The span for the girder is based on the size of an average sized game room.
16 ft garage door header size.
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.
And the garage door header is based on a 2 car garage door opening.
Many homeowners have two cars and need garage space to shelter them both.
Many home builders do not consider this a structural necessity but a style and price choice for the homeowner.
That for a 16 foot wide garage door the header should be at minimum 9 inches longer than the door.
If you are putting in an opening between 4 and 5 feet wide then you ll need two 2 by 8 headers.
The structural ridge span represents the size of a large family room.
The extra length for the header is to.
The procedure for constructing a header for 6 inch exterior wall framing can be modified for any wall thickness.
Width meaning your header should be 16 feet 9 inches long.
If you are creating an opening no wider than 4 feet for a door or smaller window then you need a 2 by 6 header.
If the opening will be 5 to 6 feet wide such as for double doors then you will need two 2 by 10 headers.
The standard size for double garage doors is 16 feet wide and 7 to 8 feet high.
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.
It is important to note.
Header spans are typical for a window and a patio door.
Table 1 consolidates loading sizes and cost data for all of the applications.
Window door garage door headers supporting roof wall floor loads.