1) Draw a
horizontal line at bottom of the arch (the black dotted line)
2) Measure
the bottom Horizontal (B measurement) to the ends
of
where the casing will begin and end
3) Measure
the Mid Height
The rise from the horizontal black dotted line
to the top of the arch (the A measurement)
Measure the inside of the arch.
4) Measure
the Incremental Heights
The various rises from the horizontal black dotted line
at various horizontal increments say at 12" apart
to the top of the arch.
Measure the inside of the arch
5) Are you
doing one side of the window or doorway or both ?
With these
measurements we will calculate how many feet you will need.
The minimum radius
is approximately 3 times the width of the moulding, however
this varies with
the thickness of the material (ie depth).
Check with us for
the minimum radius for your application.