This keeps the top of the door from rubbing on the frame opposite the hinge.
3 hinge position on doors.
The height of the door is used to determine how many butt hinges you need.
Slide the hinge pins into place and remove the blocks from the door.
For doors between 90 inches and 120 inches use four hinges.
Wood metal door and hollow metal frame door is inset approximately 1 8.
Once these dimensions are known the formula can then be applied.
Use two hinges for doors up to 60 inches tall.
Connect the door to the jamb.
In general you ll want to use one hinge for every 30 inches of door height.
For doors over to 2 1 4 thick the hinge is set back 3 8 from the back face of the door.
The top hinge is a little closer to the top usually about 7 as it is always in tension with the forces applied.
Hinges are generally spaced out equally to also keep the door straight.
For doors up to 2 1 4 thick the hinge is set back 1 4 from the back face of the door.
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.
Opening heights 7 6 1 16 through 10 0 two 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 due to the the fractional calculations the bottom hinge cl may vary plus or minus 1 64.
Line up the two hinge plates so that the ones on the door match the ones in the jamb.
Hold the door in place using blocks under the bottom to support it if necessary.
Center hinge is equally spaced between top and bottom.
Bigger solid core doors require 3 or 4 or more hinges with ball bearings.