Portal frame details within the irc specify simple span headers with a maximum finished opening width of 18.
Garage door header detail.
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.
For instance if the width of the garage door is 8ft the rough opening should be 8ft 3 inches wide.
You get the picture.
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.
Amarr offers 300 styles of garage doors.
If the door is 7 tall frame the opening 7 1 5.
If it s 9ft the opening must be 9ft 3 inches and so on.
Header details 24 25 nailing on narrow face 25 allowable holes 26 bearing length requirements 26 tapered end cuts 27 multiple member connections 28 29 columns 30 31 product warranty 32 some sizes may not be available in your region.
To finish the opening cut the header and jambs from 2 lumber.
Depending on your opening the lumber width will be 6 to 8 wide.
Header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening.
For deeper depth parallam.
Choose from carriage house traditional and commercial garage doors in steel wood and wood composite materials.