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which is not one of the four primary humidity
ways moisture moves through
buildings?
-capillary seepage
-humidity
-air movement
-vapor diffusion
a combustion appliance fails spillage 120
if it spills flue gasses for ___ seconds?
-90
-60
-30
-120
what establishes the R-value ratings NFRC
for windows and doors?
,where should the test hole be drilled 1'-2' downstream of the appliance draft diverter
for determining draft on appliances?
what is the R-value of a window with 4
a U factor of 0.25?
-2
-3
-1
-4
according to BPI standards, what Material Safety Data Sheet
must be kept on each crew vehicle
and made available to all workers
and clients upon request?
according to the BPI standards, what -2 pa
is the CAZ depressurization limit for
an orphaned natural draft water
heater?
- -2cfm
- -2 pa
- -5cfm
- -5 pa
if wood is placed in wet soil, what the wetness of the soil will move into the wood
moisture gradient will occur?
what does the blower door test air leakage level of the building
evaluate?
according to ASHRAE, homes should 0.35, 15
receive at least __ air changes per
hour or __ cfm per person
, asbestos is a "known carcinogen" windows
found in all of the following except?
-siding
-steam-pipe insulation
-floor tiles
-windows
digital readouts for carbon cubic feet per minute (CFM)
monoxide tests are given in:
-cubic inches per minute (CIM)
-cubic feet per minute (CFM)
-parts per million (PPM)
-inches of water column (IWC)
the first step when conducting a measure the base pressure
combustion appliance zone test is
to:
-establish worst case
-measure the worst case spillage
-measure the base pressure
-action levels
the combination of air temperature, comfort
radiant temperature, humidity, and air
movement determine
what is not a sign flexible gas lines if they're made of a silicone material
need to be replaced?
-if they're kinked
-if they're corroded
-if they're made of a silicone material
-if the line was manufactured before
1973