Jacking Up A Floor Joist

After the old joist is lifted by the jacks the new joist will now sit on the supporting walls or wall and i beam in our case while the old is lifted off of the structure.

Jacking up a floor joist.

The idea behind sistering joists is that you jack up the sagging original joists add the new ones next to the old and join them together. Figure 3 jacking up floor joists. By jacking up the ceiling of the basement you. The only tools required is a bottle jack string straight claw hammer circular saw and a light source.

If a crack or sag is isolated to one area the sister joist should extend at least 3 ft. Make repairs to settling piers and weak joists to fix swagging floors and roof lines. Jacking up a floor and leveling it is easy with these simple instructions. Set a hydraulic jack and post under the beam and jack up the joists about 1 8 in.

A day until they re level. On both sides of the problem area. The 4 inch lally posts can be replaced by 6 x 6 inch lumber. Jacking them up too fast may cause cracks in the walls and floors overhead.