30 Questions
What is the purpose of the WRT Study Guide?
To enhance the learning experience in the water restoration field
What does the SDS (Safety Data Sheet) identify?
Characteristics of chemicals and what to do if ingested or in contact with eyes, skin, etc.
Where should the SDS be kept according to the text?
Within reaching distance of the vehicle's driver while wearing a seatbelt
What is a Work Authorization in the context of water restoration?
A contract between the contractor and the home or business owner or party responsible for payment
What is the purpose of an Antimicrobial (Biocide) Authorization?
To give consent for using antimicrobials within a structure
Who should sign the Antimicrobial (Biocide) Authorization according to the text?
All parties involved in the project
In Class 3 water damage, what percentage of the combined floor, wall, and ceiling surface area in the space is represented by wet, porous materials?
More than 40%
Which class of water damage involves deeply held or bound water?
Class 4
For Class 2 water damage, what percentage of the combined floor, wall, and ceiling surface area in the space is represented by wet, porous materials?
Between 5% and 40%
Which materials are described as low evaporation materials in the context of water damage classification?
Plaster, wood, concrete
What defines Class 1 water damage in terms of the amount of water absorption and evaporation load?
Least amount of water absorption and evaporation load
Which class of water damage includes scenarios where wet, porous materials represent less than ~5% of the combined floor, wall, and ceiling surface area in the space?
Class 1
What is a tool used for sub-surface 'sealed' extraction?
Water Claw
Which type of dehumidifier works through condensation and is most efficient in 70˚-90˚F temperatures?
Refrigerant dehumidifier
How can you determine the amount of standing water in a crawl space or basement?
Calculating cubic feet of water (Length x Width x Depth of water)
Which tool is used for compression during water extraction?
Weighted tool like Drieaz's Rover
What type of dehumidifier is useful in colder conditions and produces low vapor pressure ideal for drying class 4 water losses?
Desiccant dehumidifier
What equipment enhances evaporation during the drying process?
Air mover
What is the dry standard based on?
Moisture reading of an unaffected material
Which tool is used to determine the edge of water migration in carpet and pad?
Moisture sensor
What is the relationship studied in psychrometry?
Airflow, humidity, and temperature
What does GPP stand for in psychrometry?
Grains Per Pound
What does dew point represent?
Temperature at which humidity condenses
How is relative humidity expressed?
As a percentage
What is the purpose of an AFD (Air Filtration Device) in the context mentioned?
To dry out structural cavities
What does the formula Refrigerant-cubic feet (LxWxH of area) ÷ factor = initial pints needed minimum represent?
Total AHAM pints required
What is the purpose of the AHAM rating for dehumidifiers mentioned in the text?
To express the number of pints of water removed
Which formula is used to calculate the minimum CFM (cubic feet per minute) required for dehumidifiers?
Desiccant- cubic feet × factor = total CFH ÷ 60 = initial CFM
What is the role of the 'four knows' of drying mentioned in the text?
To assess if an area is wet, how wet it is, if it is drying, and if it is dry
What does the Desiccant formula (cubic feet × factor = total CFH ÷ 60) calculate?
Initial CFM (cubic feet per minute) needed
Test your knowledge on various extraction tools and techniques used in carpet cleaning, such as light wands, deep extraction tools like Water Claw and weighted tools like Drieaz's Rover. Learn about determining the amount of standing water in crawl spaces or basements.
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