Chapter 13, 14, 15, 16, 19, 20, 21, 22, 23, 24 Practice Questions

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Formwork must remain in place until the concrete has reached its design strength.

False

High-range joint sealants can sustain elongations of up to plus or minus 100‑200% of the joint width.

False

In an economical concrete structure, as the span of a concrete slab increases, the slab thickness decreases and the slab reinforcing increases.

False

Insulating concrete wall forms are removed from the outside face of the wall once the concrete has cured.

False

It is impractical to attempt to achieve a super-flat floor in concrete construction.

False

Low-slope roofs have a slope of less than 3 inches in one foot (3:12).

False

On a pound-for-pound basis, precast concrete uses less embodied energy than conventional concrete construction.

False

Precast concrete elements are usually air-cured.

False

A steel stud backup wall is usually stiffer than a masonry backup wall.

False

Aluminum curtain wall systems are typically stick systems.

False

Because raised access floors contain electrical wiring, they cannot be used as an air plenum.

False

Concealed spaces in walls of wood frame construction cannot exceed 8 feet high or wide without the addition of fireblocking.

False

Concrete formwork constitutes only a small portion of the overall cost of the concrete building frame, often less than 40%.

False

Concrete reaches its design strength after 7 days of cure

False

Curtain wall systems must be glazed from the outside.

False

Due to their impact resistance, EIFS lends itself well to ground-level wall cladding.

False

Finish floor systems are typically specified in MasterFormat Division 10.

False

Fire partitions must extend from foundation to roof.

False

Fire walls must be framed with noncombustible materials.

False

For interior floor slabs, a vapor retarder or moisture barrier is placed under a bed of crushed stone.

False

Partitions in buildings of Type I and II construction may be constructed of wood.

False

Precast concrete slabs are typically supported by steel beams.

False

Precast elements are structurally sound and do not require any temporary supports during erection.

False

Prefabricated EIFS panels are commonly used in lieu of in-place construction in most cases for multistory exterior applications.

False

Reinforcing steel in concrete beams is typically located at the top of the beam.

False

STC values of a partition are designed for partitions to stop at a suspended ceiling system.

False

Shingles are commonly used on low-slope roofs.

False

Standard sealant joints are 1/8 inch to 1 inch.

False

Stick systems are typically suited to high-rise buildings.

False

The faster concrete dries, the stronger it will be

False

The last major finishing operation is finish painting.

False

The most commonly used built-up roof (BUR) system uses a cold-applied mastic application between multiple roofing plies.

False

The smaller the width of a sealant joint, the greater its resistance to air and moisture penetration becomes.

False

Type II cement is the cement type most commonly used for normal concrete construction.

False

White EPDM has the highest solar reflective index (SRI)

False

Interior finishes must not only comply with flame-spread ratings, but also smoke-developed ratings.

True

Interior roof insulation is required to have an airspace between the insulation and the deck.

True

Interstitial ceilings that have enough headroom and strength for workers to walk on are commonly used in hospitals.

True

Metal stud partitions are permitted by the IBC in wood frame construction.

True

Precast concrete slabs in most applications are cast with a rough top surface, requiring a topping slab to be field placed.

True

Precast concrete structural elements are commonly connected using bolted or welded connections.

True

Prefabricated reinforced brick wall panels can be attached to the structural frame without a structural backup wall being required.

True

Pressure-equalization wall design is based on the concept of recognizing that water gets into the building envelope and is dealt with in the space between the inside and outside.

True

Silicones are generally considered the longest-lasting and highest-performing sealant.

True

Single-ply roof membranes are the most widely used material in North America for low-slope roofs.

True

Slab on grade is concrete construction that uses the ground as the bottom formwork

True

Smoke—not heat or flames—is the primary killer in building fires.

True

Steel reinforcing bars projecting vertically from footings are called dowels.

True

Steel reinforcing is added to concrete to improve its tensile strength.

True

The basic use of formwork in concrete construction is to control the concrete.

True

The exterior wall enclosure is often referred to as the building envelope.

True

The space between a suspended ceiling and the structure is known as a plenum.

True

The speed of precast concrete construction exceeds that of conventional concrete construction.

True

The structural strength of concrete is largely due to the aggregates used.

True

Wind is the most difficult environmental condition that buildings must resist.

True

Most brick-faced buildings are built using brick as a veneer.

True

Perforated gypsum board has largely replaced metal lath for interior plaster applications.

True

Precast concrete construction is fundamentally a field assembly process and less a construction process.

True

Precast concrete elements are typically made with a Type III portland cement.

True

The embodied energy of gypsum wallboard is relatively low.

True

A gypsum board ceiling is the most economical acoustical ceiling system.

False

A horizontal expansion joint is normally not required when a steel relief angle is used in a masonry veneer curtain wall.

False

A properly mixed and placed concrete slab on grade will have little chance of cracking.

False

A roof membrane by its nature acts as a vapor retarder, and therefore a separate vapor retarder is not required below the roof membrane.

False

A #6 steel reinforcing bar is ¾ inch in diameter.

True

A brick curtain wall will fail without the use of periodic steel relief angles.

True

A fire wall can divide a single building into separate smaller buildings for the purpose of calculating allowable heights and areas under the building code.

True

A masonry backup wall is usually preferred to other forms of backup walls.

True

Gypsum board thicknesses range from ¼ inch to 1 inch.

True

A multistory opening through a building is considered a shaft and must be of a minimum rated construction.

True

A pressure differential can draw water into a wall penetration.

True

All building envelopes must be designed and constructed with some form of internal moisture drainage.

True

Aluminum is one of the most energy-intensive materials used in construction.

True

As a general rule, when vapor retarders are required in cold climates, they should be located on the warm, heated side of the insulation.

True

As a general rule, when vapor retarders are required in humid climates where cooling dominates, they should be located toward the exterior side of the insulation.

True

Attachments for prefabricated cladding panels must compensate for structural movement.

True

Building codes require a roof slope to be, at a minimum, ¼ inch per foot of run.

True

Caulk joints would be expected to fail if a ¼-inch-wide joint were to expand by 1/16 of an inch.

True

Common reinforcing in concrete slab on grade is a welded wire fabric.

True

Concrete is referenced in CSI MasterFormat Division 03.

True

Dry-packing of steel connections exposed to weather is required in precast concrete construction.

True

External gaskets are a deterrent seal only and other means must be incorporated during design to drain moisture to the outside of the building

True

Firestopping is a critical operation and involves sealing all penetrations, including around pipes, through fire-rated assemblies.

True

Given proper gradation of aggregates, the strength of concrete is primarily dependent on its water-to-cement ratio.

True

Glass-fiber-reinforced concrete curtain wall cladding has several advantages over conventional precast concrete panels.

True


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