Self-Test A-3.4 The Building as a System

Complete Self-Test A-3.4 and check your answers.

1. The building envelope can and should completely separate the indoors from the outdoors.
   1. True
   2. False

    

2. Cool air can contain more water vapour than warm air.
   1. True
   2. False

    

3. What term describes the process of air exiting a building?
   1. Infiltration
   2. Exfiltration
   3. Stack effect
   4. Distribution effect

    

4. What term describes the process of air entering a building?
   1. Infiltration
   2. Exfiltration
   3. Stack effect
   4. Distribution effect

    

5. The combustion air supply openings required by CSA B149.1 code are designed to replace the air exhausted by mechanical exhaust devices as well as the air used by gas appliances.
   1. True
   2. False

    

6. Pressure-induced backdrafting is the reversal of the flow of flue gases out of the building caused by negative pressure in the building.
   1. True
   2. False

    

7. What is the maximum house depressurization limit (HDL) that a natural draft vented appliance should be exposed to?
   1. 1 Pa (0.004 in. WC)
   2. 5 Pa (0.02 in. WC)
   3. 10 Pa (0.04 in. WC)
   4. 15 Pa (0.06 in. WC)

    

Answer Key: Self-Test A-3.4 is on the next page.