BCE Bachelor of Civil Engineering 4

Question 1

Which load combination per ASCE 7 governs the design of most structural members for strength?

Accepted Answer

1.2D + 1.6L

Answer

The LRFD combination 1.2D + 1.6L typically controls the design of floor members because live load is the dominant variable.

Question 2

In geotechnical engineering, the angle of internal friction (φ) is highest for:

Accepted Answer

Dense gravel

Answer

Dense gravel has high interlocking and friction between particles, giving it the highest angle of internal friction among these options.

Question 3

What is the primary purpose of a weir in open channel flow measurement?

Accepted Answer

To measure discharge by correlating head over the weir

Answer

A weir creates a controlled overflow section where the water head above the crest is measured and related to discharge via empirical formulas.

Question 4

In transportation engineering, Level of Service (LOS) A on a roadway describes:

Accepted Answer

Free-flow conditions with little interaction between vehicles

Answer

LOS A represents free-flow conditions where drivers operate with complete freedom to select desired speeds with minimal interaction.

Question 5

Which failure mode of a steel column is characterized by twisting about its longitudinal axis?

Accepted Answer

Torsional buckling

Answer

Torsional buckling involves rotation of the cross-section about the longitudinal axis and governs for open sections with low torsional stiffness.

BCE - Bachelor of Civil Engineering Practice Test