General Passive Building Review Exam Questions And Answers
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What building component prevents water, leaking through the cladding, from wetting structural building materials?
Select one:
a. Vapor barrier
b. Water-resistive barrier
c. Flashing
d. Vapor retarder
e. Capillary barrier - ANS Water-resistive barrier
Which three of the following me...
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General Passive Building Review Exam
Questions And Answers
What building component prevents water, leaking through the cladding, from wetting structural
building materials?
Select one:
a. Vapor barrier
b. Water-resistive barrier
c. Flashing
d. Vapor retarder
e. Capillary barrier - ANS Water-resistive barrier
Which three of the following methods can prevent the movement of groundwater into the
building through capillary action?
Select one or more:
a. Using gravel up to 1/2 inches in diameter under concrete slabs
b. Using vapor permeable materials for ground contact
c. Air sealing the foundation wall
d. Waterproofing the exterior of the foundation wall
e. Installing rubberized gaskets between materials with ground contact and materials above
them
f. Installing a polyethylene ground moisture barrier - ANS Installing a polyethylene ground
moisture barrier, Installing rubberized gaskets between materials with ground contact and
materials above them, Using gravel up to 1/2 inches in diameter under concrete slabs
Which of the following best defines a "cold roof"?
Select one:
a. A roof with effective ventilation that allows the roof deck to stay cold during winter months
b. A roof assembly where the roof cavities are insulated with fibrous insulation in the roof deck is
insulated with foam insulation
c. An unvented attic where the roof deck is insulated from below by spray foam insulation
d. An un-ventilated roof cavity that stays cold during the winter
e. A superinsulated unventilated roof that allows no heat transmission to heat the roof deck -
ANS roof with effective ventilation that allows the roof deck to stay cold during winter
months
What is the maximum air leakage at pressure test, per gross square foot of total building
enclosure area, that PHIUS+ 2018 buildings must achieve?
,Select one:
a. None of the above
b. 0.06 CFM @ 50Pa
c. 0.06 ACH @ 50Pa
d. 0.006 CFM @ 75Pa
e. 0.6 CFM @ 50Pa - ANS 0.06 CFM @ 50Pa
Which three of the following statements are true about domestic hot water systems in PHIUS+
buildings?
Select one or more:
a. PHIUS+ buildings are required to follow EPA WaterSense distribution requirements.
Therefore, hot water distribution systems may store no more than 0.5 gallons of water between
hot water sources and hot water fixtures
b. Domestic hot water storage tanks in PHIUS+ buildings don't need insulation
c. Domestic water heating efficiency in PHIUS+ buildings is typically better than in conventional
buildings
d. The annual energy consumption for domestic hot water is higher passive buildings and
conventional buildings
e. Air-source heat pump water heaters will cool the space/room they're located in - ANS
-PHIUS+ buildings are required to follow EPA WaterSense distribution requirements. Therefore,
hot water distribution systems may store no more than 0.5 gallons of water between hot water
sources and hot water fixtures
-Domestic water heating efficiency in PHIUS+ buildings is typically better than in conventional
buildings
-Air-source heat pump water heaters will cool the space/room they're located in
Which five of the following choices would be included in a list of ventilation best practices for
passive buildings?
Select one or more:
a. Locate exhaust grills in bathrooms and kitchen and supply grills in living rooms and bedrooms
b. Keep ducts carrying conditioned air inside the thermal envelope
c. Air seal all ducts to <3% leakage
d. Eliminate duct runs outside the conditioned space
e. Use flex ducts when you need to minimize friction losses
f. Insulate all ducts with vapor-permeable insulation
g. Insulate ducts delivering conditioned air with vapor-impermeable insulation
h. Run supply air ducts all the way to the perimeter of the building - ANS -Eliminate duct
runs outside the conditioned space, Insulate ducts delivering conditioned air with
vapor-impermeable insulation
-Keep ducts carrying conditioned air inside the thermal envelope
-Air seal all ducts to <3% leakage, Locate exhaust grills in bathrooms and kitchen and supply
grills in living rooms and bedrooms
What type of HRV uses layers of parallel air channels in its heat exchanger?
, Select one:
a. Cross-flow HRV
b. Crossover-type HRV
c. Counterflow HRV
d. Transverse-flow HRV
e. Enthalpy-wheel HRV - ANS Counterflow HRV
Which three of the benefits listed are associated with the high level of air-tightness required for
PHIUS+ projects, relative to conventional buildings?
Select one or more:
a. Minimized drafts to enhance comfort
b. Building envelope durability
c. Energy savings
d. Reduced solar absorptance for decreased cooling costs
e. Reduced vapor diffusion to reduce the risk of condensation on interior surfaces - ANS
-Energy savings
-Building envelope durability
-Minimized drafts to enhance comfort
What range of sensible recovery efficiency would you expect from a highly efficient HRV in
terms of recycling heat energy between the intake air stream and the exhaust air stream?
Select one:
a. 82-90%
b. 40-50%
c. 50-75%
d. 96-99%
e. 87-93% - ANS 87-93%
What is the maximum recommended temperature difference between interior surfaces and
interior air in PHIUS+ buildings?
Select one:
a. 68.0° F
b. 24.7° F
c. 7.2° F
d. 6.8° F
e. 2.5°F - ANS 7.2° F
Which of the following is a synonym for a Class I vapor retarder?
Select one:
a. Air-vapor barrier
b. Air barrier
c. Vapor barrier
d. Vapor diffusion barrier
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