CEM Exam Three

A fire door in a 2-hour rated fire wall must have a minimum fire-rating of

1.5 hours.

Fire-resistance rated glazing can provide fire protection for up to

120 minutes

Numeric Performance Grades for wind pressure start at ____ psf and increase in increments of ____ psf.

15 psf and increasing in increments of 5 psf.

A building may lose ____ percent of usable floor space if a double-skin façade is used.

5 to 10

The IBC requires habitable rooms to have at LEAST ____ percent of its floor area comprised of an exterior glass.

8

What is needed between the top of a nonloadbearing partition and the bottom of a structural member?

A slotted deflection track

What is made by grinding and polishing a concrete that consists of marble or granite chips, in a matrix of colored Portland cement? It often features divider strips.

A terrazzo floor

Which is part of a glass-fiber-reinforced concrete (GFRC) curtain wall panel?

A welded frame of steel studs

Flame spread of a surface material is measured using

ASTM E84

Why is cladding used more than precast concrete?

All of the above (Up to 50 percent lighter, Reduce energy demands, Cheaper)

Which is a desirable feature of residential windows?

All of the choices are correct ( All being: Gas fills, Double glazing, Low e-coatings, Tight curtains)

A finished ceiling fulfills what functions?

All of the choices are correct (All being, contains light sources, helps with sound absorption, reflects light)

What should a designer consider when selecting interior finish materials for a building?

All of the choices are correct (All being: Combustibility and fire resistance, Acoustic criteria, Potential for toxic emissions, Cost)

Why have dry systems replaced wet systems in interior finishing?

All of the choices are correct. (All being: They do not require as much specialized skills., They are faster., They are less dependent on weather.)

When steel stud backup systems are used, what should be sized conservatively to ensure the veneer is protected from wind stress?

All of the choices are correct. (Metal framing, Masonry ties, Fasteners)

An architect consults with whom when designing a new metal cladding system?

All of the choices are correct. (all being: cladding expert, the project's structural engineer, the manufacturer)

Which is used MOST frequently as the framing material in glass curtain wall systems?

Aluminum

Which metal is widely used to produce extruded shapes?

Aluminum

Which is NOT a current-construction potential health risk?

Asbestos in plaster

Which type of EIFS installation relies only on coating layers and joint sealants to protect it from water penetration?

Barrier-wall

What separates a concrete wall and gypsum board to avoid mold?

Both plastic foam insulation and z-furring channels

How are the glass panels shown in the photo MOST likely supported?

By rods or cables attached to the four-point spider fitting.

Which of these window types swings outward to open?

Casement

Because it is less expensive, what can be used in place of a cement plaster base coat?

Cementitious backer board

What type of glass was originally produced in Venice as early as the 900s?

Crown

What is the one type of glass that is an exception to the tempered glass codes according to the IRC?

Dalle glass

Which is the normal sequence of interior finishing operations?

Dropped ceiling wires before fire safing before flooring

Because EIFS can only be employed with prefabricated masonry, it is typically used only in single-family home construction.

False

Brick veneer cladding is BEST suited to rainscreen design because they are manufactured in factory-controlled environments, making them more durable.

False

Laminated plastic is the only material that can be used without any restrictions.

False

Reinforced prefabricated brick panels should never be used as a curtain wall.

False

The glass in buildings within hurricane zones is expected to withstand wind loads but CANNOT be expected to resist objects blown against it by those strong winds.

False

Veneer plaster was the MOST commonly used ceiling and wall finish prior to World War II.

False

Where accessibility is a concern, the knob is the crucial piece of door hardware.

False

Wood wall paneling provides sufficient fire resistance in an interior room.

False

Which of these can extend from the top of one floor to the underside of the suspended ceiling above?

Fire partition

All shafts are eventually enclosed with what?

Fire-resistive walls

Which glass manufacturing process has become the world-wide standard?

Float glass process

Which type of interior door is best suited to a high-traffic area, where "abuse" of the door is a high probability?

Flush solid core

Where would you use Type X gypsum board?

For fire-rated walls

In an inside-glazed curtain wall system, which gets installed last?

Gaskets

Airtight Drywall Approach (ADA)

Gypsum wallboard panels used to finish the interiors, walls, and ceilings to create an air barrier.

_____________ is produced by reheated annealed glass in an oven to approximately 1150 degrees Fahrenheit and then _________ both of its surfaces rapidly with blasts of air while its core cools much more slowly.

Heated- treated glass, quenching

Where would you install a smoke barrier?

In hospitals or prisons.

Where is fireblocking or draftstopping NOT required?

In the middle of a 9-foot-tall wall

Which type of metal panel cladding can be used with either barrier-wall or rain screening systems?

Insulated metal panels

A prefabricated brick curtain wall needs what for its own stability?

Internal brick reinforcement

What is the main benefit of using engineered wood flooring?

It is dimensionally stable.

Why is the first plaster coat called a scratch coat?

It is roughened immediately after application.

Poured underlayment does NOT provide which benefit?

It makes the floor stiffer and stronger.

An NFRC label on a window that shows a SHGC of 0.3 describes what?

Its solar transmittance

Gypsum board walls that require the minimum finish for fire performance are typically finished how?

Joints are taped in compound but not sanded.

________ is made by the bonding a transparent polyvinyl butyrl interlayer between sheets of glass. It provides safety against falling shards in an overhead glazing installations.

Laminated glass

the paint with the easiest and least costly cleanup is ___ paint.

Latex

Regarding EIFS, which word or phrase does NOT belong with the others?

Lockstrip gasket

What is cons comes with the double skin facades?

Lose 5-10% of usable floor area in the building.

Double-glazed windows often include which glass for improving their thermal performance?

Low-e glass

Which word or phrase does NOT belong with the others?

Low-emissivity coating

Vapor Barrier

Material placed on the warm side of thermal insulation to prevent water vapor from diffusing into the insulation where it could condense into liquid.

Which floor is more slip resistant?

One with a COF of 0.9

In case of emergency conditions, what do the doors of industrial buildings have to have?

Panic hardware

What type of glass was produced to make the mirrors favored by European nobility?

Plate

Which material is typically NOT part of an EIFS system?

Posttensioning tendons

Which is NOT an example of resilient flooring?

Quarry tile

Which word or phrase does NOT belong with the others?

Rafter

Which is NOT a frame material for windows?

Silicone

The three types of doors are:

Solid-core door, Panel door, Hollow-core door

Windows facing which direction allow the entry of solar heat in a building in winter?

South

What is the function of the horizontal aluminum member shown in the image?

Structural support

How is stucco different from gypsum plaster?

Stucco shrinks during hardening; gypsum plaster expands.

Which type of glass is MOST often used in and around exterior doors where pedestrian traffic is heavy?

Tempered

__________ has a higher residual stresses than heat-strengthened glass and is about four times as strong in bending as annealed glass. It is usually used for strength and breakage safety in both doors and windows of stores and hockey rink enclosures.

Tempered glass

Whose responsibility is it to work out any level adjustments to the flooring?

The architect

In winter, you notice condensation water at the edges of an otherwise dry window. What is the main cause of this?

The double-pane glass uses aluminum spacers.

Once a new curtain wall is manufactured, who typically undertakes its installation?

The manufacturer or its subcontractor

Radiant Barriers

Thin sheets or panels faced with a bright metal foil that blocks that transmission of infrared radiation

What must be applied in wet locations to prevent moisture from seeping through tiles to the wall behind it?

Tile waterproofing membrane

What is the primary function of the steel angle in cloud #2 highlighted in the sketch?

To brace the stone wall panel against tilting

A barrier-wall design may be the MOST cost-efficient system when intricate flashing and drainage systems are needed to properly install prefabricated panels on the exterior of a building.

True

Because electric light is one of the biggest consumers of a building's energy, architects use computer modeling to design spaces to optimize natural daylight.

True

Class PB EIFS is the MOST commonly used version in the United States.

True

Commercial floor finishes include concrete, carpet, resilient and ceramic tile, hardwood, and raised floor systems.

True

Demountable wall sections are installed after all other wall, floor, and ceiling finishes are in place.

True

The type of glass used in a sloped glazing system is restricted if the slope is more than 15 degrees from vertical.

True

Which of these fluid-applied flooring options cures the fastest?

UV-curable coatings

Which insulation material does NOT also provide a vapor retarder?

Unfaced glass fiber batts

Which material has the highest coefficient of thermal expansion?

Vinyl

Where would you find a lath?

When applying plaster

Interstitial ceilings are useful where

a large number of building systems must be installed.

The fat arrow in the sketch points to

a mullion.

Double-skin facades do NOT allow for

a possible reduction in construction costs.

Building services (e.g., piping and wiring) are typically hidden

above a suspended ceiling.

Suspended ceilings can be made of

all of the choices are correct. (All being; wood panels, fabric-wrapped panels, metal panels, only gypsum board.)

Gypsum wallboard (drywall) is a common wall finish because it

all of the choices are correct. (all being: is cheaper than three-coat gypsum. Can be applied by less-skilled works. Provides fire protection.)

Sloped glazing systems often feature

an internal drainage system.

Masonry veneer curtain walls

are supported from below.

Firestopping and safing must be installed floor perimeters

at pipe penetrations through floors and fire walls, and at electrical penetrations through floors and fire walls.

Which is NOT directly associated with finish carpentry on stairs?

blocking

when framing is too irregular or too far apart to fasten finish materials to it, what components are attached to the framing so as it provide a uniform assembly to which the finish materials can be attached?

bracing

Finish floors are NOT related to

building insulation.

Anodizing aluminum means

building up a strong oxide coating using an electrolytic process.

Precast concrete curtain wall panels

can be made with a variety of surface finishes.

Windows that have sashes

can open up to 50 percent of their size.

Masonry partitions nowadays are MOST likely made of

concrete masonry unit (CMU).

Omitting a vapor retarder in a wall assembly can lead to

condensation of water inside the wall cavity.

Exposed mechanical systems (e.g., ducts) lead to

cost savings because of the omitted ceiling.

On the upper stories of a high-rise building, you would more likely find an aluminum

curtain wall.

Casings are MOST closely associated with

doors and windows.

A shaft wall

encloses stairs or elevators. Enclose vertical openings that extend through multiple floors of a building, such as elevators, exit stairs, or vertical runs of ductwork, conduits, or pipes.

Screw ports/slots are used in

extruded aluminum window components.

Underlayment panels are associated with

finish flooring

The component in the red oval in the sketch is

fire safing.

You have enough space for a full door swing and would like to let light through the closed door. Therefore, your choice of door is a

glazed swinging.

Large-lite glazing requires consideration of all EXCEPT

glazing must always be vacuum-insulated.

The sketch shows different methods of supporting acoustical ceiling panels (or tiles). The member(s) that collectively support(s) the panels is (are) called

grid

Stone panels mounted on a steel frame are called

grid-system-supported stone cladding.

A lather is a tradesperson who works with

gypsum-based partitions.

In interior millwork intended for transparent coatings such as varnish or shellac is typically made from this type of wood ___

high-quality

Laminated glass CANNOT be used for

improving thermal insulation

Floor finish information, such as quality of carpet and tile would be most likely found ______________.

in the specifications

Ceramic tile facings are often added to walls for all of the following reasons EXCEPT to

increase the wall's resistance to horizontal loads.

In a building with a low air-infiltration rate, it is generally best practice to

install a heat-recovery ventilation system.

Blown-in cellulose insulation is a good insulation material because it

is low in cost and has a good R-value.

Aluminum is the "metal of choice" for curtain wall systems for all of the reasons below EXCEPT

it is a good insulator.

The presence of icicles hanging off the eaves of a wood-framed structure is MOST likely due to

lack of proper roof ventilation.

Blast-resistant glazing is achieved by

laminating panes of glass.

A flush steel door is

made corrosion-resistant by galvanizing.

Fire walls

must extend beyond the roof if the roof structure is combustible. Wall that forms a required separation to restrict the spread of fire through a building, and extends a continuously from the foundation to or through the roof.

The Kawneer 1600 System1 is an example of a/an

outside-glazed curtain wall system.

Important considerations for metal panel cladding are

seam arrangement and material texture.

You get the traditional stile-and-rail look for a door if you order a

six-panel door.

Window size is

smaller than rought opening size.

The clouded component in the sketch is a

thermal break.

Gypsum board attached to the underside of floor joists is considered a/an

tightly attached ceiling.

Server rooms, with their high amount of electrical wiring and need for flexible arrangements, typically put wires

under raised flooring.

Crowns, coves, casings, and chair rails are all associated with

wood interior trim work.

A gypsum or cement underlayment must have a minimum thickness of ___ inch(es).

¾ (19mm)

Brick or stone flooring is likely to have at LEAST ___ inch(es) difference in thickness than other types of flooring materials.

⅛ inch (3 mm)