Steel Beam Garage Door Header

Header spans are typical for a window and a patio door.

Steel beam garage door header. 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 span for the girder is based on the size of an average sized game room. 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. The structural ridge span represents the size of a large family room.

Header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening. Attach lumber to the face of the garage wall to the edge of the garage door header. The beam they have specified now is 3 1 2 x 12 x 18 9. Cut a 2 x 6 piece of lumber and nail to the face of wall exactly in the center of the garage header.

When in doubt use 2 by 12 inch headers. Opening is 18 ft wide and beam will rest on 2 18 by 18 posts. Table 1 consolidates loading sizes and cost data for all of the applications. 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.

This piece of. 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. The only added weight on the header will be 4 by 8 joists 3 4 plyw read more.

Portal frame details within the irc specify simple span headers with a maximum finished opening width of 18. 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. Most door frames that are 4 feet wide or less require a 2 by 6 header.