAPERED END CUTS AS PER MANUFACTURER SPECS.

http://www.trusjoist.com/EngSite/pro...0&CategoryID=2

TimberStrand LSL CANNOT BE NOTCHED.

LVL's CAN BE BORED but NOT NOTCHED.

The illustrations will assist in what you can and cannot do.

http://dougaphs.smugmug.com/gallery/1164436/1/54363000

Hope this helps!
 
 

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