6. a) Obtain expression for following elements of simple circular cur…

Question

6. a) Obtain expression for following elements of simple circular curve

i) Apex distance

ii) Mid ordinate

b) Two straights AD and BD are intersected by a line QP. The angles AQP and QPB are 150° and 160° respectively. The radius of the first arc is 650 m that of second arc is 450 m . If the chainages of intersection point D is 4756 m find the chainages of the tangent points and the point of compound curve