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BTECH MIDTERM > Window Wall > Flashcards

Window Wall Flashcards

1
Q

comprises one of the element of facade technology in high rise building

A

Curtain wall system

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2
Q

involves window wall, cladding elements, and curtain walls which generates the exterior of the building

A

Facade

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3
Q

Facade involves

A

Window wall
cladding elements
Curtain walls

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4
Q

Now possess structural importance equivalent to that gained by other structural elements of the building

A

Curtain wall system

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5
Q

is a fundamental function of a facade

A

Water penetration

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6
Q

This function is more of an environment concern to reduce emission of carbon dioxide due to rate of heat loss or gain

A

Air impermeability

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7
Q

Wind actions are transferred by the cladding system to the building act as a

A

Linear support

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8
Q

necessary between the inside and the outside environment mainly city centered building

A

Acoustic insulation

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9
Q

Strictly necessary for a facade in order to reduce energy consumption and co2 emissions

A

Thermal insulation function

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10
Q

where complete defense of water is conducted

A

Primary level

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11
Q

Where a direction to let percolated water to drained out has to be provided

A

Secondary level

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12
Q

are transferred by cladding system to the building floors which act as a linear support

A

Wind actions

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13
Q

This can be reduced by providing selective solar control coating on one of the surface of the glass

A

Solar levels

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14
Q

This coating is called —— because solar radiation of different wavelengths is selectively allowed to pass through the coating

A

selective

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15
Q

are factory pre casted systems

A

Curtain wall system

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16
Q

Functions of curtain walls in buildings

A

Elimination of water penetration
Air impermeability
Resistance to wind, thermal and acoustic action
Solar level

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17
Q

Two types of curtain wall system

A

Stick curtain wall system
Unitized curtain wall system

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18
Q

Involves its component to be assembled piece by piece on the building at the site

A

Stick curtain wall system

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19
Q

Stick curtain wall are mainly installed in

A

Low rise building or small regions

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20
Q

mainly installed in low rise building or small regions

A

Stick curtain wall system

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21
Q

gains the advantage of low shipping cost as onsite adjustments are possible

A

stick curtain wall system

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22
Q

Involves assembling by means of interlocking units that are bought from the factory

A

Unitize curtain wall system

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23
Q

This system is mainly used in high rise building

A

Unitize curtain wall system

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24
Q

Components of a curtain wall

A

Transom
Mullions
Vision glass
Anchor

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25
Q

Horizontal members on the curtain wall panel

A

Transom

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26
Q

Vertical rails

A

Mullions

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27
Q

Is identified by the split mullions and the transforms that are evident in the panel perimeters

A

Unitized system

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28
Q

mainly deals with the issue of water permeability

A

Weather tightness

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29
Q

In order to avoid weather tightness ____ are employed

A

impermeable insulating units (glazed units)

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30
Q

Most of the support are held at the

A

Edge beams

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31
Q

Would prevent damage to the curtain wall and cladding system particularly when it is highly glazed

A

Proper edge beam provision

32
Q

Can be provided so that they can span between the perimeter columns

A

Alternative steel strong backs

33
Q

The strong backs are mainly

A

Hot rolled sections

34
Q

Are considered structural elements of a building

A

Curtain walls

35
Q

Are commonly used methods of exterior cladding for mid-rise and high-rise buildings

A

Curtain wall and window wall

36
Q

Spans only a a single floor, is supported by the slab below and above, and is therefore installed within the slab edge

A

Window wall system

37
Q

Is a structurally independent/self supporting system, typically spanning multiple stories, and is installed proud of/ beyond the slab edge

A

Curtain wall

38
Q

This systems inherently act as the primary air/vapor/ weather - resistive barrier for the building envelope

A

Enclosure/Barrier

39
Q

Beyond clear glass, these systems can incorporate panels of metal, stone, opaque glass, etc.

A

Cladding

40
Q

While they do not have the same insulation value as a solid or framed wall, these systems do provide some degree of insulation value

A

Insulation

41
Q

While these are not bearing walls, they transfer their loads to the main building structure, and need to be designed to resist wind and other lateral loads

A

Structural

42
Q

Two main types of curtain wall systems

A

Stick-built
Unitized

43
Q

Arrives at the site as a kit of parts

A

Stick-built

44
Q

Arrives at the job site in prefabricated panels

A

Unitized

45
Q

The metal extrusion between glazing panels that supports the system

A

Mullion

46
Q

A metal plate secured to the mullion to retain the glass in place, typically 2 or more inches wide

A

Pressure plate

47
Q

To give more minimal appearance

A

Structural silicone

48
Q

Two or more panes of glass separated by a spacer and filled with an inert gas

A

Insulated glazing unit (IGU)

49
Q

Often referred to as double-glazed or double-pane

A

Insulated glazing unit (IGU)

50
Q

The component that separates the glass panes at the edge of the IGU.

A

Spacer

51
Q

It often includes a desiccant material to absorb moisture.

A

Spacer

52
Q

used to separate IGU edge from the mullion/frame at the perimeter

A

Setting blocks

53
Q

Extruded rubber used as a glazing seal between the IGU and mullion.

A

Gasket

54
Q

They are compressed into a joint between frame and window at both the exterior and interior.

A

Gaskets

55
Q

In lieu of gaskets, field-applied wet sealant can be installed between the IGU and mullion.

A

Wet seals

56
Q

Are typically silicone applied over a backer rod or glazing tape

A

Wet seals

57
Q

These are glass panels that do not move

A

Fixed glazing

58
Q

These are hinged or sliding glazed panels that allow for the introduction of fresh air into the building

A

Operable panel/vent

59
Q

These require specialized hardware and a “frame within a frame” to hold the glazing in place

A

Operable panel/vent

60
Q

As opposed to vision glass, a ___ is an opaque panel of either obscured coated glass or another material

A

Spandrel panel

61
Q

They are typically used to conceal structural elements or interstitial space.

A

Spandrel panel

62
Q

There is often a ____ or ____ behind the panel to hold/ conceal insulation to improve the thermal performance of the overall system

A

Shadow box or backpan

63
Q

A panel that incorporates louvers for the operation of mechanical units.

A

Louvered panel

64
Q

Should be integrated with a sleeve to allow for protection from water infiltration and allows for drainage to the exterior

A

Louvered panel

65
Q

ties the curtain wall to the slab edges or structural frame

A

Anchor

66
Q

Can be embedded when the slab is poured or fastened to slab after the slab is in place

A

Anchor

67
Q

Often a C-shaped channel design to accept the sill, jamb, and head of the overall frame to hold the system in place

A

Receptor

68
Q

Separates exterior metal mullion components from interior metal mullion components

A

Thermal break

69
Q

It reduces the thermal conduction through frame/ mullions by making the metal discontinuous.

A

Thermal break

70
Q

This may be a result of inadequate design for anticipated loads, inadequate design for deflection, improper or insufficient anchoring

A

Structural failure

71
Q

This may be a result of defects inherent to the window system itself ; penetrations in the system; interfaces with adjacent building systems

A

Water or air infiltration

72
Q

This may be caused by physical impact either during construction or post-construction ; weakening of the glass

A

Glass breakage

73
Q

This is a result of condensation occurring between the panes of glass, which is caused by a failure in the seal at the spacer of the IGU

A

Fogging of IGUs

74
Q

This is a result of the surface temperature of the interior frame and/or glass dropping below the dew point.

A

Indoor condensation

75
Q

Typical failures

A
  • structural failure
  • water/ air infiltration
    -glass breakage
    -fogging of IGUs
    -indoor condensation
76
Q

In ____ forensic investigations, we have encountered a variety of ways in which curtain wall and window wall systems can fail.

A

Vertex

BTECH MIDTERM (5 decks)

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