IICRC - Applied Structural Drying Exam
(updated 2026) Questions & Answers | Latest
Already Graded A+ UPDATE 2026
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Practice questions for this set
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Loss Category 1
Choose an answer
Commonly called an air scrubber or negative air machine if airborne particles need
1
to be reduced, you could use an appropriately installed _______ ________ ________
The cold-water supply line to the kitchen sink broke at the valve, saturating many
2
areas of the house. What category loss is this?
Uses mechanical dehumidification and is not open to outside air. Used if there are
3 security issues, the outside air is not conductive to drying or when access to outside
air is not possible.
, water contains significant contamination and has the potential to cause discomfort
4
or sickness if contacted or consumed by humans
Don't know?
Terms in this set (130)
Commonly called an air scrubber Air Filtration Device (ADF)
or negative air machine if airborne
particles need to be reduced, you
could use an appropriately installed
_______ ________ ________
AFD Air Filtration Device
Prior to determining the best drying Assembly Construction
system for affected materials,
restorers should identify and
understand the assembly
construction (ie wall assembly, floor
assembly)
water originates from a sanitary Category 1
source and does not pose
substantial risk for dermal,
ingestion, inhalation, or exposure.
Uncontaminated and routinely
cleaned
water contains significant Category 2
contamination and has the potential
to cause discomfort or sickness if
contacted or consumed by humans
, water is grossly contaminated and Category 3
can contain pathogenic, toxigenic,
or other harmful agents
Category 3 Sewage Back Up
Category 1 Clean water supply line
Least amount of water absorption Class 1
and evaporation load - Wet porous
materials - water loss is less then 5%
of the area
Significant amount of water Class 2
absorption and evaporation load -
water intrusion where wet
represents 5% - 40% of the area.
greatest amount of water Class 3
absorption and evaporation load.
Water intrusion where wet
represents over 40% of the area
deeply held or bound water. Class 4
Significant amount of water
absorption into low evaporation
materials. Drying may require
special drying methods, longer
drying time, or substantial water
vapor pressure differentials.
(updated 2026) Questions & Answers | Latest
Already Graded A+ UPDATE 2026
Save
Practice questions for this set
Learn 1 /7 Study with Learn
Loss Category 1
Choose an answer
Commonly called an air scrubber or negative air machine if airborne particles need
1
to be reduced, you could use an appropriately installed _______ ________ ________
The cold-water supply line to the kitchen sink broke at the valve, saturating many
2
areas of the house. What category loss is this?
Uses mechanical dehumidification and is not open to outside air. Used if there are
3 security issues, the outside air is not conductive to drying or when access to outside
air is not possible.
, water contains significant contamination and has the potential to cause discomfort
4
or sickness if contacted or consumed by humans
Don't know?
Terms in this set (130)
Commonly called an air scrubber Air Filtration Device (ADF)
or negative air machine if airborne
particles need to be reduced, you
could use an appropriately installed
_______ ________ ________
AFD Air Filtration Device
Prior to determining the best drying Assembly Construction
system for affected materials,
restorers should identify and
understand the assembly
construction (ie wall assembly, floor
assembly)
water originates from a sanitary Category 1
source and does not pose
substantial risk for dermal,
ingestion, inhalation, or exposure.
Uncontaminated and routinely
cleaned
water contains significant Category 2
contamination and has the potential
to cause discomfort or sickness if
contacted or consumed by humans
, water is grossly contaminated and Category 3
can contain pathogenic, toxigenic,
or other harmful agents
Category 3 Sewage Back Up
Category 1 Clean water supply line
Least amount of water absorption Class 1
and evaporation load - Wet porous
materials - water loss is less then 5%
of the area
Significant amount of water Class 2
absorption and evaporation load -
water intrusion where wet
represents 5% - 40% of the area.
greatest amount of water Class 3
absorption and evaporation load.
Water intrusion where wet
represents over 40% of the area
deeply held or bound water. Class 4
Significant amount of water
absorption into low evaporation
materials. Drying may require
special drying methods, longer
drying time, or substantial water
vapor pressure differentials.
