WRT CERTIFICATION EXAM II EXAM REVIEW
QUESTIONS AND CORRECT ANSWERS
◉ When calculating air movers start by installing __ unit(s) per
room.
Answer: 1
◉ Add 1 air mover per __ square feet of affected floor.
Answer: 50-70
◉ What is used to measure the temperature and humidity of air?
Answer: thermo hygrometer
◉ Reducing the humidity of the air is called dehumidification.
Answer: T
◉ The term that describes the ratio of the mass of water vapor in air
to the mass of dry air is called
Answer: humidity ratio
◉ If you raise or lower the air temp, but do not change the humidity
or GPP in the air, what else will change?
,Answer: relative humidity (RH)
◉ Drying a wet wall cavity by injecting air into it speeds
Answer: evaporation
◉ What is the term to describe when air reaches 100% relative
humidity, also known as saturation?
Answer: dew point
◉ If the vapor pressure in the air is lower than the vapor pressure of
the water in the material, which can occur?
Answer: evaporation
◉ Which of these two dehu types produce the lowest vapor pressure
air: desiccant or LGR?
Answer: desiccant
◉ When you are considering conditions for open drying, you should
consider both temp and humidity of outside air
Answer: T
◉ The amount of water vapor in the air, compared to what it would
be if saturated, expressed as a percentage, is?
,Answer: Relative humidity (RH)
◉ Other than extraction, what has the most effect on drying time?
Answer: rate of evaporation
◉ Before you can use a respirator, what are 3 of the requirements
the employer has to provide?
Answer: - medical evaluation
- fit testing
- proper training
◉ Name two hazardous materials that are more likely to be found in
older buildings
Answer: - lead
- asbestos
◉ What is an IEP?
Answer: indoor environmental professional
◉ When should a restorer consider bringing in an IEP on a Cat 2 or 3
water intrusion?
Answer: where there are high risk individuals or situations
, ◉ What Cat of water contains significant contamination and can
make you sick?
Answer: Cat 2
◉ Significant amount of water absorption into materials w/potential
for much slower evaporation.
Answer: Class 4
◉ Products designed to kill or inactivate a broad spectrum of
microorganisms, but not all their spores, are called:
Answer: disinfectant
◉ Prior to applying an antimicrobial (biocide) chemical in an area,
advise occupants to leave the area
Answer: T
◉ When a customer directs you to clean sewage damaged carpet,
violating the S500 standard of care, what can you do?
Answer: stop work until the conflict is resolved
◉ Increasing wet material temperature decreases the vapor
pressure of the water in that material.
QUESTIONS AND CORRECT ANSWERS
◉ When calculating air movers start by installing __ unit(s) per
room.
Answer: 1
◉ Add 1 air mover per __ square feet of affected floor.
Answer: 50-70
◉ What is used to measure the temperature and humidity of air?
Answer: thermo hygrometer
◉ Reducing the humidity of the air is called dehumidification.
Answer: T
◉ The term that describes the ratio of the mass of water vapor in air
to the mass of dry air is called
Answer: humidity ratio
◉ If you raise or lower the air temp, but do not change the humidity
or GPP in the air, what else will change?
,Answer: relative humidity (RH)
◉ Drying a wet wall cavity by injecting air into it speeds
Answer: evaporation
◉ What is the term to describe when air reaches 100% relative
humidity, also known as saturation?
Answer: dew point
◉ If the vapor pressure in the air is lower than the vapor pressure of
the water in the material, which can occur?
Answer: evaporation
◉ Which of these two dehu types produce the lowest vapor pressure
air: desiccant or LGR?
Answer: desiccant
◉ When you are considering conditions for open drying, you should
consider both temp and humidity of outside air
Answer: T
◉ The amount of water vapor in the air, compared to what it would
be if saturated, expressed as a percentage, is?
,Answer: Relative humidity (RH)
◉ Other than extraction, what has the most effect on drying time?
Answer: rate of evaporation
◉ Before you can use a respirator, what are 3 of the requirements
the employer has to provide?
Answer: - medical evaluation
- fit testing
- proper training
◉ Name two hazardous materials that are more likely to be found in
older buildings
Answer: - lead
- asbestos
◉ What is an IEP?
Answer: indoor environmental professional
◉ When should a restorer consider bringing in an IEP on a Cat 2 or 3
water intrusion?
Answer: where there are high risk individuals or situations
, ◉ What Cat of water contains significant contamination and can
make you sick?
Answer: Cat 2
◉ Significant amount of water absorption into materials w/potential
for much slower evaporation.
Answer: Class 4
◉ Products designed to kill or inactivate a broad spectrum of
microorganisms, but not all their spores, are called:
Answer: disinfectant
◉ Prior to applying an antimicrobial (biocide) chemical in an area,
advise occupants to leave the area
Answer: T
◉ When a customer directs you to clean sewage damaged carpet,
violating the S500 standard of care, what can you do?
Answer: stop work until the conflict is resolved
◉ Increasing wet material temperature decreases the vapor
pressure of the water in that material.
