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