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.

Cut a 2 x 6 piece of lumber and nail to the face of wall exactly in the center of the garage header. Attach lumber to the face of the garage wall to the edge of the garage door header. The structural ridge span represents the size of a large family room. Table 1 consolidates loading sizes and cost data for all of the applications.

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. The beam they have specified now is 3 1 2 x 12 x 18 9. When in doubt use 2 by 12 inch headers.

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

Measure the width of your door frame. 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. 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. And the garage door header is based on a 2 car garage door opening.

Header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening. Opening is 18 ft wide and beam will rest on 2 18 by 18 posts. The span for the girder is based on the size of an average sized game room.