Portal frame details within the irc specify simple span headers with a maximum finished opening width of 18.
Building a garage door header.
Wide window and door openings and in most situations be code compliant for openings up to 6 ft.
In an attempt to construct portal frames some garages are built with one continuous garage header extending over two or three garage door openings as shown in figure a.
Attach lumber to the face of the garage wall to the edge of the garage door header.
Your header size is determined by the load it carries.
Show door and header size show overhead door size show header size sample floor plan dimension dimension provide scale sample.
If you are building a new bearing wall or cutting in a new doorway be sure to check your local building code span charts or consult an engineer to properly size the header.
So your jack stud should be cut at 81 for a 6 8 tall door.
Location and size of door and window opening.
If you are looking to save money on getting door headers you can use materials that you may already have on hand and do it yourself instead of hiring someone to do it for you you need to keep in mind that structural support is very important and the framed wall you are working with needs to be durable.
Size of headers over all doors and window openings.
Proposed size of garage.
Show size spacing and direction of rafters or trusses.
Cut a 2 x 6 piece of lumber and nail to the face of wall exactly in the center of the garage header.
In all but the most bizarre situations they ll easily carry the weight for 4 ft.
When in doubt build a double 2 12 header sandwich like we explain next.
Show window and header size.
Wide a common patio door width.
Last pull a measurement from the top of the 2 x 6 piece of lumber that you just installed to the ceiling of the garage.
The procedure for constructing a header for 6 inch exterior wall framing can be modified for any wall thickness.