Deck 30: Cladding Systems

Question 1

What are some considerations when choosing joint sealant for a curtain wall?

Answer 1

The choice of joint sealant depends on the materials to be sealed, the function of the joint, and possible changes that may occur in the joints after the sealant has been installed.

Question 2

Define and describe EIFS systems.

Answer 2

​ Modified stucco curtain wall panels are an assembly of materials providing both insulation and a weather tight rain-screen. The system is referred to as an exterior insulation and finish system (EIFS). An EIFS is typically attached to the outside face of exterior walls with adhesive or mechanical fasteners. Most systems begin with a sheathing material over which expanded Polystyrene (EPS) insulation board is secured with special mechanical fasteners. The substrate often uses a board with inorganic glass mat facings, a water-resistant, silicone-treated gypsum core, and an alkali-resistant surface coating. A base coat is troweled over the insulation board; then a reinforcing mesh is embedded into it. A final synthetic plaster finish coat is troweled over the base coat. Some EIFS systems include only the insulation and EIFS coatings. Other types also include plastic edge trim, water-resistive barriers, a drainage cavity, and other accessories.

Question 3

____ sealants can accommodate elongations in the range of 65 to 612.5 percent.

A) Low-performance
B) High-performance
C) Medium-performance
D) Average-performance

Answer 3

C

Question 4

Briefly explain the requirements for connections used to secure a panel to a structural frame.

Question 5

What are preformed cellular tapes?

Question 6

The ____ system of installation uses large, preassembled wall panels.

A) unit-and-mullion
B) unit
C) stick
D) panel

Question 7

____ are preformed solid elastomeric materials designed to fit the configuration of components and panels to be sealed.

A) Cellular tapes
B) Mastics
C) Acrylics
D) Gaskets

Question 8

What are sealants and why are they important in cladding systems?

Question 9

The ____ system of installation uses long spandrel panels that span column covers.

A) unit
B) column-cover-and-spandrel
C) stick
D) panel

Question 10

Point supported glazing systems utilize _________ at discrete locations near the glass edge in place of continuous edge supports.

A) mullions
B) spandrels
C) mechanical anchors
D) ribbons

Question 11

____ curtain walls are widely used because they provide a lightweight exterior wall system of exceptional transparency th at can be rapidly erected.

A) Glass
B) Modified stucco
C) Precast concrete
D) Stone

Question 12

The structural design of cladding must first consider the primary loads generated by ______, or self-weight of the envelope, followed by wind forces.

A) emissivity
B) gravity
C) convective energy
D) seismic forces

Question 13

The ____ principle is a pressure equalization method for cladding systems.

A) rainscreen
B) surface tension
C) capillary action
D) barrier

Question 14

Describe the point supported glazing system and how it is installed.

Question 15

Explain the unitized system installation process.

Question 16

____ curtain walls are an assembly of materials providing both insulation and a weathertight rain-screen.

A) Precast concrete
B) Stone
C) Masonry
D) Modified stucco

Question 17

Masonry curtain walls are usually supported by ____ secured to the structural frame of a building.

A) anchors
B) reinforcing panels
C) steel shelf angles
D) stucco

Question 18

Describe two primary methods used to attach stone veneer to a building's exterior.

Question 19

Explain masonry curtain wall backup walls.

Question 20

What are structural glazing systems designed to do?