Steel Beam Garage Door Header

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.

Steel beam garage door header.

Most door frames that are 4 feet wide or less require a 2 by 6 header. The structural ridge span represents the size of a large family room. Portal frame details within the irc specify simple span headers with a maximum finished opening width of 18. The only added weight on the header will be 4 by 8 joists 3 4 plyw read more.

Header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening. The person doing the takeoff had interpreted my request for an 18 9 garage door header to the least expensive 20 long beam. 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. The span for the girder is based on the size of an average sized game room.

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. What size and guage of steel i beam do i need for a garage header. The beam they have specified now is 3 1 2 x 12 x 18 9. This piece of.

Header spans are typical for a window and a patio door. When in doubt use 2 by 12 inch headers. Attach lumber to the face of the garage wall to the edge of the garage door header. Opening is 18 ft wide and beam will rest on 2 18 by 18 posts.

Cut a 2 x 6 piece of lumber and nail to the face of wall exactly in the center of the garage header. And the garage door header is based on a 2 car garage door opening. 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.