Which one of the following linear methods of setting out a circular curve needs reference of the centre of the curve?
a) offset from chord produced
b) radial offset
c) perpendicular offset
d) successive bisection of arcs
Which one of the following linear methods of setting out a circular curve needs reference of the centre of the curve?
a) offset from chord produced
b) radial offset
c) perpendicular offset
d) successive bisection of arcs