Islamic University of Gaza Civil Engineering Department Surveying II ECIV 2332 By B elal A lmassri. Chapter 9 Route Surveying – Part 3 . Linear Methods for setting out simple circular curve. Method of offsets on the long chord. Method of offsets on tangents.
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Linear Methods for setting out simple circular curve.
Method of offsets on the long chord.
Method of offsets on tangents.
Method of radial offsets.
Method of deflection angles.
Notes and Examples.
There are three types of the linear methods to set out a simple circular curve.
Deflection Angles: the angles between the tangent and the ends of the chords from point PC.
This method is a geometric based method :
Two tangents intersect at PI with chainage of 2140.00 m and deflection angle of 10 ͦ 35 ` 2``
Da or D˳= 4 ͦ , Using the deflection angles method Arrange all the information needed.