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

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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?

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Question 1

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One dead load anchor in the middle of the mullion and two tiebacks at each end of a mullion.

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?

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Question 2

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The glass is held in position temporarily by small- piece pressure plates. After several glass panes are in position, the small pressure plates are removed and full- length pressure plates are screw- fastened into position.

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 3

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The glass is held in position through structural silicone sealant (see page 831 of the Text).

In a stick- built glass curtain wall, the rails are typically spaced at

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Question 4

List the major differences between a glass curtain wall and a storefront.

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Question 5

A typical glass curtain wall is provided with weep holes to drain infiltrating water even though it is sealed from both the inside and the outside with gaskets or tapes.

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Question 6

In a single- span mullion system for a glass curtain wall,

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Question 7

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

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Question 8

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?

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Question 9

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 10

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?

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Question 11

Using sketches and notes, explain the differences between a single- span mullion support system and a twin- span mullion support system for a glass curtain wall.

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Question 12

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.

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Question 13

The air infiltration rate through a glass curtain wall is specified in terms of

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Question 14

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.

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Question 15

Using sketches and notes, explain how we increase the lateral load- bearing capacity of a standard glass- aluminum wall.

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Question 16

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?

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Question 17

Glass curtain walls in which aluminum framing sections are specially profiled for a particular project are

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Question 18

The underlying sketch shows a detailed vertical section through a pressure- plate captured glass- aluminum curtain wall. Identify the fire containment assembly in the sketch, its purpose and what it consists of.

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Question 19

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?

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Question 20

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

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 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.

In a stick- built glass curtain wall, the rails are typically spaced at

List the major differences between a glass curtain wall and a storefront.

A typical glass curtain wall is provided with weep holes to drain infiltrating water even though it is sealed from both the inside and the outside with gaskets or tapes.

In a single- span mullion system for a glass curtain wall,

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

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 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?

Using sketches and notes, explain the differences between a single- span mullion support system and a twin- span mullion support system for a glass curtain wall.

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.

The air infiltration rate through a glass curtain wall is specified in terms of

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.

Using sketches and notes, explain how we increase the lateral load- bearing capacity of a standard glass- aluminum wall.

Glass curtain walls in which aluminum framing sections are specially profiled for a particular project are

The underlying sketch shows a detailed vertical section through a pressure- plate captured glass- aluminum curtain wall. Identify the fire containment assembly in the sketch, its purpose and what it consists of.

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?

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