A roadway goes from tangent alignment to a 275-m circular curve by means of a 100-m-long spiral transition curve. The deflection angle between the...

A roadway goes from tangent alignment to a 275-m circular curve by means of a 100-m-long spiral transition curve. The deflection angle between the tangents is 60°. Use formulas to compute X,, Y,, p, and k. Assume that the station of the P.1., measured.along the back tangent, is 200 + 00, and compute the stations of the TS, SC, CS, and ST.

(b) Prepare a table giving coordinates, spiral angles, deflection angles and chords (from the TS) for full stations and +20 points.