The rafters carry the applied loads to the exterior walls.
Roof overbuild framing.
Rafters act more like the top chord of a roof truss than as a roof joist.
1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches.
A third gable roof is joined to a main roof in an overbuild remodeling situation.
The exposed edges of the 3 layers of rigid insulation are no longer exposed.
In a rafter roof all of these components are required to provide a stable roof.
Below is a link to a roof plan with a section that is over framed see note 3.
Figure 2 2 roof framing terms.
Line length is the hyptenuse of the triangle whose.
Needed to tie the roof together where the rafters are framed at an angle to each other.
Box beam gable framing new gable overhang is framed in the form of a box beam hanging off of a new layer of roof plywood roof sheathing cantilevered over the top of the 3 layers of rigid insulation.
Use of rafters trusses and a truss base polyline are demonstrated.
Also a link to elevations of house.