ICC Energy and Sustainability Professionals 4

Question 1

A commercial building's Lighting Power Density (LPD) is expressed in which units?

Accepted Answer

Watts per square foot (W/ft²)

Answer

Lumens per square foot (lm/ft²)

Answer

Kilowatt-hours per square foot (kWh/ft²)

Answer

Candelas per square meter (cd/m²)

Question 2

What is the function of a demand-controlled ventilation (DCV) system in a commercial building?

Accepted Answer

Reduce outdoor air intake during periods of low occupancy based on CO2 sensing

Answer

Increase supply air volume during peak cooling loads

Answer

Control exhaust fan speed based on building pressurization

Answer

Modulate supply air temperature based on outdoor air conditions

Question 3

Under IECC 2021 commercial requirements, which of the following systems requires an economizer unless a specific exception applies?

Accepted Answer

HVAC units serving spaces greater than 54,000 Btu/h cooling capacity in most climate zones

Answer

All split-system air conditioners regardless of capacity

Answer

Packaged rooftop units with electric heat only

Answer

Fan coil units connected to a central chilled water plant

Question 4

Which rating system is maintained by the U.S. Green Building Council and is commonly used alongside ICC codes for sustainable building certification?

Accepted Answer

LEED (Leadership in Energy and Environmental Design)

Answer

BREEAM (Building Research Establishment Environmental Assessment Method)

Answer

WELL Building Standard

Answer

Living Building Challenge

Question 5

In the context of IECC residential blower door testing, what is the maximum allowable air changes per hour at 50 Pascals (ACH50) for Climate Zone 3?

Accepted Answer

3 ACH50

Answer

5 ACH50

Answer

7 ACH50

Answer

10 ACH50

Question 6

A building energy auditor is classifying an audit according to ASHRAE Standard 211. A Level II audit differs from a Level I audit primarily because it includes:

Accepted Answer

Energy savings calculations with supporting engineering analysis for all identified measures

Answer

A brief review of utility bills and a walkthrough survey only

Answer

Detailed investment-grade analysis with construction documents

Answer

A continuous monitoring study using calibrated sub-meters

Question 7

What is the purpose of the 'Cool Roof' requirement found in IECC commercial provisions for low-slope roofs in hot climates?

Accepted Answer

To reduce cooling loads by reflecting solar radiation away from the building

Answer

To increase insulation R-value by adding a reflective vapor barrier

Answer

To prevent ice dam formation during winter months

Answer

To comply with stormwater management requirements