Building Engineering Building Engineering MCQ 5

Question 1

What is the purpose of 'weep holes' in masonry cavity walls?

Accepted Answer

To drain water that infiltrates the cavity back to the exterior

Answer

Weep holes at the base of cavity walls allow any water that enters the cavity to drain out, preventing moisture accumulation and damage.

Question 2

In electrical systems, what does 'voltage drop' refer to and why is it significant in building design?

Accepted Answer

The reduction in voltage along a conductor due to resistance, affecting equipment performance

Answer

Voltage drop along conductors reduces available voltage at equipment, causing motors, lights, and electronics to underperform or fail; NEC limits it to 3% for feeders.

Question 3

What is the 'wet-bulb temperature' used for in building mechanical systems?

Accepted Answer

Determining the moisture content of air for cooling coil and cooling tower sizing

Answer

Wet-bulb temperature accounts for evaporative cooling and directly indicates air's moisture content, critical for sizing cooling equipment and evaluating heat stress.

Question 4

Which building code provision governs egress stair width requirements in the US?

Accepted Answer

IBC Chapter 10

Answer

IBC Chapter 10 covers means of egress, including minimum stair widths based on occupant load and occupancy classification.

Question 5

What is a 'curtain wall' system in high-rise construction?

Accepted Answer

A non-structural exterior cladding system that transfers its own weight to the building frame

Answer

Curtain walls are lightweight, non-load-bearing exterior facade systems attached to the structural frame, carrying only their own weight and transferring wind loads to the structure.

Building Engineering Practice Test

Building Engineering Practice Test

Building Engineering Building Engineering MCQ 5