Framing With Floor Trusses

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

Framing with floor trusses.

Design versatility and the open space provided between the chords and webs of floor trusses for. Architects engineers and contractors are using floor trusses to create high quality squeak free construction with the added benefits of reduced framing time waste and callbacks. At most home improvement centers you can also have your lumber cut to the desired specifications when you order it. Floor joists are typically 2 by 8s 2 by 10s or 2 by 12s.

The joists span across a room or other area are supported on their ends and sometimes in their middles by load bearing walls or beams. To frame a floor that s 12 feet 3 7 m x 18 feet 5 5 m you would need 4 12 ft 3 7 m sill plate boards 4 18 ft 5 5 m rim joist boards and 9 18 ft 5 5 m main floor joists. Some newer homes have manufactured i beam shaped joists. Floor joists are horizontal framing members that make up the skeleton of a floor frame.

Ceiling joists are usually 2 by 6s or sometimes 2 by 4s if it is an older home. Structurally an open web floor truss resembles an i beam in that it puts most of its material along its top and bottom edges where stresses are greatest. To strengthen a truss the fabricator may double its top and bottom chords make side by side girder trusses use larger truss plates or stronger wood or use some combination of these. True floor joist span calculations can only be made by a structural engineer or contractor.