ASD COURSE EXAM STUDY MATERIAL

Question 1

what are “in place” drying techniques?

Answer 1

Leave the baseboards in place and dry with very dry air

Question 2

A restorer must know __________ and _________. Once this has been identified the restorer must ________

Answer 2

where the water went
and what is wet
address the wet areas/materials as scope of loss

Question 3

____ studs often trap moisture in the _______. And it is very prudent to inspect them.

Answer 3

metal studs
“c” channels

Question 4

water that has caused blown cellulosic insulation to become wet will potentially cause it to pack down and lose ______. This compromising consequence is NOT applicable to ALL types of insulation. If the water rises above the sill plate level, it is appropriate to _________

Answer 4

“r” value
inspect the insulation via inspection holes in the wallboard

Question 5

Which is more efficient ? Physical extraction or evaporation of water?
Is it more important to know how much water is left behind? or how much was removed?

Answer 5

Physical is more efficient.
How much was left behind.

Question 6

When a wet carpet is over a cushion use _____ extraction. When wet carpet is glued down use a ______. You will know the extraction is adequate when water cannot be squeezed from the cushion with your hands.

Answer 6

Deep extraction
Light wand

Question 7

When extracting water from a carpet and pad, the hoses should be the ______ in length and in ______ straight stretches.

Answer 7

shortest in length, long straight stretches.

Question 8

Heavy face yarn carpet, multi level, made of olefin, looped yarn on a heavyweight pad are ________

Answer 8

difficult to extract from even with deep extraction tools

Question 9

In place drying techniques are good for category ___. Drying in place will not cause further damage, and there is enough drying equipment available.

Answer 9

1

Question 10

In a “in place” drying technique you extract from the _____ of the room first. Relocating the furniture on blocks or pads in the extracted area, and then completing extraction of the water from the ______. The furniture is typically left in the _____

Answer 10

center
perimeter
drying chamber

Question 10

Floor registers can often be ______. Enabling an inspection of the floor materials and its assembly.

Answer 10

Lifted

Question 11

_________ are very sensitive instruments that can give skewed readings. Technicians should be trained for their use.

Answer 11

Thermohygrometers

Question 12

100% relative humidity being “saturated” is ________ because air does not hold water. A better phrase is __________ because vapor pressure is produced when a phase change takes place.

Answer 12

Incorrect
Equilibrium vapor pressure

Question 13

a pound of anything can also be expressed as ______ grains

Answer 13

7000

Question 14

Humidity ratios are expressed as ______

Answer 14

Grains per pound of dry air

Question 15

as the environmental humidity decreases so will the _____ and _____ (given at a constant barometric pressure)

Answer 15

vapor pressure and dew point

Question 16

Some believe a pound of air is approximately __________

Answer 16

14 cubic feet.

Question 16

Cupping is from the ________. Crowning is from the ________

Answer 16

Bottom and sides
Top

Question 17

If a permeance “perm” rating is less than ___ it is considered a retarding material. The act of water vapor equalizing within a material is called _______

Answer 17

1.0
vapor diffusion

Question 18

_______ allows the GREATEST vapor permeance
_______ resists vapor permeance and has a low permeance rating

Answer 18

flat latex paint
high gloss enamel paint

Question 19

when air is drawn into a building through cracks and crevices, the building is undergoing ________. When the air inside the building is pressurized the air will drive out of the building through the cracks/crevices, this is called _______. Technicians can use these to control odors/contaminants.

Answer 19

infiltration
exfiltration

Question 19

you can use fans to create pressure differentials between the _______ and ______. This can be an open drying system.

Answer 19

drying chamber
another environment

Question 20

Restorer should understand the limitations to the amount of ______ that is passed through electrical extension cords. The NEC ____ rule must be followed to safely power the equipment.

Answer 20

Electricity
80%

Question 21

______ drying techniques usually employ the removal of doors between rooms to prevent restriction of airflow

Answer 21

In place drying

Question 22

Air movers are placed at ___ degree to ___ degree angels toward a wall spaced at 10-16 feet distance, while not physically touching the wall

Answer 22

15 to 45 degree angles

Question 23

driving dehumidified air into a wall cavity can _______ from the drying rate from the backside of the wallboard. It is assumed that the more airflow present, the faster the rate of drying. When drawing air out of a contaminated wall cavity, ____ filters should be used.

Answer 23

accelerate
HEPA

Question 23

the ______ dehumidifiers are the most efficient to remove bulk moisture from the air

Answer 23

low grain refrigerant

Question 24

The delta vapor pressure is determined when the atmospheric pressure is subtracted by the ________

Answer 24

vapor pressure within a saturated material.

Question 25

Negative pressure can cause

Answer 25

Odors and a backdraft of carbon monoxide

Question 26

Oil based paints are a

Answer 26

Vapor barrier

Question 27

1 air mover in each room. additional for every _______ SF of floor. And one for every _______ of ceiling and wall above 2 feet.

Answer 27

50-70
100-150

Question 28

NEC - ____ is the max power on any circuit

Answer 28

80%

Question 29

Must consider ____ CFM when evaluating grain depression

Answer 29

units

Question 30

when drying low-porosity materials, the greatest vapor pressure differential is when using a ________

Answer 30

Desiccant Dehumidifier

Question 31

test a performance of any dehumidification process is to check the _________ using a high quality ______. If the grain depression is a small number, the dehumidifier isn’t removing a lot of water.

Answer 31

grain depression
thermohygrometer

Question 32

whatever air enters the desiccant it will exit drier from _______

Answer 32

the other side

Question 33

desiccants perform the best when they are

Answer 33

fed with the coldest air possible

Question 34

Desiccant airstreams can produce _______ in the drying chamber.

Answer 34

pressure differentials

Question 35

HEPA is high efficiency particulate air. and is rated at _____. captures particulate larger than ____

Answer 35

99.97%
0.3u

Question 36

formula to calculate electrical cost is

Answer 36

amps X Volts X 24 / 1000 X cost per kilowatt hour

Question 37

there is _______ BTU per hour in a nominal ton of air conditioning

Answer 37

12,000 BTU

Question 37

Electrical appliance heat formula is

Answer 37

A X V = W X 3.4 = BTU per hour

Question 38

The environment should NOT exceed

Answer 38

70% RH

Question 39

The first place to inspect on a drying inspection is _________

Answer 39

directly in front of air movers

Question 40

LGR is 90F / 45% RH. Air leaving is 108F / 19% RH what is the grain depression ?

Answer 40

26.3

Question 41

What does Grain depression tell you?

Answer 41

rate of humidity removal

Question 42

Produces the lowest vapor pressure

Answer 42

Desiccants

Question 43

Desiccants have ____ air streams, and _____ validates its function

Answer 43

2
grain depression

Question 43

set air movers ____ feet along walls angled at ______

Answer 43

10-16 feet
15-45 degrees