IICRC APPLIED STRUCTURAL DRYING

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IICRC APPLIED STRUCTURAL DRYING

CORRECT SOLUTIONS.

Air Filtration Device (ADF) - correct answer- Commonly called an air scrubber or negative air machine if airborne particles need to be reduced, you could use an appropriately installed

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Air Filtration Device - correct answer- AFD

Assembly Construction - correct answer- Prior to determining the best drying system for affected materials, restorers should identify and understand the assembly construction (ie wall assembly, floor assembly)

Category 1 - correct answer- water originates from a sanitary source and does not pose substantial risk for dermal, ingestion, inhalation, or exposure. Uncontaminated and routinely cleaned

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Category 2 - correct answer- water contains significant contamination and has the potential to cause discomfort or sickness if contacted or consumed by humans

Category 3 - correct answer- water is grossly contaminated and can contain pathogenic, toxigenic, or other harmful agents

Sewage Back Up - correct answer- Category 3

Clean water supply line - correct answer- Category 1

Class 1 - correct answer- Least amount of water absorption and evaporation load - Wet porous materials - water loss is less then 5% of the area

Class 2 - correct answer- Significant amount of water absorption and evaporation load - water intrusion where wet represents 5% - 40% of the area.

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Class 3 - correct answer- greatest amount of water absorption and evaporation load. Water intrusion where wet represents over 40% of the area

Class 4 - correct answer- 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.

Closed drying system - correct answer- 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.

Conventual refrigerant dehumidifier - correct answer- 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.

Combination Drying System - correct answer- 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

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