I Joist Roof Framing

Stick to the basics of simplified design and use dimensions that don t generate waste.

I joist roof framing.

The fascia board is the bottom plate and the ridge board the top plate. Conventional framing the first thing to understand is how a roof framed with wood i joists differs structurally from a traditional stick framed roof. They are ideal for long spans including continuous spans over intermediate supports. Keep it simple and remember.

In a typical roof framed with dimension lumber the rafters rest on the exterior wall top plate at the lower end and bear against a ridge board at the top. I joists in floor and roof applications. Good installation begins with specification of the correct joist for the application. Shed roof framing process explained step by step instructions.

A framer s guide to the installation process usp994 131 usp connector guide for trus joist products canada. Lp solidstart i joist benefits. Corbett grace their parents and even their kids are learning a lot about the many ways a few right many wrong to build a high performance home. Design properties 16 floor span and load tables 17 allowable holes 18 roof span and load tables 19 cantilevers 20 21 framing connectors 22 23 section 3.

Roof span and load tables 12 13 framing connectors 14 15 section 2. In addition to floor and roof framing details this guide includes recommendations for cantilevers and placement of web holes. Framing a shed roof is similar to framing a wall. Because i joists are straight and true it s easier for builders to avoid crowning and maintain a level framing surface.

Bci joists are specially constructed i joists with flanges made from strong versa lam laminated veneer lumber with oriented stranded board webs and approved waterproof structural adhesives providing outstanding strength and durability. Many performance rated i joists include in their trademarks allowable. They can be trimmed on site and long lengths allow ceilings and floors to be designed with fewer pieces saving installation time. I joists are used extensively in residential floor and roof framing.