Timber Beams Doubled Height

[bylar]

We often review log homes and the manufacure often uses two log atop of each other for lintels etc. I usually reject this configuration and require a solid beam. Any thoughts on the subject?

 

[NKT]

I wouldn't count on a shear connection between the two (no composite behavior), but I would add the section properties and check bending and deflection before rejecting.

 

[msquared48]

I also do a lot - correct that - have done a lot of log homes, and the two logs over the lintel openings is OK as long as composite action is not relied upon.

Check the deflection based on the sum of the I's for the two logs. There is obviously a limit to this working for any span length based on the diameter and grade of the logs. This limit should be handled in the structural and framing notes.

Mike McCann
MMC Engineering

 

[MiketheEngineer]

Agree w/ M^2