IICRC S500 Water Mitigation || Already Graded A+.
The homeowner correct answers is responsible to take the necessary steps to preserve and protect
their property from further damage
Four principles of water damage restoration: correct answers Provide for health and safety of
workers and occupants; Document everything; Mitigate, and Dry
Four principles of drying correct answers Extract, Evaporate, dehumidify, control temp
Extraction correct answers is removing excess water and is the first step in mitigation
Evaporation correct answers is achieved by using energy (heat) to transform water trapped in
porous materials into a vapor, thereby releasing the moisture from the materials.
Dehumidification correct answers the process of removing water vapor from the air.
Rate of Dehumidification correct answers must be at least equal to the rate of evaporation.
True or False correct answers Elevated vapor pressure in a room Can cause secondary damage to
hygroscopic materials
True or False correct answers The control of temperature is important to enhance both
evaporation and dehumidification for effective drying
True or False correct answers When temperature increases evaporation of absorbed water
increases and water vapor suspended in air also increases.
Classification of Water Intrusion correct answers described as Class 1, 2, 3, or 4. Must be
determined to calculate the amount of dehumidification required in drying process, based on the
amount of wet surface area, permeance/porosity of materials in drying area.
Class 1 correct answers is the least amount of water absorption and evaporation load, affecting
less 5% of porous materials with minimal absorption into low evaporation materials.
Class 2 correct answers has a significant amount of water absorption and evaporation load,
affection 5-40% porous materials, with minimal absorption into low evaporated materials
Class 3 correct answers has the greatest amount of water absorption and evaporation load,
affecting more than 40% porous materials and minimal absorption into low evaporated materials
Class 4 correct answers has deeply held or bound water, and significant absorption into low
evaporation materials.
Determine the Class of water for a 20' x 20' x 8 ' room, with an entirely wet floor.. correct
answers Affected area/Total SF = % affected
, 400/1440 = .27777 x 100 = 28%
28% = Class 2
Determine the Class of Water for a 20' x 20' x 8' room, with only half the floor affected and
arriving within 24 hours of loss. correct answers Affected area/total sf = % affected
200/1440 = .13888 x 100 = 14%
14% = Class 2
Determine Class of water for a 20' x 20' x 8' room, with entirely wet plywood subfloor arriving
48 hours after loss correct answers affected area/total sf = % affected
Class 4 due to deeply bound water sitting for long time
Categories of Water correct answers there are four categories - determined by range of
contamination of the source and quality of water
Category 1 water correct answers Water originating from sanitary water source, with no
deterioration, does not pose risk to skin or if ingested
Category 2 Water correct answers Water containing significant contamination from materials,
unsafe levels of microorganisms, causes discomfort or sickness.
Category 3 Water correct answers Water grossly contaminated with pathogens, toxins, bacteria,
causes sickness
Regulated or Hazardous Material and Mold correct answers the last category of water, without
number designation, requiring a specialized environmental expert (EIP) to assist where
government regulations apply.
The ANSI/IICRC S500 correct answers Is the standard of care for the water damage restoration
industry, providing foundation for basic principles of proper restoration practices.
When the ANSI/IICRC S500 uses the word "Shall" it means correct answers it is something
mandatory due to laws/regulations
When the ANSI/IICRC S500 uses the word "Should" it means correct answers it is something
that is mandatory but not due to laws
When the ANSI/IICRC S500 uses the word "Recommended" it means correct answers it is
something that is advised or suggested to do
Psychrometry correct answers the study of the relationship between air, humidity, temperature
and their effects on various materials
True or False correct answers A hygroscopic material will continue to absorb water or water
vapor until it reaches equilibrium with the surrounding environment
The homeowner correct answers is responsible to take the necessary steps to preserve and protect
their property from further damage
Four principles of water damage restoration: correct answers Provide for health and safety of
workers and occupants; Document everything; Mitigate, and Dry
Four principles of drying correct answers Extract, Evaporate, dehumidify, control temp
Extraction correct answers is removing excess water and is the first step in mitigation
Evaporation correct answers is achieved by using energy (heat) to transform water trapped in
porous materials into a vapor, thereby releasing the moisture from the materials.
Dehumidification correct answers the process of removing water vapor from the air.
Rate of Dehumidification correct answers must be at least equal to the rate of evaporation.
True or False correct answers Elevated vapor pressure in a room Can cause secondary damage to
hygroscopic materials
True or False correct answers The control of temperature is important to enhance both
evaporation and dehumidification for effective drying
True or False correct answers When temperature increases evaporation of absorbed water
increases and water vapor suspended in air also increases.
Classification of Water Intrusion correct answers described as Class 1, 2, 3, or 4. Must be
determined to calculate the amount of dehumidification required in drying process, based on the
amount of wet surface area, permeance/porosity of materials in drying area.
Class 1 correct answers is the least amount of water absorption and evaporation load, affecting
less 5% of porous materials with minimal absorption into low evaporation materials.
Class 2 correct answers has a significant amount of water absorption and evaporation load,
affection 5-40% porous materials, with minimal absorption into low evaporated materials
Class 3 correct answers has the greatest amount of water absorption and evaporation load,
affecting more than 40% porous materials and minimal absorption into low evaporated materials
Class 4 correct answers has deeply held or bound water, and significant absorption into low
evaporation materials.
Determine the Class of water for a 20' x 20' x 8 ' room, with an entirely wet floor.. correct
answers Affected area/Total SF = % affected
, 400/1440 = .27777 x 100 = 28%
28% = Class 2
Determine the Class of Water for a 20' x 20' x 8' room, with only half the floor affected and
arriving within 24 hours of loss. correct answers Affected area/total sf = % affected
200/1440 = .13888 x 100 = 14%
14% = Class 2
Determine Class of water for a 20' x 20' x 8' room, with entirely wet plywood subfloor arriving
48 hours after loss correct answers affected area/total sf = % affected
Class 4 due to deeply bound water sitting for long time
Categories of Water correct answers there are four categories - determined by range of
contamination of the source and quality of water
Category 1 water correct answers Water originating from sanitary water source, with no
deterioration, does not pose risk to skin or if ingested
Category 2 Water correct answers Water containing significant contamination from materials,
unsafe levels of microorganisms, causes discomfort or sickness.
Category 3 Water correct answers Water grossly contaminated with pathogens, toxins, bacteria,
causes sickness
Regulated or Hazardous Material and Mold correct answers the last category of water, without
number designation, requiring a specialized environmental expert (EIP) to assist where
government regulations apply.
The ANSI/IICRC S500 correct answers Is the standard of care for the water damage restoration
industry, providing foundation for basic principles of proper restoration practices.
When the ANSI/IICRC S500 uses the word "Shall" it means correct answers it is something
mandatory due to laws/regulations
When the ANSI/IICRC S500 uses the word "Should" it means correct answers it is something
that is mandatory but not due to laws
When the ANSI/IICRC S500 uses the word "Recommended" it means correct answers it is
something that is advised or suggested to do
Psychrometry correct answers the study of the relationship between air, humidity, temperature
and their effects on various materials
True or False correct answers A hygroscopic material will continue to absorb water or water
vapor until it reaches equilibrium with the surrounding environment
