FS Route and Transportation Surveys

Question 1

Using the arc definition, what is the degree of curve for a simple circular curve with a radius of 573 feet?

Accepted Answer

10°

Answer

5°

Answer

15°

Answer

20°

Question 2

The tangent length (T) of a simple horizontal curve with radius R and intersection angle Δ is calculated as:

Accepted Answer

T = R × tan(Δ/2)

Answer

T = R × sin(Δ/2)

Answer

T = R × cos(Δ/2)

Answer

T = R × (sec(Δ/2) − 1)

Question 3

In route surveying, what does the abbreviation 'PI' stand for?

Accepted Answer

Point of Intersection

Answer

Parabolic Inflection

Answer

Primary Index

Answer

Point of Inflection

Question 4

A compound curve in route surveying consists of:

Accepted Answer

Two or more circular arcs with different radii curving in the same direction

Answer

Two circular arcs curving in opposite directions

Answer

A spiral followed by a straight tangent section

Answer

A reverse curve followed by a circular arc

Question 5

The external distance (E) of a simple horizontal curve is the distance from:

Accepted Answer

The PI to the midpoint of the curve

Answer

The PC to the midpoint of the arc

Answer

The PI to the PT along the back tangent

Answer

The midpoint of the long chord to the PC

Question 6

The arc length (L) of a simple horizontal curve with radius R and central angle Δ expressed in radians is:

Accepted Answer

L = R × Δ

Answer

L = R + Δ

Answer

L = 2R sin(Δ/2)

Answer

L = R / Δ

Question 7

In the chord definition of degree of curve, D is the central angle subtended by a chord of what length?

Accepted Answer

100 feet

Answer

50 feet

Answer

200 feet

Answer

500 feet