Ventilation (Overview) Flashcards
Homes with ventilated crawl spaces require a ventilation opening within _________ feet of each corner of a building. Found in R408.2
a: 2
b: 3
c: 4
d: 5
b: 3
Ventilated crawl spaces require a minimum of 1 square foot of ventilation opening to every __________ square feet of crawl space floor area.
a: 100
b: 120
c: 150
d: 300
c: 150
The simplest type of whole-house ventilation system is:
a: Ducted central exhaust systems
b: Heat recovery systems
c: Supply only ventilation fan
d: Return air systems
c: Supply only ventilation fan
Most bath fan systems will use a ___________ fan.
a: 25-CFM to 50-CFM
b: 50-CFM to75-CM
c: 50-CFM to 100-CFM
d: 100-CFM to 200-CFM
c: 50-CFM to 100-CFM
Central ventilation systems:
a: Require more ductwork than other systems
b: Are more expensive to install
c: Are difficult to retrofit in an existing home
d: all the above
d: all the above
This system pulls exhaust air from bathrooms and kitchens and run it through a heat exchanger to heat or cool incoming air:
a: Central ventilations systems
b: Return air systems
c: Central exhaust systems
d: Heat recovery systems
d: Heat recovery systems
The minimum net free ventilating area shall be _______ of the vented space.
a: 1/75
b: 1/100
c: 1/150
d: 1/300
c: 1/150
The most common mistake homeowners make when installing insulation is to
a: Block the flow of air at the eaves
b: to place the installation too close to the rafters
c: To cram the insulation between the studs
d: Leave too much space around the rafter vents
a: Block the flow of air at the eaves
In Michigan, any air-impermeable insulation must be a _________ vapor retarder.
a: Class I
b: Class II
c: Class III
d: Class IV
b: Class II
Code allows that the ventilation ratio be reduced to 1 square foot of ventilation to ______ square feet when the ground surface is covered with 6 mil polyethylene.
a: 500
b: 1000
c: 1500
d: 2000
c: 1500
