The person doing the takeoff had interpreted my request for an 18 9 garage door header to the least expensive 20 long beam.
18 ft garage door header.
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.
Building a structural header for a garage door opening can be handled on the jobsite and will offer the same structural support as more expensive solid wood beams.
Wide a common patio door width.
Window door garage door headers supporting roof wall floor loads.
When in doubt use 2 by 12 inch headers.
Calculating header size is no picnic as you learn how to frame a window.
Many homeowners have two cars and need garage space to shelter them both.
For each application a pdf download is available.
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.
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.
The beam they have specified now is 3 1 2 x 12 x 18 9.
Loading conditions are detailed below.
Usually 18 ft door used to accommodate two vehicles in the garage.
There are a few sizes of doors that are considered standard.
Also see assumptions for table development.
Measure the width of your door frame.
Many home builders do not consider this a structural necessity but a style and price choice for the homeowner.
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.
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 procedure for constructing a header for 6 inch exterior wall framing can be modified for any wall thickness.
Wide window and door openings and in most situations be code compliant for openings up to 6 ft.
The standard size for double garage doors is 16 feet wide and 7 to 8 feet high.
