I-beam floor joists, or “I-joists,” are used in residential flooring and roof framing, according to the nonprofit trade association, APA – The Engineered Wood Association.

This will give you the location of the floor joists. If the distance between joists (nail heads) is 16 inches or up to 19 1/2 inches for engineered joists, the subfloor is probably 3/4 inch thick.

Dear Angie: I have a floor that has a broken joist under the house. The floor has caved in. How much will it cost to fix? The floor is wood. — Brad J., Cullman, Alabama Dear Brad: You definitely ...

The distance between each joist mark varies depending on the specific tape measure and construction, but typically you'll find I-beam joists positioned 19.2 inches away from one another, usually ...

A contractor will locate the broken joist and reinforce it by attaching a second joist next to it with structural screws and glue. The repair typically costs $250 to $300, according to experts who ...

Q:I am strengthening my house in the crawl space by putting oriented strand board (OSB) shear panels on the cripple wall from the mudsill to the floor joists. I am wondering if the same ...

: We have several squeaky floors throughout our house along with a stair step that squeaks. Anyway, we are getting new carpet and thought that now is the time to get rid of the noise. How should we ...

For smaller areas of repair, you can reduce the size of the new floor joists by one size. If you have a 2-by-10 joist, you can use a 2-by-8, or if a 2-by-8 joist, use a 2-by-6.

A floor joist should overlap the joist next to it by only 3 to 4 inches. The hump may be noticeable, but unless it’s causing cracks to the room’s walls and/or ceilings it’s not a major problem.

The second inspector said that the floor joists in the crawl space were too short and did not overlap one another. The floor joists are manufactured wood called I-joists.