Because gravity works on a door in this way hinges are placed on the high side with the bottom hinge 10 inches from the bottom of the door and the top one 5 inches from the top of the door.
Hinge heights on internal doors.
Referring to door height.
This is the most common height for passage doors that lead from one room to another.
The upper hinge is 7 from top of door to top of hinge the bottom hinge is 9 from the floor.
Doors up to 60 inches need 2 hinges.
For a pre hung door measure the width and height of the slab the rough opening space between the studs with no door installed and the thickness of the jamb.
As a general rule you will want to use 1 hinge per every 30 inches of door or fraction thereof.
Opening heights 5 0 through 7 6 one and one half pair butt hinges from under head cl 9 3 4 top of door 9 5 8.
Standard widths for interior doors are 24 28 30 32 and 36 inches while the height must be a minimum of 80 inches.
Opening heights 3 0 through 4 11 15 16 one pair butt hinges from under head cl 9 3 4 top of door 9 5 8 from bottom of frame cl 10 3 8 bottom of door 9 5 8 2.
All 4 1 2 and 5 butt hinge spacing.
Doors over 60 inches but not over 90 inches need to use 3 hinges.
For a standard internal door its door lock is normally 42 from the floor to the centre of the latch.
An 80 inch door is called a 6 8 door pronounced six eight.