Question 1

The underlying sketch shows components of a glass- aluminum curtain wall. Using leader lines and labels, ident the following components: (i)vision glass, (ii)spandrel glass, (iii)vertical and horizontal pressure plates, and (iv and horizontal covers. How are the covers anchored to mullions and rails?

Accepted Answer

The answer of The underlying sketch shows components of a...

Question 2

A stick- built glass- aluminum curtain wall system consists of horizontal and vertical framing members. What are they called in curtain wall vocabulary? Are their cross- sectional profiles the same or different?

Accepted Answer

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Question 3

In a cable- net- supported glass wall, the glass

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Question 4

In a stick- built glass curtain wall system, the mullions may span floor to floor (called single- span mullion system)or between two floors (called twin- span mullion system). In the single- span mullion system, each mullion must be anchored to the building's structural frame with two supports, one at each end. What are these supports (anchors)called? Which of these two anchors (supports)is designed to: (i)carry the gravity load of the curtain wall, (ii)accommodate movement in the curtain wall, and (iii)resist the lateral (wind and seismic)load on the curtain wall?

Accepted Answer

The answer of In a stick- built glass curtain wall...

Question 5

The environmental performance requirements for a storefront are generally much higher than those for a glass curtain wall.

Accepted Answer

Storefront systems are typically used for ground-level applications and have less stringent environmental performance requirements compared to glass curtain wall systems, which are designed for use in high-rise buildings and must meet higher standards for wind resistance, thermal performance, and water penetration.

Question 6

In a glass wall supported by cable trusses, the glass

Accepted Answer

In a cable truss system, the glass is typically supported by the tension in the cables rather than being directly connected to mullions or bearing on horizontal rails.

Question 7

A stick- built glass- aluminum curtain wall system consists of mullions and rails. What is the typical center- to- center spacing between mullions?

Accepted Answer

The answer of A stick- built glass- aluminum curtain wall...

Question 8

The underlying sketch shows a typical connection between a mullion and rail in a stick- built curtain wall. Using leader line and label, identify: (i)shear block and (ii)bottom cover of rail. Explain how the bottom cover is attach top part of the rail.

Accepted Answer

The answer of The underlying sketch shows a typical connection...

Question 9

The two most commonly used glass- aluminum curtain wall systems are the stick- built system and the unitized system. Which of these requires less site- installation time and which has lower transportation cost in delivering the system's materials to the site?

Accepted Answer

The answer of The two most commonly used glass- aluminum...

Question 10

Because the glass- aluminum curtain wall is exposed to the outside environment, thermal expansion and contraction must be taken into account in the design of the wall. In a stick- built curtain wall, are the movement joints (called expansion joints)provided in both rails and mullions? If provided in only one of the two members, which one and why?

Accepted Answer

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Question 11

The underlying sketch shows a detailed horizontal section through a curtain wall. Using leader lines and labels, identify various components of the curtain wall. Also explain how the glass is held in position.

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Question 12

A stick- built glass- aluminum curtain wall system consists of horizontal and vertical framing members, called rails and mullions respectively. In anchoring them to the building's structural frame, which of these (rails or mullions)are installed first? Are the members that are installed second also anchored directly to the building's structural frame?

Accepted Answer

The answer of A stick- built glass- aluminum curtain wall...

Question 13

In a stick- built glass curtain wall system, the mullions may span floor to floor (called single- span mullion system)or between two floors (called twin- span mullion system). In the twin- span mullion system, how many dead load support anchors and how many tieback (expansion anchor)supports are provided in each mullion?

Accepted Answer

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Question 14

The two most commonly used glass- aluminum curtain wall systems are the stick- built system and the unitized system. What system is a combination of these two systems?

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Question 15

In connecting the rails to mullions, a shear block is attached to the mullion at each end of the rail. In this connection, is the rail made of one piece or two pieces?

Accepted Answer

The answer of In connecting the rails to mullions, a...

Question 16

A stick- built glass- aluminum curtain wall system consists of mullions and rails. How many rails are used over the height of one floor in a typical office building?

Accepted Answer

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Question 17

The underlying sketch shows two vertical full- length pressure plates and one small piece of pressure plate on the left- hand side of the vertical pressure plate. What is the purpose of the small- piece pressure plate?

Accepted Answer

The answer of The underlying sketch shows two vertical full-...

Question 18

The two most commonly used glass- aluminum curtain wall systems are the stick- built system and the unitized system. Which of these provides greater field adjustment possibilities, required to compensate for minor imperfections in a building's structural framing system?

Accepted Answer

The answer of The two most commonly used glass- aluminum...

Question 19

Expansion joints are provided in the mullions of a glass- aluminum curtain walls. Is the width of these joints determined based only on thermal expansion and contraction of mullions? Explain.

Accepted Answer

The answer of Expansion joints are provided in the mullions...

Question 20

In a stick- built glass curtain wall system, the mullions may span floor to floor (called single- span mullion system)or between two floors (called twin- span mullion system). In the single- span mullion system, each mullion is provided with a dead load anchor and a tieback. In this support system, which anchor (dead load anchor or tieback)is provided at the top of each mullion?

Accepted Answer

The answer of In a stick- built glass curtain wall...

Quiz 32: Exterior Wall Cladding-Iv Wall System in Glass

A stick- built glass- aluminum curtain wall system consists of horizontal and vertical framing members. What are they called in curtain wall vocabulary? Are their cross- sectional profiles the same or different?

In a cable- net- supported glass wall, the glass

The environmental performance requirements for a storefront are generally much higher than those for a glass curtain wall.

In a glass wall supported by cable trusses, the glass

A stick- built glass- aluminum curtain wall system consists of mullions and rails. What is the typical center- to- center spacing between mullions?

The underlying sketch shows a typical connection between a mullion and rail in a stick- built curtain wall. Using leader line and label, identify: (i)shear block and (ii)bottom cover of rail. Explain how the bottom cover is attach top part of the rail.

The two most commonly used glass- aluminum curtain wall systems are the stick- built system and the unitized system. Which of these requires less site- installation time and which has lower transportation cost in delivering the system's materials to the site?

The underlying sketch shows a detailed horizontal section through a curtain wall. Using leader lines and labels, identify various components of the curtain wall. Also explain how the glass is held in position.

The two most commonly used glass- aluminum curtain wall systems are the stick- built system and the unitized system. What system is a combination of these two systems?

In connecting the rails to mullions, a shear block is attached to the mullion at each end of the rail. In this connection, is the rail made of one piece or two pieces?

A stick- built glass- aluminum curtain wall system consists of mullions and rails. How many rails are used over the height of one floor in a typical office building?

The underlying sketch shows two vertical full- length pressure plates and one small piece of pressure plate on the left- hand side of the vertical pressure plate. What is the purpose of the small- piece pressure plate?

The two most commonly used glass- aluminum curtain wall systems are the stick- built system and the unitized system. Which of these provides greater field adjustment possibilities, required to compensate for minor imperfections in a building's structural framing system?

Expansion joints are provided in the mullions of a glass- aluminum curtain walls. Is the width of these joints determined based only on thermal expansion and contraction of mullions? Explain.