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Byggteknik AF2401 > The building envelope > Flashcards

The building envelope Flashcards

1
Q

Which are the four control layers and
which processes are they supposed to deal with?

A

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2
Q

Is it a distinction between damp and water? Explain!

A

Damp is not yet saturated water, but still wet

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3
Q

Pressure differences over the building envelope. What is meant by the “stack effect”?

A

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4
Q

What is the driver for the air movement, and which is the direction?

A

Density: Hot air rises upwards due to its lower density.
Pressure: Hot air expands, creating pressure. Then flows towards cold side of space (Due to sun on one side)

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5
Q

What is meant by driving rain?

A

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6
Q

How is a building influenced by driving rain?

A

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7
Q

What is meant by a cavity wall?
Give examples on different types of drained-screened wall systems.

A

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8
Q

Explain about the control layers in a wall of this kind.

A
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9
Q

In a cavity wall – how is drying made possible?

A
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10
Q

What is the meaning of having a cavity tray (or water diverter) in a cavity wall?

A
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11
Q

Can something be explained about the critical parts in the assembly (or excecution) of a high
performance filled cavity wall?

A
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12
Q

Why is it so important to avoid air movements around the thermal insulation boards in a cavity
wall?

A
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13
Q

About the mass storage wall systems
What kind of rain protection will they give?

A
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14
Q

About the mass storage wall systems
Give some examples

A
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15
Q

About the mass storage wall systems
Where can we find the control layers in this kind of walls?

A
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16
Q

About the mass storage wall systems
What is meant by “dry stone walls”?

A
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17
Q

What tells the example of the brick wall with different kinds of thermal insulation on the inner
side about the process of moistening and drying of a compact brick wall?

A
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18
Q

In the example of water absorption of a brick and a concrete wall, what are the consequences of
water absorption and what are the consequences of high run off?

A
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19
Q

Water in the ground
Explain about a damp-proof course in a basement.

A
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20
Q

Water in the ground
Explain different levels of water in the ground and is the type of soil important in this case?

A
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21
Q

Water in the ground
What is capillary action and where does it happen?

A
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22
Q

Water in the ground
What is rising damp and how does the transport of salt by rising damp work?

A
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23
Q

Water in the ground
How can effloresce of salt happen and how is the visibility of it related to the relative humidity?

A
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24
Q

Water in the ground
What is frost erosion and what is it’s mechanism?

A
25
Q

Water in the ground
What is spalling?

A
26
Q

Water in the ground
How can we hinder capillary moisture transport in a basement wall?

A
27
Q

How can we understand the temperatures in the ground in winter and summer solstice
respectively?

A
28
Q

What is the problem with frozen soil and why does it happen and how can problems be avoided?

A
29
Q

When temperature is measured deeper and deeper in the ground, how will it vary, and what temperature is expected 20 meters down in the ground?

A
30
Q

Explain the idea with the crawl space foundation, or what is meant by a crawl space foundation?

A
31
Q

What is meant by a slab on ground foundation?

A
32
Q

How can a heating system be incorporated in the ground slab?

A
33
Q

What is meant by a basement foundation?

A
34
Q

Explain about moisture protection in a basement.

A
35
Q

Explain about thermal insulation of a basement wall.

A
36
Q

Explain about different ways for damp or water to pass the air gap in a cavity wall:
What happens when a thermal insulation material becomes damp?

A
37
Q

Explain about different ways for damp or water to pass the air gap in a cavity wall:
Water that flows on the inner of the outer leaf and rises at the inner leaf

A
38
Q

Explain about different ways for damp or water to pass the air gap in a cavity wall:
The possible problem with wall ties.

A
39
Q

Explain about different ways for damp or water to pass the air gap in a cavity wall:
Problems with gaps in the thermal insulation

A
40
Q

Explain about different ways for damp or water to pass the air gap in a cavity wall:
What may be the problem with indoor air reaching the gap in the cavity wall?

A
41
Q

Explain about different ways for damp or water to pass the air gap in a cavity wall:
What is the problem with “air washing” round the batts of thermal insulation?

A
42
Q

Explain about different ways for damp or water to pass the air gap in a cavity wall:
The summer damp case.

A
43
Q

What is meant by perfect wall barrier systems?

A
44
Q

EIFS or ETICS – what is that and what happens in case water enters the inner of a wall of this type?

A
45
Q

Explain differences in placing the vapor membrane depending on the climate.

A
46
Q

What can we make out of looking at comfort zones in summer and winter and combining them with areas of moisture and temperature outdoors, and putting them into a mollier-diagram?

A
47
Q

Explain design of a wall to window connection in different climates.
Where should the control layers be?

A
48
Q

Explain about why the line for the break of a thermal bridge should be quite straight through the construction.

A
49
Q

How is a joint seal designed?

A
50
Q

What determines the ideal width of a joint seal between two concrete elements in a wall?

A
51
Q

Why is it good having a threshold in a horizontal joint?

A
52
Q

How can a horizontal joint be drained?

A
53
Q

How is the joint between a window frame and a wall designed?

A
54
Q

Explain about damage in joints.

A
55
Q

What is the difference between a one step-joint and a two step-joint?

A
56
Q

How are joints assembled in a floor and why is it done in that way?

A
57
Q

It is worth thinking about the different weather barrier concepts.

A
58
Q

Explain “the weather barrier concepts”

A

Byggteknik AF2401 (2 decks)

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