For header spans see tables r502 5 1 and r502 5 2.
Header height for french door.
The next jack stud will be cut to the height of your door plus 2 1 2 and minus the thickness of the bottom plate 1 1 2 as it will rest on top of this.
Your header size is determined by the load it carries.
The standard height of the rough opening for a door is the door height plus 2 5 8 inches.
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.
82 1 2 inches also happens to be the standard header height for windows and doors.
For example if the doors are 84 inches high don t forget french doors can be very tall then the opening will be 88 inches.
So if you re on the top floor you can use 2 2x4 s unless the building is 36 wide in which case you ll need 2 2x6 s.
Most door frames that are 4 feet wide or less require a 2 by 6 header.
Since the architects and engineers who designed the houses had calculated that 2 12 headers were deep enough and sturdy enough to span the longest 6 ft opening it was surely strong enough to span the more numerous smaller openings.
The horizontal support that spans the rough opening at the top of the door is called the header.
A typical header can be a four by eight or four by ten inch beam for two by four walls.
The additional room allows for a 3 4 inch top jamb a shim space above the door jamb and the thickness of.
This is also the top of the jack studs.
So allow an extra inch at the bottom and two inches at the top for the jamb.
Please note that due to the way the top jamb is installed the vertical measurements can be loose.
When we installed the headers even with the top of the standard 92 5 8 in.
If you re a novice framer then this is the height of the bottom of the window and door headers.
Typical specs are 9 ft ceilings ff to finished ceiling 7 0 window headers from ff and 6 8 door header above ff.
So your jack stud should be cut at 81 for a 6 8 tall door.
Which means the jack studs are 81 inches long typically.