3 Hinge Position On Fire Doors

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.

3 hinge position on fire doors.

I have a few doors to hang shortly. They are all 44mm fire doors and a couple of them are 915mm wide so they are quite a heavy door. For light weight internal doors two 3 butt hinges should be adequate. This means that in the event of a fire all of these doors will close and latch without a person s help.

1 3 4 doors 4 1 2 hinges hinge location chart. Figure 1 shows a standard hinge arrangement. It s a standard moulded door 1980 x 601 mm. Bigger solid core doors require 3 or 4 or more hinges with ball bearings.

190 200mm 9inches from the bottom. Hinges are generally spaced out equally to also keep the door straight. 7 8 2017 9 54 05 pm. From what i understand it is best to have one hinge near the bottom and two hinges near the top of the door to take the weight rather than three hinges equally spaced.

When a door starts to sag and hang crooked it always does so from the top so the upper part of the doorknob side is where it will start to catch. This is accomplished through the use of a closer or spring hinge and a fire rated lockset or exit device. It is unsafe to alter the as tested position of a hinge on a fire door without assessment from a suitably qualified authority. When hanging heavy exterior doors fire check doors hardwood doors or doors in a bathroom airing cupboard for example you should mark a line and position for a third hinge in the center of the door and frame as well.

All fire doors have an additional safety feature they must be self closing and self latching. Figures 2 3 and 4 detail hinge positions for doors where the hinges are operating at the near the maximum load capacity or where door closers particularly back check closers are in use and the door is in a high frequency of use environment. Light hollow core doors that are 6 8 only require 2 hinges with a cheap pin. Is there a preferred position for the top and bottom hinges up the edge of the door.

I have got the frames fixed in place and now need the hang the doors a first for me. The top hinge is a little closer to the top usually about 7 as it is always in tension with the forces applied. I will have two doors one from the kitchen into the lobby the other from the lobby to the bathroom. 170 180mm 6 inches from the top.