Glulam beam too tall

[nino]

Is it possible to cut down a glulam beam from about 310 to 260 in height? I understand that it is practically possible, but will it be as strong as one that is 260 from the factory, or will it be weaker?

 

[Johan Gunverth]

If it is a 90 mm thick beam, that is exactly how the different widths are manufactured. They are bandsawed down to the width that needs to be delivered. I can't see your sawing being any sort of problem.

...furthermore, it's called "ripping" when you saw along the length.

 

[Rickard.]

Now I don't know what you need it for but a trick to reduce the height without losing almost any strength is to notch down what should lie on top of it in the beam. The upper part of the beam is in compression so it "doesn't care" if you replace small pieces with studs going in the other direction as long as you do it so they can help each other.

 

[nino]

This must be cut out to make way for the sewage.
The glulam beam will be on the floor below, so it lies against the ceiling, so notching it out is not possible.
There will be an opening at 220cm, so it's not a problem. I was afraid that one would have to duck to get under the glulam beam.

 

[ronolo]

No, modern glulam beams have different quality of timber in the different lamellas. You cannot split it in height and expect the same strength as equivalent new glulam.

Whether your particular beam can be split to 50mm needs to be calculated.

 

[nino]

Okay, is that so?
Yes, I won't bother splitting it.

 

[ronolo]

https://www.setragroup.com/sv/limtra/Om-limtra/hallfasthet/

 

[nino]

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[link]

Black on white, please