Very hard to figure as the fly rafter load would counter weight the second rafter in s up lift pivoting on the gable rafter.
Garage door header on gable end.
Window door garage door headers supporting roof loads only.
They may suggest doubling up the trusses at the gable end in order to hand the header.
However it seems like picture one uses the most floor space.
Really kind seems to me like i ll save floor space by putting the doors on the gable end.
Window door garage door headers supporting roof wall floor loads.
That would take care of the wind and seismic shear loads.
The point load of the door should be within 2 of each outside wall you re putting another 6x6 posts there right.
A single flat 2 inch by 4 inch 51 mm by 102 mm member may be used as a header in interior or exterior nonbearing walls for openings up to 8 feet 2438 mm in width if the vertical distance to the parallel nailing surface above is not more than 24 inches 610 mm.
For each application a pdf download is available.
As such the wind loads c c on the gable end will be felt by the garage door header and sizing of the header may be affected by this increased biaxial loading situation d 6w or d 0 75 0 6w 0 75 s.
16 garage door headers the garage and other window and door openings are prescriptive see figure r602 10 6 2 alternate braced wall panel adjacent to a door or window opening a minimum 3 x 11 25 net header size is required for opening from 6ft to a maximum 18 ft.
With notches the gable roof overhang loads and the gable rafter partial load.
Loading conditions are detailed below.