Traditional wood joists are usually 2×8, 2×10 or 2×12 lumber, but modern houses often use engineered joists like trusses or I-joists because they provide better strength for less cost. Rim Joist ...

A rim joist, or band joist, is the framing member that runs along the perimeter of a floor system at the outer edge of the foundation. It serves as the end cap for floor joists and sits upon the ...