Question 1

In a brick veneer assembly with a steel stud backup wall, the design of studs is generally governed by

Accepted Answer

The design of studs in a brick veneer assembly with a steel stud backup wall is generally governed by the deflection of studs to withstand lateral loads, as excessive deflection can cause cracking or failure in the veneer.

Question 2

The GFRC skin is typically

Accepted Answer

GFRC (Glass Fiber Reinforced Concrete) skin is typically 1/2 inch to 3/4 inch thick. This relatively thin profile is due to the strength provided by the glass fibers, allowing for lighter and more versatile architectural elements.

Question 3

A GFRC curtain wall panel consists of

Accepted Answer

GFRC (Glass Fiber Reinforced Concrete) curtain wall panels typically consist of a cold-formed steel frame, a GFRC skin, and anchors to secure the panel to the building structure, making all of the above components part of their construction.

Question 4

The glass fibers used in the GFRC skin are referred to as AR fibers. The term AR is an acronym for

Accepted Answer

AR fibers stand for alkali resistant fibers, which are essential in GFRC (glass fiber reinforced concrete) as they prevent the deterioration of the glass fibers when they come in contact with the alkaline environment of the concrete.

Question 5

The bricks used in brick- faced concrete curtain wall panels are generally

Accepted Answer

The bricks used in brick-faced concrete curtain wall panels are generally thinner than those used in brick veneer construction, as the purpose of the curtain wall is to provide a decorative or protective façade and not to bear the weight of the building. Thinner bricks also help to reduce the weight of the panel, making it easier to handle and install.

Question 6

The GFRC skin is obtained by

Accepted Answer

The answer of The GFRC skin is obtained by
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Question 7

The structural design of precast concrete curtain wall panels is generally the responsibility of the

Accepted Answer

The structural design of precast concrete curtain wall panels is typically the responsibility of the structural engineer retained by the panel fabricator, as they have the expertise and specific knowledge required for designing these panels.

Question 8

The anchors used in GFRC panels are typically

Accepted Answer

One-piece anchors are typically used in GFRC panels, regardless of thickness or lateral loads. This is because GFRC panels are relatively lightweight and do not impose significant loads on the anchors. One-piece anchors simplify the installation process and reduce the likelihood of failure due to the separation of components.

Question 9

GFRC curtain wall panels are generally lighter than the corresponding precast concrete curtain wall panels.

Accepted Answer

GFRC (glass fiber reinforced concrete) is a lighter material compared to traditional precast concrete, which makes GFRC curtain wall panels lighter than precast concrete curtain wall panels.

Question 10

The veneer in a brick veneer wall is anchored to the backup wall with steel anchors, also called ties. What is the structural function of anchors and to which types of stress are they subjected?

Accepted Answer

The answer of The veneer in a brick veneer wall...

Question 11

Precast concrete curtain wall panels are generally

Accepted Answer

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Question 12

During the erection of precast concrete curtain wall panels, the panels are leveled. The leveling of the panels is provided in the

Accepted Answer

The leveling of precast concrete curtain wall panels is typically provided in the panels' bearing supports, which are designed to accommodate adjustments for proper alignment and leveling.

Question 13

Is a brick- veneer wall an anchored- veneer wall or an adhered- veneer wall?

Accepted Answer

The answer of Is a brick- veneer wall an anchored-...

Question 14

The strength of concrete used in precast concrete curtain walls is generally

Accepted Answer

The strength of concrete used in precast concrete curtain walls is generally greater than or equal to 5,000 psi to ensure durability, structural integrity, and resistance to environmental factors.

Question 15

A masonry veneer, such as a brick veneer or CMU veneer, must be provided with a backup wall. Name commonly used alternatives for the backup wall.

Accepted Answer

The answer of A masonry veneer, such as a brick...

Question 16

What is the typical thickness of brick veneer in a brick- veneer wall?

Accepted Answer

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Question 17

The term GFRC is an acronym for

Accepted Answer

GFRC stands for glass fiber-reinforced concrete. The term refers to a mixture of concrete or cement that has been reinforced with alkali-resistant glass fibers. These fibers help to improve the strength and durability of the concrete, while also making it lighter and more flexible. GFRC is used in a wide range of applications, from architectural panels and facades to countertops, sinks, and other decorative elements.

Question 18

The connection between the natural stone facing and the backup concrete in a stone- faced precast concrete curtain wall panel is obtained by

Accepted Answer

Flexible steel dowels are the best choice as they allow for some movement between the natural stone facing and the backup concrete, while still providing a durable and strong connection. The roughness of the stone surface alone may not provide enough anchorage, and nonmoving steel dowels do not allow for movement between the two materials, which can cause cracking or failure.

Question 19

A bond break such as a polyethylene sheet membrane is generally used between the concrete and bricks in a brick- faced precast concrete curtain wall panel.

Accepted Answer

The answer of A bond break such as a polyethylene...

Question 20

The number of bearing supports in a precast concrete curtain wall panel must be

Accepted Answer

Precast concrete curtain wall panels typically require two bearing supports to ensure stability and proper load distribution.

Quiz 28: Exterior Wall Cladding-II Masonry, Precast Concrete, and Gfrc