3/22/25, 9:31 IICRC - Applied Structural Drying Flashcards |
AM
IICRC - APPLIED STRUCTURAL DRYING EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED
Practice questions for this set
Learn 1/7 Study using Learn
Category 1
Select the correct term
1Air vapor pressure 2Clean water supply line
Refrigerants dehumidification
3Delamination
4recommendation calculation
Don't know?
Terms in this set (130)
Commonly called an air scrubber or negative air machine if airborne particles need
Air Filtration Device (ADF)
to be reduced, you could use an appropriately installed _______ ________ ________
Air Filtration Device AFD
Prior to determining the best drying system for affected materials, restorers should
Assembly Construction
identify and understand the assembly construction (ie wall assembly, floor
assembly)
water originates from a sanitary source and does not pose substantial risk for
Category 1
dermal, ingestion, inhalation, or exposure. Uncontaminated and routinely cleaned
water contains significant contamination and has the potential to cause discomfort
Category 2
or sickness if contacted or consumed by humans
water is grossly contaminated and can contain pathogenic, toxigenic, or other
Category 3
harmful agents
Sewage Back Up Category 3
Clean water supply line Category 1
Least amount of water absorption and evaporation load - Wet porous materials -
Class 1
water loss is less then 5% of the area
Significant amount of water absorption and evaporation load - water intrusion where
Class 2
wet represents 5% - 40% of the area.
greatest amount of water absorption and evaporation load. Water intrusion where
Class 3
wet represents over 40% of the area
1/
7
, 3/22/25, 9:31 IICRC - Applied Structural Drying Flashcards |
AM
deeply held or bound water. Significant amount of water absorption into low
Class 4 evaporation materials. Drying may require special drying methods, longer drying
time, or substantial water vapor pressure differentials.
Uses mechanical dehumidification and is not open to outside air. Used if there are
Closed drying system security issues, the outside air is not conductive to drying or when access to
outside air is not possible.
Removes water vapor from the air by lowering the temperature of the incoming air
Conventual refrigerant dehumidifier 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.
uses some outdoor air with dehumidifiers to accelerate the drying process. This can
Combination Drying System include periodically venting (flushing) the structure, using negative pressure or using
small openings to the outside
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
Desiccant dehumidifier
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
Infiltration High humidity outside air could affect the drying climate adversely due to ______________
1. Tightness of the building envelope Favors that affect the detailed dehumidifier calculation is:
2.Prevailing weather
3.HVAC
4.Class of Water
5. Building Construction
5. Build out density
See Chart:
Cubic Feet : Divided by 70 = Base Pints per day
Detailed Dehumidification Calculation Multiply the 5 multipliers together: Build out density x building construction x class
of water x HVAC x Weather Impact = Multiplier
Multiply Base Pints per day x Multiplier = Adjusted Pints Per Day
The unaffected material readings are called__________. You know you can use this as
Dry Standards
your drying goal. Your drying goal is this plus 10% of it.
Drying Goal Calculation Dry standard + (Dry standard x 10%) = ____________________
1. Removing Materials to eliminate safety hazards
2.Removing materials that have suffered primary damage and are not restorable
3.Removing porous materials that are holding odor
5. Removing vapor barriers to assist with drying efforts
Why does demolition occur 6.Removing materials to reduce drying time
7. Removing materials to open cavities or areas to provide additional
needed services
Useful for adjuster, or notes on xactimate line items
2/
7
AM
IICRC - APPLIED STRUCTURAL DRYING EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED
Practice questions for this set
Learn 1/7 Study using Learn
Category 1
Select the correct term
1Air vapor pressure 2Clean water supply line
Refrigerants dehumidification
3Delamination
4recommendation calculation
Don't know?
Terms in this set (130)
Commonly called an air scrubber or negative air machine if airborne particles need
Air Filtration Device (ADF)
to be reduced, you could use an appropriately installed _______ ________ ________
Air Filtration Device AFD
Prior to determining the best drying system for affected materials, restorers should
Assembly Construction
identify and understand the assembly construction (ie wall assembly, floor
assembly)
water originates from a sanitary source and does not pose substantial risk for
Category 1
dermal, ingestion, inhalation, or exposure. Uncontaminated and routinely cleaned
water contains significant contamination and has the potential to cause discomfort
Category 2
or sickness if contacted or consumed by humans
water is grossly contaminated and can contain pathogenic, toxigenic, or other
Category 3
harmful agents
Sewage Back Up Category 3
Clean water supply line Category 1
Least amount of water absorption and evaporation load - Wet porous materials -
Class 1
water loss is less then 5% of the area
Significant amount of water absorption and evaporation load - water intrusion where
Class 2
wet represents 5% - 40% of the area.
greatest amount of water absorption and evaporation load. Water intrusion where
Class 3
wet represents over 40% of the area
1/
7
, 3/22/25, 9:31 IICRC - Applied Structural Drying Flashcards |
AM
deeply held or bound water. Significant amount of water absorption into low
Class 4 evaporation materials. Drying may require special drying methods, longer drying
time, or substantial water vapor pressure differentials.
Uses mechanical dehumidification and is not open to outside air. Used if there are
Closed drying system security issues, the outside air is not conductive to drying or when access to
outside air is not possible.
Removes water vapor from the air by lowering the temperature of the incoming air
Conventual refrigerant dehumidifier 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.
uses some outdoor air with dehumidifiers to accelerate the drying process. This can
Combination Drying System include periodically venting (flushing) the structure, using negative pressure or using
small openings to the outside
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
Desiccant dehumidifier
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
Infiltration High humidity outside air could affect the drying climate adversely due to ______________
1. Tightness of the building envelope Favors that affect the detailed dehumidifier calculation is:
2.Prevailing weather
3.HVAC
4.Class of Water
5. Building Construction
5. Build out density
See Chart:
Cubic Feet : Divided by 70 = Base Pints per day
Detailed Dehumidification Calculation Multiply the 5 multipliers together: Build out density x building construction x class
of water x HVAC x Weather Impact = Multiplier
Multiply Base Pints per day x Multiplier = Adjusted Pints Per Day
The unaffected material readings are called__________. You know you can use this as
Dry Standards
your drying goal. Your drying goal is this plus 10% of it.
Drying Goal Calculation Dry standard + (Dry standard x 10%) = ____________________
1. Removing Materials to eliminate safety hazards
2.Removing materials that have suffered primary damage and are not restorable
3.Removing porous materials that are holding odor
5. Removing vapor barriers to assist with drying efforts
Why does demolition occur 6.Removing materials to reduce drying time
7. Removing materials to open cavities or areas to provide additional
needed services
Useful for adjuster, or notes on xactimate line items
2/
7
