Computer · Curve Setting out
In setting out a simple circular curve by the method of deflection angles (Rankine's method), what is the general rule for the total deflection angle of any chord?
- 1Total Deflection angle = total deflection angle of the previous chord + tangential angle of the present chord✓
- 2Total Deflection angle = tangential angle of the first chord
- 3Total Deflection angle = 2 × tangential angle of that chord
- 4Total Deflection angle = 1718.9 × chord length × radius
Correct answer
Total Deflection angle = total deflection angle of the previous chord + tangential angle of the present chord
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