Wide window and door openings and in most situations be code compliant for openings up to 6 ft.
How to build a header for garage door.
Building a structural header for a garage door opening can be handled on the jobsite and will offer the same structural support as more expensive solid wood beams.
Garage wall framing typically utilizes this technique encompassing the vehicle doors.
Header requirement 2 at minimum the header should be 12 wide with doubled 2 4 at opening and ceiling running the width of the door with a 2 4 in the center of the opening for the center bracket to attach to.
The jambs need to be 17 inches.
Most garage door openings are just rough openings when the home is built.
The opening must be finished framed before a garage door can be installed.
The procedure for constructing a header for 6 inch exterior wall framing can be modified for any wall thickness.
Wide a common patio door width.
Header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening.
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.
The technique of building a garage door frame is straightforward and a finished frame can be completed in an hour.
That would take care of the wind and seismic shear loads.