The procedure for constructing a header for 6 inch exterior wall framing can be modified for any wall thickness.
18 ft garage door header.
Also see assumptions for table development.
For each application a pdf download is available.
Many homeowners have two cars and need garage space to shelter them both.
Wide window and door openings and in most situations be code compliant for openings up to 6 ft.
Width of garage door opening standard widths are 8 9 10 12 14 16 17 and 18 height of the garage door opening standard residential heights are 7 7 6 8 header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening.
18 ft garage door is the size that is suitable for you who have a oversized garage.
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.
In all but the most bizarre situations they ll easily carry the weight for 4 ft.
For single car garages include 8 x 7 ft 8 8 ft 8 9 ft 9 8 ft 10 7 ft and 10 8 ft.
Loading conditions are detailed below.
When in doubt use 2 by 12 inch headers.
Many 16 x 7 garage doors will be designed with a pair of single 8 foot garage door bays separated by a central post or column.
The person doing the takeoff had interpreted my request for an 18 9 garage door header to the least expensive 20 long beam.
Measure the width of your door frame.
The beam they have specified now is 3 1 2 x 12 x 18 9.
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.
Wide a common patio door width.
Most door frames that are 4 feet wide or less require a 2 by 6 header.
Window door garage door headers supporting roof loads only.
There are a few sizes of doors that are considered standard.
The standard size for double garage doors is 16 feet wide and 7 to 8 feet high.
Calculating header size is no picnic as you learn how to frame a window.
Many home builders do not consider this a structural necessity but a style and price choice for the homeowner.