The procedure for constructing a header for 6 inch exterior wall framing can be modified for any wall thickness.
Garage door header beam size.
The structural ridge span represents the size of a large family room.
Most door frames that are 4 feet wide or less require a 2 by 6 header.
Nail each ply of a beam with a minimum of 10d nails.
The span for the girder is based on the size of an average sized game room.
Header spans are typical for a window and a patio door.
Table 1 consolidates loading sizes and cost data for all of the applications.
Tables providing size selections for various beam spans and loading combinations for southern pine dimension lumber and southern pine glued laminated timber are available for the following applications.
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And the garage door header is based on a 2 car garage door opening.
When in doubt use 2 by 12 inch headers.
Window door garage door headers supporting roof wall floor loads.
Window door garage door headers supporting roof loads only.
The bottom of any beam may be notched only on its end.
The notch can not exceed 25 of the width of the board.
Header spans for exterior walls on buildings 20 wide.
Stagger the rest of the nails 32 o c.
Header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the 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.
Use two nails on each end and at splices.
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.