Where Do Hinges Go On A Fire Door

If you are fitting a third hinge to stop the door warping then it goes in the middle but if it is because the door is very heavy it goes closer to the top.

Where do hinges go on a fire door.

Nfpa 80 includes criteria for the use of hinges or pivots that do not meet the requirements listed in the standard for example hinges of a different material size or bearing type. If your spring hinges feature a hex opening on top of the barrel insert an allen wrench and turn it clockwise to increase tension. Wood door and wood frame the door is flush with the casing or face of the frame. Wood metal door and hollow metal frame door is inset approximately 1 8.

What are the requirements for hinges on a fire door ball bearing type hinges with steel base material are the allowable standard for rated hinges. Insert a locking pin. It is unsafe to alter the as tested position of a hinge on a fire door without assessment from a suitably qualified authority. Make another mark on the door through the center screw hole of the hinge and trace the outline of the hinge with.

Table 6 4 3 1 specifies the hinge size and thickness depending on the door size thickness and fire rating and the hinge type. With fire resisting doors becoming heavier there is a practice to fit two hinges at the top of the door with the third hinge at the bottom of the door. For example for a 1 3 4 inch thick door with a rating of up to 3 hours and a door size up to 4 feet wide and 8 feet high table 6 4 3 1 allows a mortised or surface mounted steel hinge 4 1 2 inches high and 0 134. For doors up to 2 1 4 thick the hinge is set back 1 4 from the back face of the door.

Specially constructed fire doors can have a rating of 4 hours or more this is very much dependent on fitting all of the correct materials our suggestion with such a heavy fire door is to fit 4 hinges with two of the hinges being fitted nearer each other at the top edge of the door.