IICRC APPLIED STRUCTURAL DRYING
ACTUAL TEST FULL QUESTIONS AND
CORRECT ANSWERS EXAMPREP STUDY
SHEET
●● Category 2
Answer: Gray
Contaminated; potentially causes discomfort or sickness
●● Category 3
Answer: Black
Grossly contaminated; includes toxins, pathogens
●● Regulated or Hazardous Materials and Mold
Answer: IEP recommended
●● Class 1
Answer: (least amount of water, absorption and evaporation) wet less
than ~5% of combined floor, wall, and ceiling surface area -minimal
moisture absorption into the materials
●● Class 2
,Answer: (large amount of water, absorption and evaporation) wet
between ~5 -~40%of combined floor, wall, and ceiling surface area -
minimal moisture absorption into the materials
●● Class 3
Answer: (greatest amount of water, absorption and evaporation) wet
more than ~40% of combined floor, wall, and ceiling surface area -
minimal absorption into the materials
●● Class 4
Answer: Area -minimal absorption into the materials Class 4-(deeply
held or bound water)-(e.g., hardwood; lath and plaster; concrete) -water
hidden, trapped, or bound in low evaporation assemblies; requires
controlled drying techniques, low vapor pressure, specialty equipment
probable
●● Principles of Drying
Answer: Remove excess Evaporation Dehumidification (ventilation)
Temperature control
●● Light Wand
Answer: Perimeter of water loss; extract glue-down carpets; follow-up
extraction-stationary too
,●● Stationary Wand
Answer: Water claw; Flash Xtractor) -subsurface tool; extract
carpet/cushion together
●● Self-propelled wand
Answer: Rover; Xtreme Xtractor) -self-propelled riding tool; multi-
speed; extract carpet and cushion
●● Squeegee wand
Answer: Concrete; hardwood; vinyl; laminate
●● Submersible Pumps
Answer: Formula -(ft2 x inches deep) ÷ 12" = ft3 water x 7.48= water
volume
●● Centrifugal
Answer: Laminar
●● Axial
Answer: High-amperage; low-amperage; focus ability
●● Air Mover Calculations
Answer: Initially one airmovereach affected room
, Additionally, add one:
Every 50-70 sq. ft. wet floor and walls up to 24 inches high
Every 100-150 sq. ft. of affected wet ceiling and walls over 24 inches
high
Each wall offset greater than 18 inches
One per 14 LF of all only (if ony lower wall and limited flooring)
One per small areas under 25 sq ft. if upper walls and ceilings not
affected
●● SCDS Vent Ducted
Answer: Turbovents 18"-48" widths; Octi-dry; AirWolf
●● SCDS Injected
Answer: Injectidry; Dri-Force; Omni-dry; Direct-it In
●● FDS Vented
Answer: Air Wolf
●● FDS Injected
Answer: negative air mats/panels
Dri-Force; Injectidry
●● AFD
ACTUAL TEST FULL QUESTIONS AND
CORRECT ANSWERS EXAMPREP STUDY
SHEET
●● Category 2
Answer: Gray
Contaminated; potentially causes discomfort or sickness
●● Category 3
Answer: Black
Grossly contaminated; includes toxins, pathogens
●● Regulated or Hazardous Materials and Mold
Answer: IEP recommended
●● Class 1
Answer: (least amount of water, absorption and evaporation) wet less
than ~5% of combined floor, wall, and ceiling surface area -minimal
moisture absorption into the materials
●● Class 2
,Answer: (large amount of water, absorption and evaporation) wet
between ~5 -~40%of combined floor, wall, and ceiling surface area -
minimal moisture absorption into the materials
●● Class 3
Answer: (greatest amount of water, absorption and evaporation) wet
more than ~40% of combined floor, wall, and ceiling surface area -
minimal absorption into the materials
●● Class 4
Answer: Area -minimal absorption into the materials Class 4-(deeply
held or bound water)-(e.g., hardwood; lath and plaster; concrete) -water
hidden, trapped, or bound in low evaporation assemblies; requires
controlled drying techniques, low vapor pressure, specialty equipment
probable
●● Principles of Drying
Answer: Remove excess Evaporation Dehumidification (ventilation)
Temperature control
●● Light Wand
Answer: Perimeter of water loss; extract glue-down carpets; follow-up
extraction-stationary too
,●● Stationary Wand
Answer: Water claw; Flash Xtractor) -subsurface tool; extract
carpet/cushion together
●● Self-propelled wand
Answer: Rover; Xtreme Xtractor) -self-propelled riding tool; multi-
speed; extract carpet and cushion
●● Squeegee wand
Answer: Concrete; hardwood; vinyl; laminate
●● Submersible Pumps
Answer: Formula -(ft2 x inches deep) ÷ 12" = ft3 water x 7.48= water
volume
●● Centrifugal
Answer: Laminar
●● Axial
Answer: High-amperage; low-amperage; focus ability
●● Air Mover Calculations
Answer: Initially one airmovereach affected room
, Additionally, add one:
Every 50-70 sq. ft. wet floor and walls up to 24 inches high
Every 100-150 sq. ft. of affected wet ceiling and walls over 24 inches
high
Each wall offset greater than 18 inches
One per 14 LF of all only (if ony lower wall and limited flooring)
One per small areas under 25 sq ft. if upper walls and ceilings not
affected
●● SCDS Vent Ducted
Answer: Turbovents 18"-48" widths; Octi-dry; AirWolf
●● SCDS Injected
Answer: Injectidry; Dri-Force; Omni-dry; Direct-it In
●● FDS Vented
Answer: Air Wolf
●● FDS Injected
Answer: negative air mats/panels
Dri-Force; Injectidry
●● AFD
