Roof Joist Framing Construction Details

Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls.

Roof joist framing construction details.

In order to maintain the triangle shape there are specific requirements for how to fasten the corners of the triangle together. The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. Intermediate bearing with blocking panels. Continuing on from part 3.

End bearing with blocking panels. In addition to floor and roof framing details this guide includes recommendations for cantilevers and placement of web holes. End bearing in hanger supported by a beam. I joists in floor and roof applications.

End bearing in hanger supported by i joist s 44kb. The function of each component is. In a rafter roof all of these components are required to provide a stable roof. End bearing in hanger on a top plate.

Here we have a wood framed gable roof. End bearing with rim joist. Good installation begins with specification of the correct joist for the application. I joist construction details.

Let s consider a basic gable wood roof framing design. End bearing with rim board. Floor beam span tables of residential structural design we will now look at roof rafter and beam design. Not shown are the hip and valley rafters needed to tie the roof together where the rafters are framed at an angle to each other.

Load bearing or primary structure usually constructed in timber in a residential construction.