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Q1: Vertical alignment An equal-tangent vertical curve is to be constructed between grades of -3.0 % (initial) and +1.5%
Posted: Wed Jun 08, 2022 6:27 am
by answerhappygod
- Q1 Vertical Alignment An Equal Tangent Vertical Curve Is To Be Constructed Between Grades Of 3 0 Initial And 1 5 1 (20.2 KiB) Viewed 44 times
Q1: Vertical alignment An equal-tangent vertical curve is to be constructed between grades of -3.0 % (initial) and +1.5% (final). The PVI is at station 11+000 and at elevation 420 m. Due to a street crossing the roadway, the elevation of the roadway of the point M at the station 11+200 must be at 425 m. We need to design the curve. For that: 1) Write the position of the point M called XM as a function of the length L of the curve. 2) Starting from the parabolic equation of the coordinates (XM.YM) of the point M, calculate the value of the curve length L. 3) Calculate the values of the stations in PVC and in PVT.