What is the maximum allowable percentage of depth for boring in solid sawn beams?

The maximum allowable percentage of depth for boring in solid sawn beams is a third of the depth. This guideline is based on structural integrity and safety considerations. Boring too deeply could compromise the beam’s load-carrying capacity, as it reduces the effective material resisting bending and shear forces.

Allowing for boring up to a third of the beam's depth provides a reasonable balance between utility and safety, ensuring there is sufficient remaining material to support loads. This standard helps to maintain the structural performance of the beam while still accommodating necessary plumbing or mechanical installations.

Adhering to this guideline is essential for maintaining compliance with building codes and preserving the overall stability of the structure. This is particularly crucial in applications where beams are subjected to significant weight or stress.