Measure 10 inches from the bottom of the door and make a mark with the pencil.
Hinge spacing on interior doors.
Third hinge centered between top and bottom hinges.
On 3 1 2 hinge preparation for 1 3 8 doors the standard for 6 8 non fire rated frames is two 2 hinges.
Location of hinges on doors us standards procedure top hinge 5 127mm from frame rabbet to top of barrel.
Referring to door height.
However manufacturers do periodically revise their hinge and strike spacing therefore the sdi strongly recommends that individual manufacturers be contacted to verify dimensions.
Doors over 90 inches but not over 120 inches 4 hinges are recommended.
Hinges are generally spaced out equally to also keep the door straight.
All 4 1 2 and 5 butt hinge spacing.
Make another mark on the door through the center screw hole of the hinge and trace the outline of.
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.
Doors over 60 inches but not over 90 inches need to use 3 hinges.
The top hinge is a little closer to the top usually about 7 as it is always in tension with the forces applied.
Bottom hinge 10 254mm from bottom edge of barrel to finished floor.
Light hollow core doors that are 6 8 only require 2 hinges with a cheap pin.
How to determine hinge spacing on a door.
Bigger solid core doors require 3 or 4 or more hinges with ball bearings.
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.