ASD Exam
Category 1 Category of Water that originates from sanitary water source (Clean)
Catetroy 2 Category of Water that is contaminated; may cause discomfort or sickness
(Grey)
Category 3 Category of Water that is grossly contaminated; includes toxins, pathogens
Special Situation Regulated or hazardous materials
Class 1 Class of water that has least amount of water, absorption and evaporation
Class 2 Class of water that has large amount of water, absorption and evaporation
(carpet; cushion; base of walls)
Class 3 Class of water that is the greatest amount of water, absorption and evaporation
(ceiling; walls; insulation; flooring)
Class 4 Class of water - Hardwood; plaster; concrete - Deep pockets of saturation
Principles of Drying Remove excess / Evaporation / Dehumidification (Ventilation) / Temperature
Control
Light Wand Extraction Tool - Perimeter of water loss; extract glue-down carpets
Stationary Tool (Water Claw) Extraction Tool - Subsurface Tool; Extract Carpet and Cushion.
Self-Propelled Tools Extraction Tool - (Rober; Xtreme Xtractor) - Riding Tool; multi-speed; extract
carpet and cushion.
Vacuum Squeegee Extraction Tool - Concrete; hardwood; vinyl; laminate;
Airmovers Evaporation Tool - centrifugal (laminar); axial (high-amperage; low amperage;
focus ability)
1 per 10-16 linear ft. of wall area; 15-45 degree focus; Placement of Airmovers
almost touching wall.
Structural Cavity Drying Systems (SCDS)
vented (turbovents 18" - 48" widths' Octidry; Air Wolf
injected (Injectidry; Dri-Force; Direct-it In)
, ASD Exam
Floor Drying System vented (Air Wolf)
Injected - negative air mats (Dri-Force; Injectidry)
Air Filtration Devices AFDs (negative air machines; air scrubbers; HEPA filters)
AHAM Rating On dehumidification equipment it is the pints removed at 80 degrees and 60%
humidity in 24 hours.
Standard Refrigerant Temperature - 68 degress
Relative Humidity - 60%
Specific Humidity (gpp) - 55-60
Conventional Temperature - 33 degrees
Relative Humidity - 40%
Specific Humidity (gpp) - 55-60
Low Grain Refrigerant (LGR) Temperature - 40 degrees
Relative Humidity - 30%
Specific Humidity (gpp) - 28-35
Desiccant Temperature - 32 degrees
Relative Humidity - 10% - below
Specific Humidity (gpp) - 10-15 - below
Refrigerants Dehumidifiers that are most efficient operating conditions 70-90 degrees (most
energy efficient)
Desiccants Dehumidifiers that are most efficient with incoming air from coolest/driest air
possible; capable of creating pressure differentials; produces low specific
humidity required to dry Class 4 materials.
Conventional Initial Dehumidification Calculations
Class 1 = 100
Class 2 = 40
Class 3 = 30
Class 4 = N/A
LGR Initial Dehumidification Calculations
Class 1 = 100
Class 2 = 50
Class 3 = 40
Class 4 = 50
Desiccant Initial Dehumidification Calculations
Class 1 = 1 ACH
Class 2 = 2 ACH
Class 3 = 3 ACH
Class 4 = 2 ACH
Amperes (amperage or amps) The amount of electricity (current) flowing in a circuit
Voltage The force of electricity flow in a circuit
Watts The amount of electricity an electrical devices uses when operating
, ASD Exam
BTUs (British Thermal Units) Heat generated by electrical device.
amps x volts x 3.4 BTUs per hour formula
12,000 HVAC removes _________ BTUs per ton.
15 Residental is generally ___ amp
20 Commerical is generally ___ amp
220 splitters Use where there is limited amperage or fuses
2 - 100 Use no more than ____, five-amp airmovers per ____ ft., 12 gauge extension
cord.
volts x amps x 24 hours = watts / 1000 = kw x cost per Power Consumption Formula
kw per day
Moisture Sensor Senses moisture in materials over 17% MC; helps determine perimeter of water
damage; unable to determine which layer is wet or when dry.
Thermo-hygromter Determines temperature / RH in all required atmospheric areas of inspection;
helps determine open or closed drying system; further determines dehumidifier
requirements after initial placement.
Moisture Meter Invasive and non-invasive; determines moisture content; establish, monitor and
determine when dry standards are met.
Miscellaneous - infrared camera and thermometer; manometer; borescopes;
data loggers.
EPA (Environmental Protection Agency) U.S. federal agency with regulatory control over biocides
FIFRA (Federal Insecticide, Fungicide and Rodenticide U.S. federal regulations administered by the EPA
Act)
Stretch-In, Direct Glue-Down, Double Glue Down Three installation methods for carpet.
In-place, Full Float, Partial Float Three drying methods for carpet.
Category 1 Category of Water that originates from sanitary water source (Clean)
Catetroy 2 Category of Water that is contaminated; may cause discomfort or sickness
(Grey)
Category 3 Category of Water that is grossly contaminated; includes toxins, pathogens
Special Situation Regulated or hazardous materials
Class 1 Class of water that has least amount of water, absorption and evaporation
Class 2 Class of water that has large amount of water, absorption and evaporation
(carpet; cushion; base of walls)
Class 3 Class of water that is the greatest amount of water, absorption and evaporation
(ceiling; walls; insulation; flooring)
Class 4 Class of water - Hardwood; plaster; concrete - Deep pockets of saturation
Principles of Drying Remove excess / Evaporation / Dehumidification (Ventilation) / Temperature
Control
Light Wand Extraction Tool - Perimeter of water loss; extract glue-down carpets
Stationary Tool (Water Claw) Extraction Tool - Subsurface Tool; Extract Carpet and Cushion.
Self-Propelled Tools Extraction Tool - (Rober; Xtreme Xtractor) - Riding Tool; multi-speed; extract
carpet and cushion.
Vacuum Squeegee Extraction Tool - Concrete; hardwood; vinyl; laminate;
Airmovers Evaporation Tool - centrifugal (laminar); axial (high-amperage; low amperage;
focus ability)
1 per 10-16 linear ft. of wall area; 15-45 degree focus; Placement of Airmovers
almost touching wall.
Structural Cavity Drying Systems (SCDS)
vented (turbovents 18" - 48" widths' Octidry; Air Wolf
injected (Injectidry; Dri-Force; Direct-it In)
, ASD Exam
Floor Drying System vented (Air Wolf)
Injected - negative air mats (Dri-Force; Injectidry)
Air Filtration Devices AFDs (negative air machines; air scrubbers; HEPA filters)
AHAM Rating On dehumidification equipment it is the pints removed at 80 degrees and 60%
humidity in 24 hours.
Standard Refrigerant Temperature - 68 degress
Relative Humidity - 60%
Specific Humidity (gpp) - 55-60
Conventional Temperature - 33 degrees
Relative Humidity - 40%
Specific Humidity (gpp) - 55-60
Low Grain Refrigerant (LGR) Temperature - 40 degrees
Relative Humidity - 30%
Specific Humidity (gpp) - 28-35
Desiccant Temperature - 32 degrees
Relative Humidity - 10% - below
Specific Humidity (gpp) - 10-15 - below
Refrigerants Dehumidifiers that are most efficient operating conditions 70-90 degrees (most
energy efficient)
Desiccants Dehumidifiers that are most efficient with incoming air from coolest/driest air
possible; capable of creating pressure differentials; produces low specific
humidity required to dry Class 4 materials.
Conventional Initial Dehumidification Calculations
Class 1 = 100
Class 2 = 40
Class 3 = 30
Class 4 = N/A
LGR Initial Dehumidification Calculations
Class 1 = 100
Class 2 = 50
Class 3 = 40
Class 4 = 50
Desiccant Initial Dehumidification Calculations
Class 1 = 1 ACH
Class 2 = 2 ACH
Class 3 = 3 ACH
Class 4 = 2 ACH
Amperes (amperage or amps) The amount of electricity (current) flowing in a circuit
Voltage The force of electricity flow in a circuit
Watts The amount of electricity an electrical devices uses when operating
, ASD Exam
BTUs (British Thermal Units) Heat generated by electrical device.
amps x volts x 3.4 BTUs per hour formula
12,000 HVAC removes _________ BTUs per ton.
15 Residental is generally ___ amp
20 Commerical is generally ___ amp
220 splitters Use where there is limited amperage or fuses
2 - 100 Use no more than ____, five-amp airmovers per ____ ft., 12 gauge extension
cord.
volts x amps x 24 hours = watts / 1000 = kw x cost per Power Consumption Formula
kw per day
Moisture Sensor Senses moisture in materials over 17% MC; helps determine perimeter of water
damage; unable to determine which layer is wet or when dry.
Thermo-hygromter Determines temperature / RH in all required atmospheric areas of inspection;
helps determine open or closed drying system; further determines dehumidifier
requirements after initial placement.
Moisture Meter Invasive and non-invasive; determines moisture content; establish, monitor and
determine when dry standards are met.
Miscellaneous - infrared camera and thermometer; manometer; borescopes;
data loggers.
EPA (Environmental Protection Agency) U.S. federal agency with regulatory control over biocides
FIFRA (Federal Insecticide, Fungicide and Rodenticide U.S. federal regulations administered by the EPA
Act)
Stretch-In, Direct Glue-Down, Double Glue Down Three installation methods for carpet.
In-place, Full Float, Partial Float Three drying methods for carpet.
