Civil Engineering Reference
In-Depth Information
Configuration of window and door bucks
Calculating the internal dimensions of bucks
The bucks for windows and doors will need to be slightly larger than the actual window
or door to be fitted into the buck.
• For the width of the window buck:
Internal width of the window buck = External width of the window frame + 20 mm
• For the height of the window buck when the window sits on the floor:
Internal height of the window buck = External height of the window frame + 20 mm.
• For the height of the window buck when the bottom of the window sits on top of straw
bales:
Internal height of the window buck = External height of the window frame + 40 mm.
• For the width of the door buck / door jamb for a
single
door hinged directly onto the
door buck or posts:
Internal width of the door buck = Overall width of the door + 5 mm.
• For the width of the door buck / door jamb for
double
doors hinged directly onto the
door buck:
Internal width of door buck = Overall width of both doors held together + 7 mm.
French doors
When fitting a pair of doors the doors will either be joined in one of two ways. One of
the doors will have a mushroom stop fitted to it that the second door closes against it (see
Figure 5.6). Alternatively, a rebate will be taken out of one side of each of the doors so
that the doors join at the rebate, thereby providing resistance to airflow (see Figure 5.7).
It is possible to simply fix a cover strap to the face of one of the doors rather than to use a
mushroom stop, however the strength and security provided in this system is somewhat
lacking. When a cover strap is fixed to the door the strength and consequential security
provided is totally reliant on the strength of the glue and nails into the face of the door
whereas the mushroom stop is moulded from a solid piece of timber.
Figure 5.6
French doors with a mushroom door stop
