CMR Moisture Control & Building Science 2

Question 1

Which instrument is used to measure relative humidity and temperature simultaneously in the field during a mold assessment?

Accepted Answer

Thermo-hygrometer (psychrometer)

Answer

Anemometer

Answer

Manometer

Answer

Particle counter

Question 2

In a 'stack effect' scenario common in multi-story buildings, how does moisture move?

Accepted Answer

Warm moist air rises and exits at the top while cold air infiltrates at the bottom

Answer

Moisture moves laterally through exterior walls only

Answer

Cold dry air enters at the top and pushes moisture to the basement

Answer

Moisture movement is driven solely by wind pressure

Question 3

What is the purpose of a negative air pressure containment during mold remediation from a moisture-control perspective?

Accepted Answer

To prevent mold spores from migrating to unaffected areas and to control indoor humidity

Answer

To dry out wet materials faster by moving air

Answer

To increase the temperature in the work area

Answer

To reduce the need for personal protective equipment

Question 4

Efflorescence on a basement wall most directly indicates:

Accepted Answer

Water has been moving through the masonry, depositing salts on the surface

Answer

Normal concrete curing byproducts with no moisture concern

Answer

High radon levels behind the wall

Answer

Incorrect paint application on the surface

Question 5

A hygroscopic building material is one that:

Accepted Answer

Absorbs and releases moisture in response to ambient humidity changes

Answer

Repels water and dries quickly after wetting

Answer

Is immune to mold growth due to its chemical composition

Answer

Only allows one-way moisture transmission

Question 6

Which of the following best describes 'interstitial condensation' in a building assembly?

Accepted Answer

Condensation that occurs within a wall, floor, or ceiling cavity when warm moist air meets a cold surface

Answer

Condensation that forms on the interior side of windows

Answer

Surface moisture from cleaning products left on walls

Answer

Rain condensation on exterior cladding

Question 7

After completing mold remediation, what moisture condition must be achieved in building materials before encapsulation or reconstruction begins?

Accepted Answer

Materials must be dried to acceptable baseline moisture content levels as specified by IICRC S520 standards

Answer

Materials must reach ambient outdoor humidity levels

Answer

Materials must be completely dry with 0% moisture content

Answer

Materials must test negative for mold spores only, regardless of moisture level