An unsymmetrical parabolic curve has a forward tangent of -8% and a back tangent of +5%. The length of the curve on the left side (PC) is 60m. What is the elevation of PC if the vertex is at elevation of 100m. ANS. 97m

A COMPOUND CURVE is composed of three simple curves (CURVE1, CURVE2 & CURVE3).Compute the stationing of PT if the stationing of PC is 6 + 623.56.CURVE1 Radius = 1,157.40 metersCURVE1 Long Chord = 470.80 metersCURVE2 Radius = 550 metersCURVE2 Long Chord = 185.50 metersCURVE3 Radius = 467.87 metersCURVE3 Long Chord = 153.75 meters

The azimuths of the back and forward tangent of a spiral curve are 220° and 290° respectively. If the length of the spiral is 80m and the degree of the circular curve is 4°, determine: a. The distance between the vertex and the middle of the curve. b. The short tangent at the SC point. c. The long tangent at the SC point. d. The station of CS if the station of TS is at (7+028).

The offset distance of the simple curve from PT to the tangent line passing through the PC is equal to 120.20m. The stationing of PC is at 2 + 540.26. The simple curve has an angle of intersection of 50° a. Compute the degree of curve. b. Compute the external distance. c. Compute the length of long chord.