Measure the height of the rafters from the point where they meet the floor joist to the peak of the roof.
Stiffback roof framing.
Stick framing can also produce.
Also sometimes known as a strong back a strongback is a type of construction that helps to enhance the strength of some type of structure by adding a secondary support at a key point in the design.
Any conceivable load at the edge is more than balanced by the weight of the entire roof on the other end of the lever.
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.
Framing a roof is the last step in framing new construction.
It actually turns the whole roof into a lever with the fulcrum at the support wall.
For stick framed roofs that have horizontal joists rafters rest on the exterior wall plates and slope upward to meet at a center ridge board to form a gable roof.
Divide that number by four to determine how many braces you need to place on the rafters.
I run their design build division that specializes in custom homes commercial design build projects and sub divisions.