Replies

1. 
   kenkittle | Sep 16, 2006 02:17am | #1

   Try this: ( C squared divided by 8M ) + ( M divided by 2 ) = R
   Where C = chord length
   M = height (depth of curve )
   R = radius

2. 
   QCInspector | Sep 16, 2006 04:43am | #2

   Is this what your looking for?

   http://ca.geocities.com/web_sketches/circle_calculators/circular_arch/circular_arch.html

1. 
   JoeBartok | Sep 16, 2006 08:21pm | #3

   Builder, you say "radius" so it sounds like your arch is circular and I think that's the calculator you are looking for. Good thing I looked at the text in the link posted by QCInspector ... almost posted that again! :)

   There links to web based calculators for other curves at my Online Math Notes and Diagrams home page (scroll down to "Calculators").

   Joe Bartok

   Edited 9/16/2006 1:21 pm ET by JoeBartok

   Edited 9/16/2006 1:56 pm ET by JoeBartok

1. 
   builderbut | Sep 17, 2006 06:32am | #4

   thanks much for the help great web site