CIVIL-SURVEY applications

Calculate elevations at any random point along a vertical curve.  View curve in graph window.  Increase vertical scale with "Y to X" ratio  Set Y to X ratio to 0 to hide graph window.  Use station increment / decrement buttons to conveniently move up or down station.

Calculate elevations at quarter points and elevations at any random point along a circular arc projected on a plane. Automatically solves for curve and plane elements.  Good for those cities and agencies that require planar curb return designs. 

 

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Derivation and math behind vertical curves.

 

Derivation and math behind the planar method.

 

Calculate a least squares fitted line from a text file of coordinates you place on your device's storage. The least squares fit minimizes the sum of the squares of the perpendicular distances from each point to the line.

Calculate a least squares fitted arc from a text file of coordinates you place on your device's storage. The least squares fit is achieved by finding center coordinates h, k, and radius r that minimizes the following sum:

All the same features as the original Vertical Curve Calculator with the following added features:


  • Input various combinations of vertical curve components and the calculator will automatically fill in the rest.

  • Input station to get elevation and rate of grade

  • Input elevation to get station and rate of grade

  • Input rate of grade to get station and elevation

  • Use 2nd button to toggle between possible double solutions for a given elevation