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

Using the arc definition, D = 5729.578 / R = 5729.578 / 573 ≈ 10°.

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

The tangent length is T = R × tan(Δ/2), derived from the right triangle formed by the radius, tangent, and line to the PI.

Question 3

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

Accepted Answer

Point of Intersection

Answer

PI stands for Point of Intersection, which is where the two tangents of a horizontal curve meet.

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

A compound curve uses two or more circular arcs of different radii that both curve in the same direction, sharing a common tangent at the point of compound curvature (PCC).

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 external distance E is measured from the PI to the midpoint of the curve (the point on the arc closest to the PI), calculated as E = R(sec(Δ/2) − 1).

FS - Fundamentals of Surveying Exam Practice Test

FS - Fundamentals of Surveying Exam Practice Test

FS Route and Transportation Surveys