1) Vertical curves are laid out by calculating: a) Latitudes and departures b) T

Question

1) Vertical curves are laid out by calculating:

a) Latitudes and departures

b) Tangent offsets

c) Coordinates

d) Proportions

e) (b) and (d)

f) (a) to (d)

2) Vertical curves do not have to:

a) Provide good fit to connecting grades

b) Provide for good storm drainage

c) Provide a good fit to ground profile

d) Provide adequate superelevation

e) Meet maximum specified grades

f) Meet points of fixed elevations

g) Provide sufficient sight distances

3) Vertical curves are designed with the stations counted:

a) Along vertical parabolic curves

b) Along a level X-axis

c) Along vertical curve tangents

4) Vertical parabolic curves have a constant radius of curvature:

a) Yes

b) Maybe

c) No

5) The high or low point of a vertical curve occurs where:

a) The second differential of the curve function is zero

b) The curve radius is zero

c) The road is parallel to the horizon in the direction of travel

d) The first differential of the curve function is zero

e) All of the above

f) None of the above

g) (c) and (d)

Explanation / Answer

1.e

Vertical curves are laid out by calculating tangent offsets

and proportions

2.d

3.c

4.c

5.g

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