On 24/05/2018 09:19, Charles F wrote:
Hi All,

I'm about to hang a new front door, and have a query about hinge
positioning.

It's a heavy (55kg-ish) composite wooden door, and I'll use heavy duty
stainless ball bearing 100mm hinges. On almost all doors the top hinge
is traditionally placed 6-8 inches from the top of the door, and the
lower 10-12 inches up from the base. On this door I intend using a third
hinge, and the position of this is my query. On many doors a third hinge
is placed approximately centrally, but I've noticed that more recently
the third hinge has on some doors moved up to 12 inches or so below the
top hinge.

I can see that the latter would spit the load between the two top hinges
more effectively, but equally the centre of the door would be less
supported.

Any views on which to go for, plus advantages and disadvantages of the
two styles? Or does it matter....

Historically its always been 6" down from the top, 8" (or a bit more) up
from the bottom, and the central hinge midway between the other two. Its
a system that works well, so if doing a door, its what I would go with
unless there was a compelling reason for doing different.

I have noticed that things like hospital swing doors are often done with
the middle hinge much higher. Presumably its in response to the extra
weight of the fire doors, and amount of abuse they get with people
bashing beds and equipment into them every day - gravity would tend to
pull more on the top hinge than the others.

For a normal domestic door, the traditional arrangement is aesthetically
more pleasing IMHO.



--
Cheers,

John.

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