IICRC - Applied Structural Drying
Exam Questions & Answers (Grade
A+)
Commonly called an air scrubber or negative air machine if
airborne particles need to be reduced, you could use an
appropriately installed _______ ________ ________ -
correct answer ✅Air Filtration Device (ADF)
AFD -
correct answer ✅Air Filtration Device
Prior to determining the best drying system for affected materials,
restorers should identify and understand the assembly construction
(ie wall assembly, floor assembly) -
correct answer ✅Assembly Construction
water originates from a sanitary source and does not pose
substantial risk for dermal, ingestion, inhalation, or exposure.
Uncontaminated and routinely cleaned -
correct answer ✅Category 1
water contains significant contamination and has the potential to
cause discomfort or sickness if contacted or consumed by humans -
correct answer ✅Category 2
,IICRC - Applied Structural Drying
Exam Questions & Answers (Grade
A+)
water is grossly contaminated and can contain pathogenic,
toxigenic, or other harmful agents -
correct answer ✅Category 3
Category 3 -
correct answer ✅Sewage Back Up
Category 1 -
correct answer ✅Clean water supply line
Least amount of water absorption and evaporation load - Wet
porous materials - water loss is less then 5% of the area -
correct answer ✅Class 1
Significant amount of water absorption and evaporation load -
water intrusion where wet represents 5% - 40% of the area. -
correct answer ✅Class 2
,IICRC - Applied Structural Drying
Exam Questions & Answers (Grade
A+)
greatest amount of water absorption and evaporation load. Water
intrusion where wet represents over 40% of the area -
correct answer ✅Class 3
deeply held or bound water. Significant amount of water absorption
into low evaporation materials. Drying may require special drying
methods, longer drying time, or substantial water vapor pressure
differentials. -
correct answer ✅Class 4
Uses mechanical dehumidification and is not open to outside air.
Used if there are security issues, the outside air is not conductive to
drying or when access to outside air is not possible. -
correct answer ✅Closed drying system
Removes water vapor from the air by lowering the temperature of
the incoming air to below dew point and causing the water to
condense on the coils. Cold and hot surfaces created with gases
inside a closed coil system. -
correct answer ✅Conventual refrigerant dehumidifier
, IICRC - Applied Structural Drying
Exam Questions & Answers (Grade
A+)
uses some outdoor air with dehumidifiers to accelerate the drying
process. This can include periodically venting (flushing) the
structure, using negative pressure or using small openings to the
outside -
correct answer ✅Combination Drying System
Removes water vapor from the air through absorption. Usually
requires more amperage as compared to refrigerant dehumidifier.
Desiccants create the lowest vapor pressure which work best on
low porosity materials. When a desiccant dehu is drawing outside
air and ducting processed air inside a building it can create positive
pressure in the building. To improve desiccant dehu performance, it
may be beneficial to pre-cool the desiccants air intake -
correct answer ✅Desiccant dehumidifier
High humidity outside air could affect the drying climate adversely
due to ______________ -
correct answer ✅Infiltration
Favors that affect the detailed dehumidifier calculation is: -
correct answer ✅1. Tightness of the building envelope
2. Prevailing weather
Exam Questions & Answers (Grade
A+)
Commonly called an air scrubber or negative air machine if
airborne particles need to be reduced, you could use an
appropriately installed _______ ________ ________ -
correct answer ✅Air Filtration Device (ADF)
AFD -
correct answer ✅Air Filtration Device
Prior to determining the best drying system for affected materials,
restorers should identify and understand the assembly construction
(ie wall assembly, floor assembly) -
correct answer ✅Assembly Construction
water originates from a sanitary source and does not pose
substantial risk for dermal, ingestion, inhalation, or exposure.
Uncontaminated and routinely cleaned -
correct answer ✅Category 1
water contains significant contamination and has the potential to
cause discomfort or sickness if contacted or consumed by humans -
correct answer ✅Category 2
,IICRC - Applied Structural Drying
Exam Questions & Answers (Grade
A+)
water is grossly contaminated and can contain pathogenic,
toxigenic, or other harmful agents -
correct answer ✅Category 3
Category 3 -
correct answer ✅Sewage Back Up
Category 1 -
correct answer ✅Clean water supply line
Least amount of water absorption and evaporation load - Wet
porous materials - water loss is less then 5% of the area -
correct answer ✅Class 1
Significant amount of water absorption and evaporation load -
water intrusion where wet represents 5% - 40% of the area. -
correct answer ✅Class 2
,IICRC - Applied Structural Drying
Exam Questions & Answers (Grade
A+)
greatest amount of water absorption and evaporation load. Water
intrusion where wet represents over 40% of the area -
correct answer ✅Class 3
deeply held or bound water. Significant amount of water absorption
into low evaporation materials. Drying may require special drying
methods, longer drying time, or substantial water vapor pressure
differentials. -
correct answer ✅Class 4
Uses mechanical dehumidification and is not open to outside air.
Used if there are security issues, the outside air is not conductive to
drying or when access to outside air is not possible. -
correct answer ✅Closed drying system
Removes water vapor from the air by lowering the temperature of
the incoming air to below dew point and causing the water to
condense on the coils. Cold and hot surfaces created with gases
inside a closed coil system. -
correct answer ✅Conventual refrigerant dehumidifier
, IICRC - Applied Structural Drying
Exam Questions & Answers (Grade
A+)
uses some outdoor air with dehumidifiers to accelerate the drying
process. This can include periodically venting (flushing) the
structure, using negative pressure or using small openings to the
outside -
correct answer ✅Combination Drying System
Removes water vapor from the air through absorption. Usually
requires more amperage as compared to refrigerant dehumidifier.
Desiccants create the lowest vapor pressure which work best on
low porosity materials. When a desiccant dehu is drawing outside
air and ducting processed air inside a building it can create positive
pressure in the building. To improve desiccant dehu performance, it
may be beneficial to pre-cool the desiccants air intake -
correct answer ✅Desiccant dehumidifier
High humidity outside air could affect the drying climate adversely
due to ______________ -
correct answer ✅Infiltration
Favors that affect the detailed dehumidifier calculation is: -
correct answer ✅1. Tightness of the building envelope
2. Prevailing weather
