Timber Floor Joist Detail

I joist construction details performance rated i joists in floor and roof framing.

Timber floor joist detail.

Here you can view and download individual floor and roof details for your use. Some newer homes have manufactured i beam shaped joists. As the name trimjoist indicates our product can be trimmed on the construction site for a custom fit. For 2 1 2 and 3 1 2 flange widths toe nails may be used.

Trimjoist is the marriage of an open web floor truss and a trimmable wooden i joist bringing the best features of each to the relationship. Floor joists are typically 2 by 8s 2 by 10s or 2 by 12s. No more custom made floor trusses. The following table gives details of allowable spans and spacing between joists for the most common timber sizes used in floor construction.

The details on this site are recommended for all i joists. Ceiling joists are usually 2 by 6s or sometimes 2 by 4s if it is an older home. Alternatively you can download a free viewer by visiting this link and downloading the dwg trueview application. All the figures are based on normal domestic floor loadings where the floor construction is typically 18 25mm floor boards sheets with up to 12 5mm thick plasterboard and skim underneath.

Apa performance rated i joists pris are manufactured in accordance with pri 400 performance standard for apa ews i joists form x720 this performance standard provides an easy to use table of allowable spans for applications in residential floor construction allowing designers and builders to select and use i joists from various member manufacturers using just one set of span. A floor s framework is made up mostly of wooden joists that run parallel to one another at regular intervals.