Floor Joist Below Foundation Top

A floor s framework is made up mostly of wooden joists that run parallel to one another at regular intervals.

Floor joist below foundation top. Squaring a floor is done by making a 345 triangle on the top of the foundation. Notching wood and boring rules engineered i beam rules. I wasn t expecting this. You can drill 1 1 2 in.

You can never ever ever notch or bore through the top or bottom flange or chord. The larger the triangle the more square your floor will be. The two general types of floor joist construction used over the foundation wall conform either to platform or balloon frame construction. Floor joists are typically 2 by 8s 2 by 10s or 2 by 12s.

Every floor joist manufacturer has product literature and. The numbers stand for the lenght in feet 3 4 5. Instead i was expecting to see the floor joists sitting on top of the foundation wall. A joist is a horizontal structural member used in framing to span an open space often between beams that subsequently transfer loads to vertical members.

Some newer homes have manufactured i beam shaped joists. In fact most have little perforated knockout holes that can be punched out with the swing of a hammer. The hangers drop the floor joists below the top of the concrete foundation. Holes anywhere in the web.

Beams under the floor joists allow the floor joists to go over. Ceiling joists are usually 2 by 6s or sometimes 2 by 4s if it is an older home. Platform framing is by far the most common type used.