ENV SP Equipment and Tools Knowledge 2

Question 1

Which tool is most commonly used to measure the thermal transmittance (U-value) of building envelope assemblies in the field?

Accepted Answer

Heat flux meter

Answer

A heat flux meter measures the rate of heat transfer through a surface, allowing calculation of U-values in actual building conditions.

Question 2

In the Envision framework, a life-cycle cost analysis (LCCA) tool is primarily used to evaluate which aspect of sustainable infrastructure?

Accepted Answer

Long-term economic performance across all ownership phases

Answer

LCCA tools assess costs over the entire ownership life of infrastructure, including initial, operating, maintenance, and disposal costs, supporting long-term economic sustainability.

Question 3

What type of equipment is a lux meter used for in sustainable building assessments?

Accepted Answer

Measuring illuminance levels to evaluate daylighting and lighting efficiency

Answer

A lux meter measures illuminance in lux or foot-candles, helping evaluators assess whether daylighting and artificial lighting meet efficiency and comfort standards.

Question 4

An acoustical sound level meter used during a sustainable infrastructure project assessment would primarily support which Envision credit category?

Accepted Answer

Wellbeing

Answer

Sound level meters support the Wellbeing category by helping quantify noise impacts on communities and workers, informing noise mitigation strategies.

Question 5

Which instrument is used to conduct a blower door test on a building, and what does it measure?

Accepted Answer

A calibrated fan system that measures air leakage rate through the building envelope

Answer

A blower door uses a calibrated fan to depressurize or pressurize a building, measuring air leakage rate in CFM50 or ACH50 to evaluate envelope tightness.

(ENV SP) Certified Envision Sustainability Professional Practice Test

(ENV SP) Certified Envision Sustainability Professional Practice Test

ENV SP Equipment and Tools Knowledge 2