Roof Beam Framing Plan

Supported by lally columns.

Roof beam framing plan.

The point at which all the rafters are attached to. Floor beam span tables of residential structural design we will now look at roof rafter and beam design. This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams. Framing a roof is the last step in framing new construction.

The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. Transfers the load of the roof through the raftersto walls below. Determining the ridge beam height. Some of these can support the roof and prevent ridge sagging and wall spreading.

Parts of a roof a ridge board is a horizontal member of the roof frame. In order to do roof framing properly it is important to understand the unique shape and dimensions of your roof since these will greatly impact the geometry of the roof frame. Collar ties rafter ties tension beams structural ridge beams. Ridge beam sits below the rafters.

The finished ridge beam height z above the top of the wall will be m plus the y height. While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below. Roof framing simply describes how a group of rafters and beams are fitted or joined together in order to provide support for the roof covering. Let s consider a basic gable wood roof framing design.