Simple

Radius of simple curve formula

Radius of simple curve formula
  1. How do you find the simple curve?
  2. What is a simple circular curve?
  3. How do you find the deflection angle of a simple curve?

How do you find the simple curve?

Simple Curves

  1. PC = Point of curvature. ...
  2. PT = Point of tangency. ...
  3. PI = Point of intersection of the tangents. ...
  4. T = Length of tangent from PC to PI and from PI to PT. ...
  5. R = Radius of simple curve, or simply radius.
  6. L = Length of chord from PC to PT. ...
  7. Lc = Length of curve from PC to PT.

What is a simple circular curve?

2. WHAT IS SIMPLE CIRCULAR CURVE?  It is a curve consists of a single arc with a constant radius connecting the two tangents.  It is a type of horizontal curve used most in common.  A simple arc provided in the road or railway track to impose a curve between the two straight lines is the simple circular curve.

How do you find the deflection angle of a simple curve?

The deflection angle is measured from the tangent at the PC or the PT to any other desired point on the curve. The total deflection (DC) between the tangent (T) and long chord (C) is ∆/2. The deflection per foot of curve (dc) is found from the equation: dc = (Lc / L)(∆/2). dc and ∆ are in degrees.

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