Is It Ok To Drill Holes In Floor Joist

In this case d is 7 and d 6 1 166inches or 1 3 16 maximum bore size.

Is it ok to drill holes in floor joist.

If you have manufactured floor joists you will want to consult the particular manufacturer s literature. Holes up to 4 in. If you intend to drill any holes larger than 4 inches 100mm in diameter please first check with the joist supplier manufacturer. For a 2 10 where actual depth is 9 25 inches the maximum allowable hole diameter would be just over three inches.

But modern living requires electrical wiring and plumbing. If you have manufactured i joists you can drill holes up to 1 1 2 in. Cutting notches and drilling holes in joists. Away from any end or load bearing wall second photo.

Do not drill holes within 6 inches 152mm from either end of the joists. In a perfect world floor joists are left whole to provide the greatest support. Holes cannot be closer than 2 to. The diameter of holes shall not be greater than 1 3 the depth of the floor joists.

Just stay 6 in. Your proposed bore size for the holes exceeds the maximum diameter allowed by over 1 full inch and would not be allowed. Diameter almost anywhere in the web area the area between the flanges. As part of any new installation work or a re wire a cable trunking or cable tray sometimes has to pass through an element of building construction such as a floor wall or beam necessitating the formation of a notch or opening in the element.

Can be drilled in the middle of the i joist away from the ends and load bearing wall.