Question

A 3.0% grade passing at station 20+00.00 at an elevation of 99.10 m meets a -2.0% grade passing at station 20+50.00 at an elevation of 99.60 m. Please note that these two elevations and stations DO NOT correspond to BVC and EVC.

a) Determine the station and elevation of the point of intersection of the two grades.

b) If the highest point on the curve must lie at station 20+55.00, find the elevation of this point and the length of the curve that meets these conditions.

c) Calculate the station and elevation of the beginning of the vertical curve (BVC), and its end (EVC)

d) Layout this curve at 100 m stations.

Answer #1

Problem
3. A
+2.35% grade meets a -2.20% grade at station 45+50.00 and elevation
695.00 feet (PIVC or VPI). An 800-foot (8 station) vertical curve
is planned. Draw a sketch and find the following:
a. The station and elevation of the
PCVC (BVC) (5 points)
b. The station and elevation of the
PTVC (EVC) (5 points)
c. The elevation (on the curve) of
station 44+00.00 (5 points)
d. The vertical offset for station
44+00.00 (5 points)
e. The station and...

.A crest vertical curve joining a +3 percent and a-4 percent
grade is to be designed for 40 Km/h. If the tangents intersect at
station (K20+ 60.00) at an elevation of 200 m, determine the
stations and elevations of the BVC and EVC. Also, calculate the
elevations of intermediate points on the curve at the whole
stations.

For a vertical curve with the following data: L = 425.00 ft.;
g1= -2.50%; g2= +0.90%; VPI sta = 28+50.00 ft.; VPI elev = 609.35
ft., determine the: a. (1 pt.) BVC station b. (1 pt.) EVC station
c. (1 pt.) BVC elevation d. (1 pt.) EVC Elevation e. (3 pts.)
Elevations on the curve at full stations f. (3 pts.) Elevations on
the tangents at full stations g. (2 pts.) Tangent offsets at full
stations h. (2 pts.) High/low...

A
-6.00% grade and a +2.00% grade intersect at station 20+00. The two
grades are to be connected by a vertical curve 400 ft long. The
elevation of the BVC is 348.52.
What is the...
a. Elevation on the curve of the low/high point?
b. Elevation of the curve at station 19+00
c. Elevation of the tangent at station 21+00
d. Elevation of the curve at station 21+50
e. Elevation of the curve at station 18+50

A
+9.00% grade intersects a -7.00% at station 50+70.26 and elevation
239.12 ft. A 400.00 ft. curve will be used to connect the two
grades. Compute:
(1) Station and elevation for the curve's endpoints
(2) Elevations and grades at full stations
(3) Station and elevation of the curve's highest and/or lowest
points
First, draw a sketch

A vertical curve is needed to connect an entry grade of ‐2.4% to
an exit grade of +1.5%. The PVI of the two grades is at station 33
+ 75 and elevation of 540 m above the datum level. The elevation at
station 34 + 40 must be 541 m above the datum level in order to
Accommodate a street, which crosses the road. Determine; (
According to TRH17)
i. The length of the curve. ii. The elevation and station...

A −2.50%−2.50% grade meets a +1.75%+1.75% grade at station 44+25
and elevation 3388.76 ftft, 400-ftft curve, stakeout at half
stations.
Part A: Determine the elevation at the low
point of the curve.
Part B: Determine the station at the low point
of the curve

A parabolic curve has a descending grade of -0.8% which meets an
ascending grade of 0.6% at station 10+020. The maximum allowable
change of grade per 20 m station is 0.20%. Elevation at station
10+020 is 240.60 m.
a) Compute the length of the curve;
b) Compute the horizontal distance of the lowest point from
station 10+020;
c) Compute for the vertical distance from PI to the curve;
d) Compute the elevation of the lowest point of the curve;
e)...

A vertical summit parabolic curve has vertical offset of 0.375
m. from the curve to the grade tangent at Station 10 + 050. The
curve has a slope of +4% and -2% grades intersecting at the P.I.
The offset distance of the curve at P.I. is equal to 1.5m. If the
stationing of the P.C. is at 10 + 000.
Compute the
(a) required length of curve (b) horizontal distance of the
vertical curve turning point from the point of...

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