Extending a glulam beam by splicing another on it

[Dave169]

Is it possible to extend a glulam beam (5.125" x 12") approximately 40" by splicing another glulam beam next to it?

I assume the overlap needs to accommodate a bolt pattern to withstand bending and shear stresses. Are there other factors to be considered?

A contractor put to short of beam in and it can be easily extended by splicing another on it. It cannot be replaced easily with a new beam and this is why a splice is being considered?

Thanks for your help

 

[dgkhan]

Yes. Normally overlap length is 3 feet.

 

[MiketheEngineer]

Check with the Glulam mfg.

Based on the loads - this may not be too easy or even possible.

 

[RARWOOD]

Add a column or replace the beam. If the beam is short by 40", more than likely the glulam mfg. will not assume any liability if the beam is extended. I work for a glulam wholesaler, and speaking from experience I don't ever think we would give some one permission to do what you are talking about doing.

 

[pinehurst]

We just completed a glulam repair project in which the beams projected from the interior to the exterior of the building envelope supporting the balconies. The exterior portion were completely consumed and had to be cut-off at the building wall. We used a steel shoe, 1/8" thick extending 24 inches each side of the splice. Worked just find and in that regard, the beam stays in the same plane.