Below is a link to a roof plan with a section that is over framed see note 3.
Roof overbuild framing.
To provide a framework for the new trusses nail 2 by 6 inch strips of wood around the perimeter of the roof.
1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches.
Over framing is when you frame a roof section on top of another roof section such as when joining a l shaped roof with each section at right angles to each other etc.
Or if you want to raise the roof a bit more install fascia around the roof perimeter attached to the new soffit and nail the new roof deck to crown molding above the fascia.
Use of rafters trusses and a truss base polyline are demonstrated architectural home design software.
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.
Line length is the hyptenuse of the triangle whose.