Steel Beam Garage Door Header

Header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening.

Steel beam garage door header.

Cut a 2 x 6 piece of lumber and nail to the face of wall exactly in the center of the garage header. This piece of. What size and guage of steel i beam do i need for a garage header. Header spans are typical for a window and a patio door.

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. Most door frames that are 4 feet wide or less require a 2 by 6 header. Between 4 and 5 feet the header should be built 2 inches wide and 8 inches long while a larger opening needs a header that is 2 by 12. When in doubt use 2 by 12 inch headers.

The beam they have specified now is 3 1 2 x 12 x 18 9. 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 only added weight on the header will be 4 by 8 joists 3 4 plyw read more. 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. The person doing the takeoff had interpreted my request for an 18 9 garage door header to the least expensive 20 long beam. On previous projects i have been supplied a glu lam boise makes specifically for garage door headers that was 3 1 2 x 11 1 4 x 18 9. Measure the width of your door frame.

The structural ridge span represents the size of a large family room. Opening is 18 ft wide and beam will rest on 2 18 by 18 posts. Portal frame details within the irc specify simple span headers with a maximum finished opening width of 18.