IICRC WRT Exam Reets Academy (Scott Mims,
7/14-16/25) Questions & Correct Verified
Answers .
Assessing a jobsite for hazards during an inspection is - CORRECT ANSWERS✅✅a
top priority
When calculating air movers start by installing __ unit(s) per room. - CORRECT
ANSWERS✅✅1
Add 1 air mover per __ square feet of affected floor. - CORRECT ANSWERS✅✅50-
70
What is used to measure the temperature and humidity of air? - CORRECT
ANSWERS✅✅thermo hygrometer
Reducing the humidity of the air is called dehumidification. - CORRECT
ANSWERS✅✅T
The term that describes the ratio of the mass of water vapor in air to the mass of dry air
is called - CORRECT ANSWERS✅✅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? - CORRECT ANSWERS✅✅relative humidity (RH)
Drying a wet wall cavity by injecting air into it speeds - CORRECT
ANSWERS✅✅evaporation
What is the term to describe when air reaches 100% relative humidity, also known as
saturation? - CORRECT ANSWERS✅✅dew point
If the vapor pressure in the air is lower than the vapor pressure of the water in the
material, which can occur? - CORRECT ANSWERS✅✅evaporation
Which of these two dehu types produce the lowest vapor pressure air: desiccant or
LGR? - CORRECT ANSWERS✅✅desiccant
When you are considering conditions for open drying, you should consider both temp
and humidity of outside air - CORRECT ANSWERS✅✅T
,The amount of water vapor in the air, compared to what it would be if saturated,
expressed as a percentage, is? - CORRECT ANSWERS✅✅Relative humidity (RH)
Other than extraction, what has the most effect on drying time? - CORRECT
ANSWERS✅✅rate of evaporation
Before you can use a respirator, what are 3 of the requirements the employer has to
provide? - CORRECT ANSWERS✅✅- medical evaluation
- fit testing
- proper training
Name two hazardous materials that are more likely to be found in older buildings -
CORRECT ANSWERS✅✅- lead
- asbestos
What is an IEP? - CORRECT ANSWERS✅✅indoor environmental professional
When should a restorer consider bringing in an IEP on a Cat 2 or 3 water intrusion? -
CORRECT ANSWERS✅✅where there are high risk individuals or situations
What Cat of water contains significant contamination and can make you sick? -
CORRECT ANSWERS✅✅Cat 2
Significant amount of water absorption into materials w/potential for much slower
evaporation. - CORRECT ANSWERS✅✅Class 4
Products designed to kill or inactivate a broad spectrum of microorganisms, but not all
their spores, are called: - CORRECT ANSWERS✅✅disinfectant
Prior to applying an antimicrobial (biocide) chemical in an area, advise occupants to
leave the area - CORRECT ANSWERS✅✅T
When a customer directs you to clean sewage damaged carpet, violating the S500
standard of care, what can you do? - CORRECT ANSWERS✅✅stop work until the
conflict is resolved
Increasing wet material temperature decreases the vapor pressure of the water in that
material. - CORRECT ANSWERS✅✅F
If dew point temperature changes, what are other humidity metrics that change? -
CORRECT ANSWERS✅✅- vapor pressure
- humidity ratio
, Your project drying documentation should include two things: psychrometric conditions
and material moisture content. - CORRECT ANSWERS✅✅T
What type of materials are most likely to be damaged by high humidity? - CORRECT
ANSWERS✅✅hygroscopic
Carpet can be easily damaged while wet. If it delaminates the most likely solution is: -
CORRECT ANSWERS✅✅recommend removal & replacement
If the project you're on has 47% of the materials wet, compares to the total of materials,
what class would it be? - CORRECT ANSWERS✅✅Class 3
Wet, porous materials that represent less than 5% of the combined wall, floor, and
ceiling surface, would be what? - CORRECT ANSWERS✅✅Class 1
Water vapor migrating out of drywall, through a flat painted surface, and into the air, is
based on - CORRECT ANSWERS✅✅permeance
When RH exceeds 70%, conditions are ideal for what type of damage? - CORRECT
ANSWERS✅✅secondary damage
When can a drying project be considered complete? - CORRECT
ANSWERS✅✅when your drying goals of the materials are met
What are 2 tools used to disengage carpet? - CORRECT ANSWERS✅✅- knee
kicker
- awl
The primary reason for the skin on padding is - CORRECT ANSWERS✅✅for ease of
slide during installation
Vapor pressure, like all other pressures, seeks: - CORRECT
ANSWERS✅✅equilibrium
Applying heat to water makes its VP - CORRECT ANSWERS✅✅increase
If the GPP outside is higher than inside, the only drying system that you can consider is
- CORRECT ANSWERS✅✅closed drying
When a wet surface is warmer than the dew point, what can happen? - CORRECT
ANSWERS✅✅evaporation
When drywall is saturated it gets very soft and it won't regain its strength when dry. -
CORRECT ANSWERS✅✅F
7/14-16/25) Questions & Correct Verified
Answers .
Assessing a jobsite for hazards during an inspection is - CORRECT ANSWERS✅✅a
top priority
When calculating air movers start by installing __ unit(s) per room. - CORRECT
ANSWERS✅✅1
Add 1 air mover per __ square feet of affected floor. - CORRECT ANSWERS✅✅50-
70
What is used to measure the temperature and humidity of air? - CORRECT
ANSWERS✅✅thermo hygrometer
Reducing the humidity of the air is called dehumidification. - CORRECT
ANSWERS✅✅T
The term that describes the ratio of the mass of water vapor in air to the mass of dry air
is called - CORRECT ANSWERS✅✅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? - CORRECT ANSWERS✅✅relative humidity (RH)
Drying a wet wall cavity by injecting air into it speeds - CORRECT
ANSWERS✅✅evaporation
What is the term to describe when air reaches 100% relative humidity, also known as
saturation? - CORRECT ANSWERS✅✅dew point
If the vapor pressure in the air is lower than the vapor pressure of the water in the
material, which can occur? - CORRECT ANSWERS✅✅evaporation
Which of these two dehu types produce the lowest vapor pressure air: desiccant or
LGR? - CORRECT ANSWERS✅✅desiccant
When you are considering conditions for open drying, you should consider both temp
and humidity of outside air - CORRECT ANSWERS✅✅T
,The amount of water vapor in the air, compared to what it would be if saturated,
expressed as a percentage, is? - CORRECT ANSWERS✅✅Relative humidity (RH)
Other than extraction, what has the most effect on drying time? - CORRECT
ANSWERS✅✅rate of evaporation
Before you can use a respirator, what are 3 of the requirements the employer has to
provide? - CORRECT ANSWERS✅✅- medical evaluation
- fit testing
- proper training
Name two hazardous materials that are more likely to be found in older buildings -
CORRECT ANSWERS✅✅- lead
- asbestos
What is an IEP? - CORRECT ANSWERS✅✅indoor environmental professional
When should a restorer consider bringing in an IEP on a Cat 2 or 3 water intrusion? -
CORRECT ANSWERS✅✅where there are high risk individuals or situations
What Cat of water contains significant contamination and can make you sick? -
CORRECT ANSWERS✅✅Cat 2
Significant amount of water absorption into materials w/potential for much slower
evaporation. - CORRECT ANSWERS✅✅Class 4
Products designed to kill or inactivate a broad spectrum of microorganisms, but not all
their spores, are called: - CORRECT ANSWERS✅✅disinfectant
Prior to applying an antimicrobial (biocide) chemical in an area, advise occupants to
leave the area - CORRECT ANSWERS✅✅T
When a customer directs you to clean sewage damaged carpet, violating the S500
standard of care, what can you do? - CORRECT ANSWERS✅✅stop work until the
conflict is resolved
Increasing wet material temperature decreases the vapor pressure of the water in that
material. - CORRECT ANSWERS✅✅F
If dew point temperature changes, what are other humidity metrics that change? -
CORRECT ANSWERS✅✅- vapor pressure
- humidity ratio
, Your project drying documentation should include two things: psychrometric conditions
and material moisture content. - CORRECT ANSWERS✅✅T
What type of materials are most likely to be damaged by high humidity? - CORRECT
ANSWERS✅✅hygroscopic
Carpet can be easily damaged while wet. If it delaminates the most likely solution is: -
CORRECT ANSWERS✅✅recommend removal & replacement
If the project you're on has 47% of the materials wet, compares to the total of materials,
what class would it be? - CORRECT ANSWERS✅✅Class 3
Wet, porous materials that represent less than 5% of the combined wall, floor, and
ceiling surface, would be what? - CORRECT ANSWERS✅✅Class 1
Water vapor migrating out of drywall, through a flat painted surface, and into the air, is
based on - CORRECT ANSWERS✅✅permeance
When RH exceeds 70%, conditions are ideal for what type of damage? - CORRECT
ANSWERS✅✅secondary damage
When can a drying project be considered complete? - CORRECT
ANSWERS✅✅when your drying goals of the materials are met
What are 2 tools used to disengage carpet? - CORRECT ANSWERS✅✅- knee
kicker
- awl
The primary reason for the skin on padding is - CORRECT ANSWERS✅✅for ease of
slide during installation
Vapor pressure, like all other pressures, seeks: - CORRECT
ANSWERS✅✅equilibrium
Applying heat to water makes its VP - CORRECT ANSWERS✅✅increase
If the GPP outside is higher than inside, the only drying system that you can consider is
- CORRECT ANSWERS✅✅closed drying
When a wet surface is warmer than the dew point, what can happen? - CORRECT
ANSWERS✅✅evaporation
When drywall is saturated it gets very soft and it won't regain its strength when dry. -
CORRECT ANSWERS✅✅F
