Floor Sagging Due To Cantilever

The hump is where the down sloping cantilever meets the main floor.

Floor sagging due to cantilever.

The room is about 10 wide and 16 long. The design negative moment m sd at uls may be reduced by approx. The cause of these may be the same or may be different. The joists are perpendicular to.

A homeowner can. If the reason for sloping is due to a cracked framing member then repairing the framing member at fault may prevent additional sloping. The main floor will also have a little normal slope due to deflection so you want the cantilever really really stiff so you don t notice any change in slope where they meet. Set a hydraulic jack and post under the beam and jack up the joists about 1 8 in.

Jacking them up too fast may cause cracks in the walls and floors overhead. Sorta like the opposite of what you have here. A day until they re level. Nailing two 2x4s together will work to span about three joists unless the sag is under a weight bearing wall.

The other category describes floors that might generally be level from end to end but within that span may have sags or dips. Tack a beam under the sagging joists. Sagging cantilevered diningroom i checked out a small drywall job the other day and noticed the 2nd floor was sagging. A common scenario is to install temporary jack posts and support beams then permanent posts and beams over new footings.

One category describes floors that have a general overall slant. A taut string stretched across the floor will show the amount of deflection and improvement. Sloping floors verses sagging floors. Not all floor problems are the same.

These terms are related and a sagging floor actually has a slope from each side of the sag. First extermination is in order followed by replacement of the damaged floor joists and subfloor. If your floors are sagging due to insect damage the fix is a two step process. Basically its a diningroom that cantilevers approx 8 past a solid wood beam.