Drilling Floor Joists For Plumbing

But modern living requires electrical wiring and plumbing.

Drilling floor joists for plumbing. These joists may need. Sometimes joists are notched at the end where they bear on a wall or sill. The picture above shows what can happen when an untrained plumber is working on your home. Say you need to drill through a floor joist that is 9 inches tall.

That also means because of the one third rule that that the hole cannot be wider than 3 inches. Engineered floor joists can be drilled only according to their manufacturer s guidelines the code specifies the maximum size of the holes you can drill or the notches you can cut where you can and can t place them and how far apart they can be spaced. There are very specific locations and sizes in the code telling you what is allowed. Let s review what is wrong with this particular joist and discuss what the proper technique is for.

If the cut outs are too large or in the wrong location the joist can be weakened and unable to support the load it was designed for. Holes anywhere in the web area of engineered i joists except within 6 in. Where and how to drill joists for electrical cables or plumbing runs depends on what type of floor framing you have. In a perfect world floor joists are left whole to provide the greatest support.

Drilling floor joists to run plumbing wiring or ducts can be tricky. Of walls and rim joists. That example is pretty typical for floor joists or if not close. Tradespeople often need to cut notches or holes in floor and ceiling joists to run pipes ductwork or wires.