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KAA EXAC 2024 > 8.1,2,3 > Flashcards

8.1,2,3 Flashcards

1
Q

What is the condensation point?
A) The temperature at which a solid changes into a gas
B) The temperature at which a liquid changes into a solid
C) The temperature at which a material changes from a gas to a liquid; the same as the boiling point
D) The temperature at which a liquid changes into a gas

A

C) The temperature at which a material changes from a gas to a liquid; the same as the boiling point

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2
Q

What does EIFS stand for?

A

Exterior Insulation Finishing System

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3
Q

True or False: The freezing point is the temperature at which a liquid changes into a solid.

A

True

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4
Q

——– is a theory governing the design of a building enclosure to prevent water penetration due to rain by eliminating water leakage.

A

Rainscreen principle

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5
Q

What is a vapour retarder?

A) A layer that allows moisture to travel freely
B) A moisture-impervious layer applied to the surface enclosing a humid space to prevent moisture travel to a point where it may condense due to lower temperature
C) A material used to increase the temperature in humid spaces
D) A layer that enhances air circulation

A

B) A moisture-impervious layer applied to the surface enclosing a humid space to prevent moisture travel to a point where it may condense due to lower temperature

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6
Q

Name one source for detailed information about the rainscreen principles.

A) The National Building Code
B) Canadian Building Digest; CBD-40. Rain Penetration and its Control by G. K. Garden
C) The International Energy Conservation Code
D) The American Society of Heating, Refrigerating and Air-Conditioning Engineers

A

B) Canadian Building Digest; CBD-40. Rain Penetration and its Control by G. K. Garden

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7
Q

Multiple Choice: What are the four basic approaches to water penetration control in buildings?

A) Mass, Barrier, Internal drainage plane, and Conduction
B) Mass, Convection, Internal drainage plane, and Radiation
C) Mass, Barrier, Internal drainage plane, and Rainscreen
D) Conduction, Convection, Radiation, and Rainscreen

A

C) Mass, Barrier, Internal drainage plane, and Rainscreen

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8
Q

True or False: Rainscreen walls are designed to completely shed surface water with no moisture penetration.

A

False

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9
Q

:What are the two types of rainscreens?

A) Simple rainscreens and Internal rainscreens
B) Pressure-equalized rainscreens and Mass rainscreens
C) Simple rainscreens and Pressure-equalized rainscreens (PER)
D) Barrier rainscreens and Pressure-equalized rainscreens (PER)

A

C) Simple rainscreens and Pressure-equalized rainscreens (PER)

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10
Q

What is thermal protection in buildings?

A

The design and construction of a building and its components to prevent heat loss through the structure and its components or by air exchange, to maintain thermal comfort.

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11
Q

What are the three methods by which heat energy moves from a higher temperature to a lower temperature?

A) Absorption, Emission, Reflection
B) Conduction, Convection, Radiation
C) Diffusion, Convection, Reflection
D) Conduction, Radiation, Emission

A

B) Conduction, Convection, Radiation

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12
Q

True or False: The larger the RSI value of a material, the better its insulation.

A

True

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13
Q

What is the U value?

A) A measure of the material’s ability to conduct heat
B) A measure of the material’s ability to resist heat transfer
C) The reciprocal of thermal resistance, indicating total energy transfer through a material
D) A measure of the material’s density

A

C) The reciprocal of thermal resistance, indicating total energy transfer through a material

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14
Q

True or False: Metals are poor thermal conductors compared to gases.

A

False

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15
Q

How does reflective foil help in thermal insulation?

A) By increasing conduction
B) By reflecting incident solar radiation and reducing energy transfer by radiation
C) By absorbing heat
D) By allowing air to circulate

A

B) By reflecting incident solar radiation and reducing energy transfer by radiation

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16
Q

What are the considerations for insulation thickness in buildings?

A) RSI value/mm of thickness, weight, transparency
B) Color, resistance to moisture, flexibility
C) RSI value/mm of thickness, resistance to moisture, fire resistance, rigidity or flexibility
D) Weight, transparency, color

A

C) RSI value/mm of thickness, resistance to moisture, fire resistance, rigidity or flexibility

17
Q

True or False: Thermal protection requirements for winter conditions aim to minimize heat gain from outside temperatures.

A

False

18
Q
A
19
Q

What are the main functions of Exterior Walls?

A

1-Support: Resist + transfer loads
2-Control: Block+Regulate int/ext flows
3-Finish: Aesthetic + Durable
4-Distribution: Utilities

20
Q

What is the key effective performance of the building enclosure?

A

Continuity of the control layers around the exterior

21
Q

What are the components of Rainscreen system?

A

1-water shedding gap
2-drainage gap (air)
3-drainage plane (water control layer)
4-flashing at base (direct water to drain)
5-drain/weep holes/gap (water out)

22
Q

True or False: Fully-adhered membranes are superior to loose-applied membranes.

A

True

23
Q

——— is always part of the continuity of the air barrier system.

A

Glazing

24
Q

Water vapour moves through an assembly by ———

A

Diffusion

25
Q

Define diffusion

A

The movement of water vapour thru an assembly from more to less vapour regions.

26
Q

What is the difference between the Air Barrier and the Vapour Retarder in vapour control?

A

AR: controls moisture driven by air flow
VR: controls moisture driven by diffusion

27
Q

What are Passive House principles?

A

1-Air Tightness
2-No Thermal bridging
3-Good Insulation
4-Hi-performance glazing
5-Heat recovery ventilation

28
Q

True or False: Vapour Retarder is always on the interior side of the envelope.

A

True

29
Q

What causes air movement through wall assemblies?

A

Difference in air pressure between interior and exterior, caused by wind, stack effect, mechanical pressurization.

30
Q

How can we control airflow between the exterior and the interior of a building?

A

By having a continuous air barrier that connects the exterior assemblies (foundation, rules, and look, windows, doors)

31
Q

Why is it important to have a continuous and effective thermal control layer around the building?

A

-Provide comfort in the interior spaces
-Reduce condensation risk
-Reduce operating energy

32
Q

——— is an area of an assembly where he flows at the much higher rate.

A

Thermal Bridge

33
Q

How can we reduce the risk of thermal bridging?

A

-By having a continuous ext. insulation
-By providing thermal brakes at cladding attachments & window frames
-By insulating structure framing (column, beams, str. walls)

34
Q

True or False: Sufficient exterior insulation does not reduce need for interior air tightness.

A

False: within enough exterior insulation the need for interior air tans is decreased

35
Q

Good exterior insulation reduces the risk of ———- at sheathing and reduces the need for interior air tightness.

A

Condensation

36
Q

Why is Airtightness important?

A

1-Avoid condensation in assemblies
2-Avoid mold growth/ structural damage
3-Min. Heat loss & Sound transmission
4-Improve air quality & comfort
5-Effective Ventilation system

37
Q

True or false: vapour retarders are semi vapour permeable.

A

True, vapour retarders, slow down the diffusion of water vapour through an enclosure assembly.

38
Q

—————- is a material which slows down the diffusion of water vapour through an assembly while ————— is a material that stops the diffusion of water vapour through an assembly.

A

Vapour retarder, vapour barrier

KAA EXAC 2024 (18 decks)

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