Circular Arch Radius Formulas
A little basic math, plus some links to on-line calculators for figuring arch radius numbers. January 19, 2011
Does anyone know of a method for figuring a radius with the span and rise? Example: 24"span with a 9/16"rise.
From contributor R:
Draw it on Delta Cad and then Dim it.
Click here for higher quality, full size image
From contributor K:
Radius = length squared + (4X height squared) divided by (8 X height).
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