Drilling Holes Plumbing Through Floor Joists

There are very specific locations and sizes in the code telling you what is allowed.

Drilling holes plumbing through floor joists.

Use our calculator to ensure your holes and notches are in the right position and do not affect the structural integrity of the building. Keep the hole at least 2 in. From the top and the bottom if it s a dimensional lumber joist. But modern living requires electrical wiring and plumbing.

I m here to let you know that you can safely drill holes in joists by following a few simple guidelines. Lean how to notch a joist for pipes and cables if you need to run pipes or cables under a floor. The hole cannot be larger than one third the depth of the joist so the maximum hole size for a 2 12 joist actual size 1 1 2 x 11 1. I noticed that quite a few people have a common concern that drilling holes in joists will make them weaker.

Where and how to drill joists for electrical cables or plumbing runs depends on what type of floor framing you have. But the pipe will be above floor level or thereabouts especially if you use a shallow trap. Holes cannot be closer than 2 to the bottom or top of a joist or to another hole or notch in the joist drilling floor joists. Notches in the top or bottom of joists shall not exceed one sixth the depth and shall not be located in the middle third of the span.

Use our joist notch and hole calculator to ensure that you get them in the right place in your joists. Drilling floor joists to run plumbing wiring or ducts can be tricky. You often require drilling holes in ceiling joists to pass any electrical or plumbing runs through the ceiling or floor. There are regulations in the uk you must follow in new build insta.

I hate putting waste pipe through joists for the reasons. In a perfect world floor joists are left whole to provide the greatest support. Holes bored in joists shall not be within 2 inches 51 mm of the top or bottom of the joist and the diameter of any such hole shall not exceed one third the depth of the joist. The maximum allowable diameter of a hole in any solid lumber joist is one third of.

Drilling holes in joists for plumbing and pipes is easy and we show you how in this video.