How To Jack Up A Floor Beam

The full table shows more lumber sizes.

How to jack up a floor beam.

Deteriorating floor joists posts or beams can be caused by termite infestation water damage or dry rot. It also shows the maximum that the beam can span for various numbers of such pieces of lumber built together this is indicated by 3 ply 4 ply and 5 ply. The solution to sagging floors or the damaged sills and joist ends that contribute to them often involves jacking. Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube.

If multiple beams need attention then use multiple jacks as simultaneously as possible. This span table excerpt shows two possible sizes of built up floor beams 2 x 10 and 2 x 12. This means the beam beneath the wall is not of sufficient size to carry the load. To check joists and diagnose the problem a pro must pull up the flooring and the subfloor to see what shape they re in.

A 3 ply with 2 x 10s would mean that three 2 x 10s are. Jack the beam up slowly so that it can gradually shift and readjust until level again. A common scenario is to install temporary jack posts and support beams then permanent posts and beams over new footings. Jacking up a floor and leveling it.

Make sure the jack is perfectly plumb and sits solidly level on the boards. Identify the problem as load bearing or non load bearing. In this style framing the entire structure will sag in that area usually causing cracks in walls ceilings or doors rubbing their frame you will need a proper footing under the post jack because your lifting much more weight if your correcting a sagging interior floor in ether style framing locate the main support beam in that area the large. Checking joists is easier if you have a basement or crawl space foundation because the joists are exposed.

Jack up the beam so that the house is level. If this is the case then you may want to enlist the help of professionals. A taut string stretched across the floor will show the amount of deflection and improvement. Then center a hydraulic ceiling jack directly under the beam s lifting point using a plumb bob.

If there is wall on top of the swagging area then it is a load bearing problem.