NEHA Housing and Built Environment 2

Question 1

Sub-slab depressurization (SSD) is the most common active mitigation technique for which indoor environmental hazard?

Accepted Answer

Radon gas

Answer

Sub-slab depressurization reduces indoor radon by creating negative pressure beneath the foundation slab, venting radon-laden soil gas to the outdoors before it enters the home.

Question 2

Which HUD standard defines a 'severely inadequate' housing unit based on plumbing, heating, electrical, and upkeep deficiencies?

Accepted Answer

American Housing Survey (AHS) Physical Inadequacy Scale

Answer

HUD's American Housing Survey uses the Physical Inadequacy Scale to classify units as 'severely inadequate' or 'moderately inadequate' based on plumbing, heating, electrical, and maintenance deficiencies.

Question 3

Carbon monoxide (CO) is dangerous in enclosed spaces primarily because it competes with oxygen for binding to which blood protein?

Accepted Answer

Hemoglobin

Answer

CO binds to hemoglobin with about 240 times greater affinity than oxygen, forming carboxyhemoglobin (COHb) and impairing oxygen transport to tissues.

Question 4

ASHRAE Standard 62.2 establishes minimum ventilation rates for which type of occupancy?

Accepted Answer

Low-rise residential buildings

Answer

ASHRAE Standard 62.2 specifically addresses ventilation and indoor air quality for low-rise residential buildings, including single-family and multifamily structures up to three stories.

Question 5

A dwelling that lacks complete kitchen facilities (sink, cooking equipment, refrigerator) is classified under HUD as which type of housing deficiency?

Accepted Answer

Moderately inadequate

Answer

Under HUD's American Housing Survey, a unit lacking complete kitchen facilities is classified as 'moderately inadequate' because it has one of four major facility deficiency categories.

NEHA - National Environmental Health Association Practice Test

NEHA - National Environmental Health Association Practice Test

NEHA Housing and Built Environment 2