Quiz Flashcards
The FOUR Principles of Drying are
R - Remove Excess
E - Evaporation
D - Dehumidification (Ventilation)
T - Temperature Control
The ANSI/IICRC S500 defines the Category of water which ORIGINATES FROM A SANITARY WATER SOURCE and does not pose substantial risk to humans is
Category 1
The CLASS OF WATER with the GREATEST EVAPORATION potential amount of evaporation, due to the greatest amount of absorption (more than ~40% floor, wall, and ceiling area combined) is
Class 3
The CLASS OF WATER with wet materials with low permeance/porosity and deep pockets of saturation with water that is hidden, trapped or bound with LOW EVAPORATION,
- is also known as Class:
- is often referred to as:
Class 4
AKA - Special Drying Situation
The CLASS OF WATER with the LEAST amount of water and EVAPORATION (small area – comprising less than ~5% of floor, wall, and ceiling area combined) is
Class 1
When water contains significant contamination and potential to cause discomfort or sickness, it is called
Category 2
A water intrusion with wet porous materials representing ~5% - to- less than ~40% of
combined floor, wall, and ceiling surface area (carpet, gypsum board, fiber-fill insulation) is known as Class:
Class 2
Monitoring to document and adjust goals should be performed at least:
DAILY
An IEP, used to perform services beyond the expertise of the restorer, which may be needed initially, or at the end of a project, is an acronym for
Indoor Environmental Professional
Two documents to determine if evaporation and dehumidification process is adequate are
- MOISTURE MAP (validates moisture content and location)
& - DAILY HUMIDITY RECORD (helps determine if evaporation and dehumidification
process is adequate)
Before wearing respirators, the “Company Protection Plan” states all employees shall be: a. b. and trained to c.
a) medical evaluation
b) fit tested
c) trained: don, doff, clean/maintain
Light wand will most effectively extract which type carpet installation?
direct glue-down
The most effective principle to reduce drying time is:
Thorough and meticulous extraction
The tool used to safely extract water from hard surfaces (e.g., concrete, wood, vinyl) without damaging finished flooring or the extraction wand is:
and is also known as:
hard surface wand (a.k.a., vacuum squeegee)
(FILL-IN FORMULA)
The formula to compute gallons of standing water is written as:
a) _______x ___________÷ ______ = (cubic footage) x _______ = (_________to pump-out)
L x H (sq ft) (x Depth) ÷ 12 = (cubic footage)
x 7.48 = (gallons of water to pump-out)
The approximate number of gallons in a 22 ft. x 22 ft. (6.7 m x 6.7 m) basement flooded with 3 ft. 4 inches (40 inches or 1.0 m) of water is:
12,067
[22x22 (x40)=19,360
19,360÷12=1613.3 or 1614
1613.3x7.48=12,067.7
Two tools to use when relieving tension on carpet while disengaging at corners, are:
- )
- )
- Knee Kicker
2. Carpet Awl
Once inspected and determined if carpet is glue-down…or…if installed over cushion (padding), the easiest of the two installation processes to extract is:
a)
direct glue-down
The government regulatory AGENCY dictating employee health and safety in the workplace is:
a)
OSHA (Occupational Safety and Health Administration)
When using conventional refrigerant dehumidifiers in a Class 2 water loss containing 12,000 ft3 (339 m3), the initial AHAM-rated capacity recommended (pints per day) is:
300
On #1,
(refrigerant dehumidifiers in a Class 2 water loss containing 12,000 ft3 (339 m3))
if a dehumidifier which processes 64 pts. at AHAM is used, the recommended
number of units to install is:
5
When using low grain refrigerant (LGR) dehumidifiers on a Class 3 that is capable of removing 130 pints (61 liters) at AHAM, the recommended # of units to be installed initially within drying chamber of 36,000 ft3 (1019.4 m3) is:
7
When using desiccant dehumidification to dry a structure with deeply-held bound water in plaster walls or cupped hardwood flooring in 40 ft x 65 ft. (12m x 19.5m) with 9-foot (2.7 meter) ceilings, the initial CFM for dehumidification is:
1170
On #4,
(deeply held water; 40 ft x 65 ft. (12m x 19.5m) with 9-foot (2.7 meter) ceilings)
if the desiccant used processes 385 cfm, the recommended number of units is:
4
On #4,
[deeply bound, 40 ft x 65 ft. with 9-foot ceiling]
if the desiccant used processes 900 cfm, the recommended number of units is:
2
After installing one airmover in each affected area, three (3) additional calculations SHOULD include adding one (1) airmover every:
a)
b)
c)
a. ) 50-70 sq. ft. floor up to 24”;
b. ) 100-150 – wall/ceiling over 24”;
c. ) offset over 18”
When calculations end with a partial room, calculations require rounding to the:
a)
next whole number
Airmovers may overheat and decrease cfm/air movement if:
a)
inlet screens are blocked
The rate of evaporation is greatly influenced by (correct PATH to evaporation):
a) P
b) A
c) T
d) H
a) P - Permeance;
b) A - Airflow;
c) T - Temperature;
d) H - Humidity
Refrigerant dehumidifiers work on the principle of:
a)
condensation
Desiccant dehumidifiers work on the principle of:
a)
b) by using what product
a) sorption “AD”sorption
b) by using silica gel
Refrigerant dehumidifiers are rated most efficient between the temperature range of:
a)
b) its sweet spot (highly efficient temperature)
a) 70-90
b) ‘sweet spot’ 85-90
Although LGR dehumidifiers start to lose efficiency below 34 gpp, conventional refrigerant dehumidifiers start losing efficiency below:
a)
55 gpp
AHAM (Association of Home Appliance Manufacturers) rating for temperature and relative humidity is computed at:
a) (TEMP) - ___ degrees
b) (RH) - ___ %
Temp - 80
RH - 60%
To determine INITIAL dehumidifier capacity recommendations, it is required to know:
a)
b)
c)
a) cu. ft. affected area;
b) class of intrusion;
c) dehumidifier type
The type dehumidifier that creates the greatest difference in Vapor Pressure between ambient and processed air (across a broad range of temperatures and gpp), is:
a)
desiccant (greatest different in gpp IS greatest VP difference
The type dehumidifier that creates difference in Air Pressures due to wet reactivation air ducted outside (or dry air ducted into the wet area from the outside) is:
a)
Desiccant (consistently creating air pressure difference (positive/negative)
The approximate number of gallons in a 17 ft. x 34 ft. (5.1 m x 10.2 m) basement flooded with 1 ft. 8 inches (20 inches / .5 m) of water is:
7205
When using conventional refrigerant dehumidifiers in a Class 3 water loss containing 10,500 ft3 (294 m3), the initial AHAM-rated capacity recommended (pints per day) is:
350
On #2,
[conventional refrigerant dehumidifiers in a Class 3 water loss containing 10,500 ft3]
if a dehumidifier which processes 70 pts. at AHAM is used, the initial recommended number of units to install is:
5
When using low grain refrigerant (LGR) dehumidifiers on a Class 2 that all are rated capable of removing 170 pints (80 liters) at AHAM, the initial recommended number of units to be installed within drying the chamber of 27,000 ft3 (756 m3) is:
4
