Roof Joist Detail

End bearing with rim joist.

Roof joist detail.

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. These joists are typically used in roof structures. They are ideal for long spans including continuous spans over intermediate supports. Because i joists are straight and true it s easier for builders to avoid crowning and maintain a level framing surface.

The firring strips allow the roof to have the slope required to enable water run off to the rain water outlets. 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. 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. Tji joists floor framing details components.

End bearing in hanger on a top plate. The roof deck material is usually chipboard or plywood. These joists easily handle spans that wood systems cannot handle while their lightweight construction makes them much less costly than steel beams. Trus joist floor framing made simple.

I joists are used extensively in residential floor and roof framing. End bearing in hanger supported by i joist s 44kb. End bearing with blocking panels. Intermediate bearing with blocking panels.

Lh and dlh series joists are for longer span conditions and are capable of supporting larger loads.