HP 32S-II Vertical Curve Program - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: HP 32S-II Vertical Curve Program (/thread-243559.html) HP 32S-II Vertical Curve Program - Ron Cardwell - 05-15-2013 I new a guy from many years ago who wrote a program to solve for the elevation on a vertical curve, given station, elevation at BVC. Grade in and grade out, if you enter station to solve for, the elevation would be given. I forgot his name (its been 15 years and I live in a different state now) Does anyone have a program that they have written? Re: HP 32S-II Vertical Curve Program - Eddie W. Shore - 05-15-2013 If you know the horizontal length of the curve: ```LBL E INPUT I INPUT G INPUT H INPUT X * + INPUT H RCL- G 2 / INPUT L / RCL X x^2 * + RTN Where: LBL E for elevation I = initial elevation (BVC) G = grade in as a decimal X = location of the station H = grade out as a decimal L = total horizontal length of the vertical curve ``` Hope this helps, Eddie. Re: HP 32S-II Vertical Curve Program - Thomas Klemm - 05-20-2013 Why do we have to INPUT H twice? Did you ever run that program? I think the correct formula to use is: E= I + G•X + H•(L - X) Kind regards Thomas