Civil Engineering PE Surveying and Geomatics 3

Question 1

Two cross-sections 100 ft apart have areas of 120 sq ft and 180 sq ft. Using the average end area method, what is the earthwork volume in cubic yards?

Accepted Answer

555.6 cy

Answer

1,111 cy

Answer

16,667 cy

Answer

5,000 cy

Question 2

A photogrammetric map has a scale of 1:20,000. A distance measured on the map is 3.5 cm. What is the actual ground distance?

Accepted Answer

700 m

Answer

70 m

Answer

7,000 m

Answer

350 m

Question 3

If D = A + B where A = 100.00 ± 0.02 ft and B = 200.00 ± 0.03 ft (independent measurements), what is the propagated error in D?

Accepted Answer

± 0.036 ft

Answer

± 0.050 ft

Answer

± 0.025 ft

Answer

± 0.001 ft

Question 4

What is the primary purpose of a control survey in an engineering project?

Accepted Answer

To establish a reference framework of accurate points for all subsequent surveys

Answer

To measure groundwater depth at the site

Answer

To determine traffic signal timing along a roadway corridor

Answer

To assess the bearing capacity of the subsurface soil

Question 5

A traverse line runs from Point A (N 100.0, E 200.0) to Point B (N 240.0, E 350.0). What is the bearing of line AB?

Accepted Answer

N 47°00' E

Answer

N 43°36' E

Answer

S 47°00' E

Answer

N 47°00' W

Question 6

The prismoidal formula for earthwork volumes gives more accurate results than the average end area method primarily when:

Accepted Answer

The middle cross-section area differs significantly from the average of the two end areas

Answer

Cross-sections are uniform and prismatic throughout the interval

Answer

The terrain is perfectly flat and featureless

Answer

Stations are spaced at 25 ft intervals or less

Question 7

A total station reads 42°18'30" to Point B and 89°42'15" to Point C from Point A. What is the horizontal angle from B to C measured at Point A?

Accepted Answer

47°23'45"

Answer

42°18'30"

Answer

131°23'45"

Answer

47°24'15"