Roof Joist Detail

These joists easily handle spans that wood systems cannot handle while their lightweight construction makes them much less costly than steel beams.

Roof joist detail.

End bearing with rim joist. I joists are used extensively in residential floor and roof framing. The roof deck material is usually chipboard or plywood. They are ideal for long spans including continuous spans over intermediate supports.

Intermediate bearing with blocking panels. The firring strips allow the roof to have the slope required to enable water run off to the rain water outlets. End bearing in hanger supported by a beam. End bearing in hanger on a top plate.

End bearing with blocking panels. Depending on the roof build up a roof deck is then fixed to the joists over firring strips to provide the fall of the roof. End bearing in hanger supported by i joist s 44kb. Kcs joists are a version of the k series joists but designed for a constant shear and moment which allows for greater flexibility for locating extra loads such as those from rooftop units.

End bearing with rim board. Lh and dlh series joists are for longer span conditions and are capable of supporting larger loads. These joists are typically used in roof structures. Trus joist floor framing made simple.

Description the use of k series joists in the framing of floors and roofs offers huge advantages when compared to wood truss and steel beam systems.