Plate 1: Simple Curves

• Problem 1:• The angle of intersection between two tangents

was found to be I = 8°24’, the location of the point of intersection is at station 8 + 105, and terrain conditions require a minimum radius permitted by the specification of 763.944-m. In order to lay-out this curve the following requirements must be obtained.

• A. The deflection angle on each stations.• B. The chord distance from PC to the stations.• C. Complete the curve data.

• Problem 2:• A simple curve has tangents AB and BC

intersecting at a common point B. The tangent AB has an azimuth of 194°18’ and the tangent BC has a bearing of N53°30’E, the radius of the curve is 97.6-m. Find the following:

• A. Degree of Curve base on arc definition.• B. External Distance.• C. The station of Pt. C if Pt. B is located at

8+112.8

• Problem 3:• The offset distance (shortest distance) of the

simple curve from the PT to the tangent line passing thru PC is equal to 120.20-m. The stationing of PC is at 2 + 540.26. The simple curve has an angle of intersection of 50°.

• A. Complete the curve data.