What is the closest distance a hole can be drilled to the edge of a joist?

The correct choice is based on general guidelines related to the structural integrity of joists. Drilling holes in joists can weaken them, so it’s essential to have established minimum distances to maintain their load-bearing capabilities.

For most building codes and industry practices, including those relevant to plumbing installations, a distance of 6 inches from the edge of a joist is often recommended. This distance helps ensure that the structural support provided by the joist is not compromised by the hole, allowing the joist to function effectively and safely under load.

Adhering to these guidelines is crucial, as drilling too close to the edge can lead to situations where the joist may split or buckle under pressure, potentially resulting in structural failure. This specific distance offers a balance between the need for running plumbing or electrical lines and maintaining the integrity of the joist.