Civil Engineering PE Prep 3

Question 1

A 10-ft diameter circular pipe flows half-full. The hydraulic radius is:

Accepted Answer

2.5 ft

Answer

5.0 ft

Answer

1.25 ft

Answer

3.54 ft

Question 2

Which AASHTO soil classification group generally represents the best subgrade material?

Accepted Answer

A-1-a

Answer

A-7-6

Answer

A-4

Answer

A-6

Question 3

The critical path in a CPM schedule is defined as the sequence of activities that:

Accepted Answer

Has zero total float and determines project duration

Answer

Has the most activities

Answer

Has the highest cost

Answer

Contains all milestones

Question 4

A steel column with an effective length KL = 15 ft and radius of gyration r = 2 in has a slenderness ratio of:

Accepted Answer

90

Answer

180

Answer

7.5

Answer

45

Question 5

In stormwater design, the Rational Method formula Q = CiA requires the rainfall intensity (i) to be evaluated at:

Accepted Answer

The time of concentration of the watershed

Answer

The 100-year storm duration

Answer

24-hour rainfall total

Answer

The 2-year storm frequency

Question 6

For a prestressed concrete beam, the term 'prestress losses' refers to:

Accepted Answer

Reduction in initial prestress force over time due to creep, shrinkage, and relaxation

Answer

Cracking of concrete at transfer

Answer

Loss of aggregate bond

Answer

Reduction in beam depth due to loading

Question 7

A horizontal curve on a highway has a radius of 1,500 ft and a design speed of 60 mph. The required superelevation is most closely governed by:

Accepted Answer

AASHTO Green Book design tables balancing e and f

Answer

Only the maximum friction factor

Answer

Only the posted speed limit

Answer

State drainage standards alone