3 Hinge Position On Fire Doors

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.

3 hinge position on fire doors.

I have a few doors to hang shortly. All fire doors have an additional safety feature they must be self closing and self latching. I will have two doors one from the kitchen into the lobby the other from the lobby to the bathroom. The top hinge is a little closer to the top usually about 7 as it is always in tension with the forces applied.

This is accomplished through the use of a closer or spring hinge and a fire rated lockset or exit device. For heavier doors i use two 4 butt hinges or for very heavy doors three 4 butt hinges. Is there a preferred position for the top and bottom hinges up the edge of the door. 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. 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. They are all 44mm fire doors and a couple of them are 915mm wide so they are quite a heavy door. Hinges are generally spaced out equally to also keep the door straight.

170 180mm 6 inches from the top. It s a standard moulded door 1980 x 601 mm. The top hinge need to be positioned approx. Figure 1 shows a standard hinge arrangement.

For light weight internal doors two 3 butt hinges should be adequate. 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. How to determine hinge spacing on a door. Bigger solid core doors require 3 or 4 or more hinges with ball bearings.

It is unsafe to alter the as tested position of a hinge on a fire door without assessment from a suitably qualified authority. Light hollow core doors that are 6 8 only require 2 hinges with a cheap pin. 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.