Reinforcing Floor Joists For Plumbing

Set a hydraulic jack and post under the beam and jack up the joists about 1 8 in.

Reinforcing floor joists for plumbing.

Where and how to drill joists for electrical cables or plumbing runs depends on what type of floor framing you have. Now it is time to use some wood and screw it into place on the original joist as well as the cross beam. Steps to head off a floor joist determine the location of your plumbing drain. Drill holes with a diameter of no more than one third the depth of the joist staying 2 in.

The new i joists should have plywood web stiffeners also. While searching around for a solution i came upon a company called metwood which produces a line of floor joist hole reinforcer technologies which attach directly to the side of the floor joist and are pre engineered to distribute the joist load around the larger up to 4 hole. Sometimes joists are notched at the end where they bear on a wall or sill. Screwing a piece to the joist on each.

Determine the size of your plumber box for a double header measure back three inches from your plumber box 3 is the width of a doubled header and mark a. You should use steel joist hangers when you do this. Plywood web stiffeners on both sides of the i joist on either side of the hacked one. Nailing two 2x4s together will work to span about three joists unless the sag is under a weight bearing wall.

A steel plate can be used the same way. Use a circular saw to start the cut and finish with a. From the top and the bottom if it s a dimensional lumber joist. Tack a beam under the sagging joists.

Keep the hole at least 2 in. Remove a section of the hacked i joist add new i joist perpendicular on both sides of the plumbing pipe using hangers. Jacking them up too fast may cause cracks in the walls and floors overhead. These joists may need reinforcin g to reduce bounciness sagging or excessive deflection in the floor or ceiling.

Step 4 reinforce the floors you will have to use a very sturdy piece of wood or some steel plating to reinforce the floor joists. A day until they re level. Away from the top and bottom. Tradespeople often need to cut notches or holes in floor and ceiling joists to run pipes ductwork or wires.

You can reinforce a notched joist that has not cracked by cutting two pieces of 3 4 inch plywood as wide as the joist depth and as long as the plywood sheet.