An equal-tangent crest vertical curve is designed for 100 km/h.
The initial grade is +3.4% and...
An equal-tangent crest vertical curve is designed for 100 km/h.
The initial grade is +3.4% and the final grade is negative. Draw
the curve. What is the elevation difference between the PVC and the
high point of the curve?
An equal-tangent crest vertical curve connects an initial grade
of +2.5% and a final grade of –0.5%. The curve is designed for 70
mi/h and the station of the PVT is 132+62 and is at elevation 833
ft. What is the station and elevation of the curve's high
point?
A vertical curve is designed for 90 km/h and has an initial
grade of + 2.5% and a final grade of -1.0%. The PVT is at station 3
+ 480. It is known that a point on the curve at station 3 + 440 is
at elevation 75 m. What is the stationing and elevation of the PVC?
What is the stationing and elevation of the high point on the
curve?
A vertical curve is designed for 75 km/h and has an initial
grade of + 3.5% and a final grade of -2.0%. The PVT is at station 3
+ 560. It is known that a point on the curve at station 3 + 520 is
at elevation 85 m. What is the stationing and elevation of the PVC?
What is the stationing and elevation of the high point on the
curve?
A vertical curve is designed for 55 mi/h and has an initial
grade of +2.5% and a final grade of −1.0%. The PVT is at station
114 + 50. It is known that a point on the curve at station 112 + 35
is at elevation 245 ft. What is the stationing and elevation of the
PVC? What is the stationing and elevation of the high point on the
curve?
Vertical Curves:
Problem 1
Given an equal tangent parabolic curve, a +0.50% grade meets a
-2.50% grade at Station 12+35.00 with an elevation of 305.12’, with
L = 6 sta. Calculate the high point station. Provide the elevations
at the PVC, PVT, High point, and at all full stations.
A vertical curve of 1000 feet is designed to connect a grade of
+4% to a grade of -5%. The PVI is located at station
1500+55 and has a know elevation of 500 feet. Find the
following:
The station and elevation of the PVC
The station and elevation of the PVT
The elevation of points along the vertical curve at 100-feet
intervals
The location and elevation of the high point on the curve
Use the following data to calculate the layout of an
equal tangent vertical curve
by offsets for every full station.
g1 = -1.20%
g2 = +3.50%
X PVI = 49+70
Y PVI = 5,893.48’
L = 1500’
, find the station and
elevation of the high (or low) point of the curve.
Compute and tabulate full-station elevations
for an unequal-tangent vertical curve to fit the requirements of
grade g1 = +1.25%, g2 = +3.75%, VPI at station 62+00 and elevation
1053.95 ft, L1 = 500 ft and L2 = 600 ft.
Tabulate station elevations (stakeout at full stations) for an
equal-tangent vertical curve for the following data given. (20 pts)
• 500-ft curve • g1 = -3.00% • g2 = -1.25% • VPI at station 38 + 00
and elevation 560.00 ft
A 276 m equal-tangent sag vertical curve has the PVC at station
3 + 700.000 and elevation 321 m. The initial grade is -3.5% and the
final grade is +0.5%. Determine the stationing and elevation of the
PVI, the PVT, and the lowest point on the curve.