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Re: Cutting a Glulam Beam

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The APA has various articles published on glulams and they might give some
guidance on what to do. The bottom chord of the beam has the tension
laminations which are usually 5% of the beam construction and removing them
would be critical to the strength of the beam. It is not recommended to
remove any laminations from the beam top or bottom.

I would suggest replacing the beam with microlams or a steel beam dependent
on the loading conditions.

Jamie Lawson  P.Eng.
MJL Engineering
Abbotsford BC, Canada
-----Original Message-----
From: Seaintonln(--nospam--at) <Seaintonln(--nospam--at)>
To: seaint(--nospam--at) <seaint(--nospam--at)>
Date: Wednesday, June 30, 1999 11:40 AM
Subject: Re: Cutting a Glulam Beam

>In a message dated 6/29/99 10:37:30 PM Pacific Daylight Time,
>seaint-ad(--nospam--at) writes:
><< One of my clients wishes to install a garage door to his two car garage.
> The header beam is too low and needs to be reduced in depth by about 4.5
> inches. One of the solutions proposed by the client's contractor is to
> remove the bottom three laminations and add a new post + pad  about
> mid-span. The current Glulam beam is 21 inches deep. It works as a 16.5
> inch beam for the reduced span.
> Question: Is there a problem if he cuts 4.5 inches from the bottom of the
> Glulam?
> Shafat >>
>Have you recommended a sectional door mounted on the face of the GLB from
>Theoretically, I think it would work, but realistically, I can't see the
>contractor having the control to do this cleanly.