NCIDQ - Multiple Choice Review - Ch. 17, 18, 20, 27
This is sample multiple choice questions from Ch. 17,18, 20, 27 of the Ballast textbook (the chapters I was assigned by my study group). I wanted to combine them so they could be shuffled
PRINT BEFORE TAKING THIS TEST - Fill in the blank word bank.
chaseCombustibleconvectorCore drillCore wallsCripple studDeckingFire assemblyFire barrierfire damperFire partitionFire protection ratingFire resistanceFire-resistance ratingFire retardantFlame resistanceFlame retardantFlame spreadFlame-spread indexFlammableGroutHeaderHVACLintelNoncombustiblePurlinSheathingSole PlateStairwayStepTrimTrimmer
Questions and Answers
- 1.
Small ductwork could most easily be placed within which of the following types of structural systems?
- A.
Flat plane concrete
- B.
Beam-and-girder steel
- C.
Twin T concrete
- D.
Open-web steel joists
Correct Answer
A. Flat plane concreteExplanation
Small ductwork could most easily be placed within a flat plane concrete structural system. Flat plane concrete structures provide a solid and stable base for the placement of ductwork. The flat surface allows for easy installation and positioning of the ducts, ensuring efficient airflow and distribution throughout the building. Additionally, concrete structures offer durability and strength, making them suitable for supporting the weight of the ductwork.Rate this question:
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- 2.
A compact filing system is an example of a
- A.
Live load
- B.
Lateral load
- C.
Dead load
- D.
Dynamic load
Correct Answer
A. Live loadExplanation
A compact filing system is considered a live load because it is a movable or temporary load that can change in magnitude and location. Live loads are typically caused by the occupancy or use of a structure and can include people, furniture, equipment, or any other load that is not permanently fixed. In the case of a compact filing system, it can be easily moved or rearranged, making it a live load rather than a dead load which refers to permanent or fixed loads like the weight of the structure itself.Rate this question:
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- 3.
The interior designer can design details to accommodate building movement caused by all of the following EXCEPT
- A.
Wind sway
- B.
Floor deflection
- C.
Building expansion
- D.
Seismic events
Correct Answer
C. Building expansionExplanation
The interior designer can design details to accommodate building movement caused by wind sway, floor deflection, and seismic events. However, they cannot design details to accommodate building expansion. Building expansion refers to the natural expansion and contraction of materials due to temperature changes, which is typically not within the control of the interior designer.Rate this question:
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- 4.
A residential client with a one-story house wants to remove an 8 ft section of a loadbearing wall to make an opening between two existing rooms. What is the most appropriate advice the interior designer can give?
- A.
The opening can be framed with a double 2"x8" header.
- B.
The opening can be framed, but a structural engineer will be needed.
- C.
An architect will have to be retained to sign the drawings for the building department.
- D.
The proposed opening cannot be made, because the wall is a loadbearing wall.
Correct Answer
B. The opening can be framed, but a structural engineer will be needed.Explanation
The most appropriate advice the interior designer can give is that the opening can be framed, but a structural engineer will be needed. This is because removing a loadbearing wall requires careful consideration of the structural integrity of the house. A structural engineer will be able to assess the situation, determine the appropriate size and type of header needed to support the load, and ensure that the structural integrity of the house is maintained.Rate this question:
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- 5.
When advising a client on where to attach fasteners to support wall-hung book shelves in a residence, the interior designer should recommend that they be placed
- A.
Across the double top plate
- B.
24 in on center
- C.
16 in on center
- D.
12 in on center
Correct Answer
C. 16 in on centerExplanation
The correct answer is 16 in on center. Placing the fasteners 16 inches apart on center ensures that they are evenly spaced and provides sufficient support for the wall-hung bookshelves. This spacing allows for stability and prevents the shelves from sagging or falling off the wall.Rate this question:
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- 6.
Core drilling would be most difficult in which type of structural system?
- A.
Post-tensioned concrete
- B.
Flat slab concrete
- C.
Concrete over steel deck
- D.
One-way pan joist concrete
Correct Answer
A. Post-tensioned concreteExplanation
Core drilling is the process of drilling holes in concrete or other materials for various purposes such as installing pipes or cables. Post-tensioned concrete refers to a structural system where high-strength steel cables are tensioned after the concrete has hardened, creating a compressive force to strengthen the structure. This type of system involves the presence of tensioned steel cables within the concrete, making it more difficult to drill through without damaging the cables. Therefore, core drilling would be most difficult in post-tensioned concrete compared to the other structural systems listed.Rate this question:
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- 7.
The structure above a small opening cut in a masonry loadbearing wall would be supported with a
- A.
Header
- B.
Beam
- C.
Lintel
- D.
Trimmer
Correct Answer
C. LintelExplanation
A lintel is a horizontal structural element that supports the load above a small opening in a masonry loadbearing wall. It is typically made of steel, concrete, or wood and is placed across the top of the opening to distribute the weight of the wall above it. Lintels are essential for maintaining the structural integrity of the wall and preventing it from collapsing.Rate this question:
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- 8.
What does the symbol shown indicate on a floor plan?
- A.
Column
- B.
Beam
- C.
Joist
- D.
Truss
Correct Answer
A. ColumnExplanation
The symbol shown on a floor plan indicates a column. A column is a vertical structural element that provides support to the structure above it. It is typically made of materials such as concrete or steel and is used to transfer the weight of the upper floors or roof to the foundation of the building. Columns are an essential part of the structural framework of a building and are represented by specific symbols on floor plans to indicate their location and dimensions.Rate this question:
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- 9.
With whom should the interior designer consult to determine where to put stacks in libraries?
- A.
Mechanical engineer
- B.
Fire protection designer
- C.
Library planner
- D.
Structural engineer
Correct Answer
D. Structural engineerExplanation
The interior designer should consult with a structural engineer to determine where to put stacks in libraries. A structural engineer specializes in designing and analyzing the structural components of a building, including load-bearing walls, columns, and beams. They have the expertise to assess the weight and distribution of the book stacks and ensure that they are placed in areas that can support their weight without compromising the structural integrity of the building. This consultation is important to ensure the safety and stability of the library's structure.Rate this question:
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- 10.
The device that controls the volume of air and its distribution in an HVAC system is called a
- A.
Grille
- B.
Duct
- C.
Register
- D.
Convector
Correct Answer
C. RegisterExplanation
A register is a device that controls the volume of air and its distribution in an HVAC system. It is typically a vent cover with adjustable louvers or dampers that can be opened or closed to regulate the amount of air flowing into a room. Registers are commonly found in homes and buildings and are essential for maintaining proper air circulation and temperature control. They are often located on walls, floors, or ceilings and can be adjusted to direct air in specific directions or areas of a room.Rate this question:
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- 11.
What type of system would be best for an open office plan so the heating and cooling for each workstation could be individually controlled?
- A.
Air-water
- B.
Radiant panel
- C.
All-air
- D.
All-water
Correct Answer
C. All-airExplanation
An all-air system would be best for an open office plan where the heating and cooling for each workstation could be individually controlled. This type of system uses a central air handling unit to distribute conditioned air through a network of ducts. Each workstation can have its own air diffuser or damper, allowing for individual temperature control. This system provides flexibility and efficiency in managing the heating and cooling needs of different workstations in an open office plan.Rate this question:
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- 12.
What is NOT allowed in a return-air plenum?
- A.
Electrical cable
- B.
Water supply pipes
- C.
Wood blocking
- D.
Fire dampers
Correct Answer
C. Wood blockingExplanation
Wood blocking is not allowed in a return-air plenum because it can contribute to the spread of fire. Plenums are spaces used for air circulation in HVAC systems, and they must adhere to strict fire safety regulations. Wood blocking, being a combustible material, poses a fire hazard and can compromise the safety of the plenum. Therefore, it is prohibited to have wood blocking in a return-air plenum to ensure the integrity of the system and prevent the potential spread of fire.Rate this question:
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- 13.
In working with an electrical engineer on a project, what information would the designer most likely put on the interior design power plan?
- A.
Dedicated outlets
- B.
Switch locations
- C.
Speaker locations
- D.
Conduit sizing
Correct Answer
A. Dedicated outletsExplanation
The designer would most likely put information about dedicated outlets on the interior design power plan because electrical engineers need to know where these outlets will be placed in order to properly plan the electrical wiring for the project. Dedicated outlets are specific outlets that are intended for specific equipment or appliances, and their placement is crucial for ensuring that the electrical system can support the power needs of the project.Rate this question:
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- 14.
What type of sprinkler head should be used for a decorative, open-grid, wood-slat ceiling suspended from the structural floor above?
- A.
Upright
- B.
Sidewall
- C.
Pendant
- D.
Recessed
Correct Answer
A. UprightExplanation
An upright sprinkler head should be used for a decorative, open-grid, wood-slat ceiling suspended from the structural floor above. Upright sprinkler heads are designed to spray water upwards in a dome-shaped pattern, making them ideal for this type of ceiling arrangement. Sidewall sprinkler heads are not suitable as they are designed to spray water horizontally along the walls. Pendant sprinkler heads are typically used for ceilings with a smooth surface, and recessed sprinkler heads are designed to be concealed within the ceiling.Rate this question:
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- 15.
In the following diagram, what is the name for the portion of stair identified by A?
- A.
Nosing
- B.
Tread
- C.
Run
- D.
Riser
Correct Answer
B. TreadExplanation
The portion of the stair identified by A is called the tread. The tread is the horizontal part of the step that is stepped on when ascending or descending the stairs. It provides a flat surface for the foot to rest on and is an essential component of a staircase.Rate this question:
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- 16.
In specifying new window coverings and track to replace building standard window coverings, what coordination is LEAST important for the interior designer to undertake?
- A.
Checking with the architect to see that the new coverings do not adversely affect the heating of the glass
- B.
Determining if the mechanical engineer objects to the replacement plans
- C.
Asking the electrical engineer if the new light reflectance is detrimental
- D.
Verifying that the building owner does not care about the change in the building's exterior appearance
Correct Answer
C. Asking the electrical engineer if the new light reflectance is detrimentalExplanation
The interior designer does not need to coordinate with the electrical engineer regarding the new light reflectance because it does not directly affect the functionality or safety of the window coverings. The other options involve coordination with the architect, mechanical engineer, and building owner, which are more relevant to the design and installation process.Rate this question:
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- 17.
What does the symbol shown indicate?
- A.
Suspended exit light
- B.
Recessed directional light
- C.
Floor telephone outlet
- D.
Fire alarm horn
Correct Answer
A. Suspended exit lightExplanation
The symbol shown indicates a suspended exit light.Rate this question:
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- 18.
What would be the best combination of dimensions for a stair serving a sleeping loft in a condominium where space was at a premium and the floor-to-floor dimension was 9 ft 4 in?
- A.
8 in riser, 10 in tread
- B.
8 in riser, 9 in tread
- C.
7 in riser, 9 in tread
- D.
7 in riser, 11 in tread
Correct Answer
D. 7 in riser, 11 in treadExplanation
The best combination of dimensions for a stair serving a sleeping loft in a condominium where space is at a premium and the floor-to-floor dimension is 9 ft 4 in would be a 7-inch riser and an 11-inch tread. This combination allows for a slightly steeper staircase, which helps to conserve space while still maintaining a comfortable and safe stair design. The larger tread size also provides more surface area for stepping, making it easier to navigate the stairs.Rate this question:
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- 19.
What would NOT be allowed in an access floor with removable panels?
- A.
Electrical conduit
- B.
HVAC
- C.
Plumbing
- D.
Computer cable
Correct Answer
C. PlumbingExplanation
In an access floor with removable panels, plumbing would not be allowed. This is because access floors are designed to provide easy access to electrical and data cables, as well as HVAC systems. Plumbing, on the other hand, requires a different type of infrastructure and is not typically integrated into access floors. Therefore, it would not be allowed in this specific type of flooring system.Rate this question:
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- 20.
In a plenum, how can a fire be prevented from spreading horizontally?
- A.
Use fire-rated dividers
- B.
Install fire dampers
- C.
Use fiberglass material
- D.
Install sprinker systems
Correct Answer
A. Use fire-rated dividersExplanation
Fire-rated dividers are designed to prevent the spread of fire horizontally by creating a barrier that can withstand fire for a certain period of time. These dividers are made of materials that have been tested and proven to have fire-resistant properties. By installing fire-rated dividers in a plenum, the spread of fire can be contained to a specific area, preventing it from spreading to other parts of the building. This helps to protect the occupants and minimize damage to property.Rate this question:
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- 21.
A client has requested that special security protection be provided for critical paper files containing corporate trade secrets, but at a reasonable cost. In designing the file room, the interior designer should suggest
- A.
Electronic shielding of the file room
- B.
Magnetic contacts on all doors leading to the file room
- C.
Photoelectric beams within the room
- D.
Card readers at the doors leading to the file room
Correct Answer
D. Card readers at the doors leading to the file roomExplanation
Card readers at the doors leading to the file room would be the most appropriate suggestion for providing special security protection for the critical paper files containing corporate trade secrets. This solution would ensure that only authorized individuals with the proper access cards can enter the file room, effectively restricting access to the sensitive documents. It would provide a reasonable cost solution while still maintaining a high level of security. Electronic shielding, magnetic contacts, and photoelectric beams may offer some level of security, but they may not be as effective in preventing unauthorized access to the files.Rate this question:
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- 22.
In a nonresidential building, how many stair risers equals a flight?
- A.
2
- B.
12
- C.
3
- D.
1
Correct Answer
A. 2Explanation
In a nonresidential building, a flight of stairs typically consists of two stair risers. This means that there are two individual steps that need to be climbed in order to complete one flight of stairs.Rate this question:
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- 23.
What term is used to denote the member supporting the treads in a wood stairway?
- A.
Carriage
- B.
Saddle
- C.
Stringer
- D.
Header
Correct Answer
A. CarriageExplanation
In a wood stairway, the term "carriage" is used to denote the member that supports the treads. The carriage is typically a horizontal beam or structure that runs along the length of the stairs and provides support for the treads, which are the horizontal steps of the staircase. It is an essential component of the stairway structure, ensuring stability and safety for anyone using the stairs. The other options, such as saddle, stringer, and header, do not specifically refer to the member supporting the treads in a wood stairway.Rate this question:
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- 24.
In designing a new space, the interior designer can influence life safety most by coordinating with consultants concerning
- A.
Compartmentation
- B.
Sprinklers
- C.
Fire detection
- D.
Smoke control
Correct Answer
B. SprinklersExplanation
The interior designer can influence life safety most by coordinating with consultants concerning sprinklers. Sprinklers play a crucial role in fire protection by automatically detecting and extinguishing fires, preventing them from spreading and causing harm to occupants. By working closely with consultants, the interior designer can ensure that the sprinkler system is properly integrated into the overall design, considering factors such as placement, aesthetics, and accessibility. This coordination helps to maximize the effectiveness of the sprinkler system and enhance life safety in the designed space.Rate this question:
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- 25.
If all of the following are present, what must be modified to achieve acoustic separation in a perimeter office?
- A.
Batt insulation
- B.
Convector
- C.
Acoustical tiles
- D.
Gypsum boards
Correct Answer
B. ConvectorExplanation
To achieve acoustic separation in a perimeter office, the convector must be modified. Convector units are heating or cooling devices that are often installed along the perimeter of a room. They can generate noise, which can disrupt the acoustic environment. To achieve acoustic separation, the convector unit would need to be modified or replaced with a quieter alternative that does not produce excessive noise.Rate this question:
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- 26.
An enclosed vertical area for pipes or ductwork that runs from one floor to another
Correct Answer
chase
chasesExplanation
A chase is an enclosed vertical area that is used to house pipes or ductwork, allowing them to run from one floor to another. It provides a designated space for these utilities, making them easily accessible for maintenance and repairs. The term "chase" can be used both in singular and plural form, depending on the number of vertical areas being referred to.Rate this question:
- 27.
A unit or device that radiates heat from water to the surrounding air, usually through closely spaced fins. Convectors are usually placed against a wall under a window.
Correct Answer
convector
convectors
convecterExplanation
A convector is a unit or device that transfers heat from water to the surrounding air. This is typically done through closely spaced fins. Convectors are commonly positioned against a wall, usually under a window. The correct answer is "convector, convectors, convecter" as these terms accurately describe the unit and its function.Rate this question:
- 28.
A device placed in a duct that is designed to automatically close when subjected to certain increase in temperature or with the detection of smoke
Correct Answer
fire damper
fire dampersExplanation
A fire damper is a device placed in a duct that is designed to automatically close when there is a certain increase in temperature or when smoke is detected. This helps to prevent the spread of fire and smoke through the duct system, providing a barrier to contain the fire and protect other areas of the building. Fire dampers are an important safety feature in buildings, as they help to prevent the rapid spread of fire and smoke, allowing occupants more time to evacuate and firefighters more time to control the situation.Rate this question:
- 29.
Acronym for heating, ventilating, and air conditioning
Correct Answer
HVAC
hvacExplanation
The correct answer is HVAC, which stands for heating, ventilating, and air conditioning. This acronym is commonly used to refer to the systems and technology used to control indoor temperature, humidity, and air quality. HVAC systems are essential in maintaining a comfortable and healthy environment in buildings, homes, and vehicles. The lowercase "hvac" is also an acceptable alternative to the acronym.Rate this question:
- 30.
A change in elevation having two or more risers. (In the IBC, a stairway is a change in elevation of one or more risers)
Correct Answer
Stairway
StairwaysExplanation
The correct answer is "Stairway, Stairways." This is because a stairway is defined as a change in elevation that has two or more risers. In the International Building Code (IBC), a stairway is specifically described as a change in elevation of one or more risers. Therefore, both "Stairway" and "Stairways" are correct answers as they accurately describe the definition of a stairway according to the IBC.Rate this question:
- 31.
That portion of egress achieving a change in elevation by means of a single riser
Correct Answer
Step
StepsExplanation
The correct answer is "Step, Steps". In the context of egress, a step refers to a single riser that allows for a change in elevation. Steps, on the other hand, is the plural form of step, indicating multiple risers. Therefore, the correct answer for achieving a change in elevation by means of a single riser is "Step, Steps".Rate this question:
- 32.
A machine used to cut a small opening in a concrete floor for conduit or poke-through electrical outlets.
Correct Answer
Core drillExplanation
A core drill is a machine that is specifically designed to cut small openings in concrete floors for conduit or poke-through electrical outlets. It is a specialized tool that is used in construction and electrical work to create precise and clean holes in concrete surfaces. The core drill is equipped with a diamond-tipped drill bit that rotates at high speeds, allowing it to efficiently cut through the tough concrete material. This tool is essential in various industries where electrical wiring needs to be installed in existing concrete structures.Rate this question:
- 33.
In a high-rise building, the wall generally used as part of the structure of the building services such as elevator and stairway shafts, toilet rooms, mechanical rooms, and the like
Correct Answer
core walls
core wallExplanation
The correct answer is core walls. In a high-rise building, core walls are typically used as part of the structure and house important building services such as elevator and stairway shafts, toilet rooms, mechanical rooms, and other utilities. These walls provide structural stability and support to the building, ensuring the overall strength and functionality of the structure.Rate this question:
- 34.
A stud above a door opening or below a windowsill
Correct Answer
Cripple stud
Cripple studsExplanation
A cripple stud is a vertical framing member that is located above a door opening or below a windowsill. It provides additional support and stability to the surrounding structure. Cripple studs are typically shorter in length compared to regular studs and are used to fill in the gaps between the header or sill plate and the top or bottom plate of the wall. They help distribute the weight of the structure evenly and prevent sagging or bowing.Rate this question:
- 35.
Light-gauge sheets of steel that are ribbed, fluted, or otherwise stiffened by shape for use in constructing a floor or roof.
Correct Answer
Decking
DeckExplanation
The correct answer is "Decking, Deck". In construction, decking refers to light-gauge sheets of steel that are ribbed, fluted, or otherwise stiffened by shape. These sheets are used for constructing floors or roofs. A deck is a flat surface that is typically constructed outdoors, often elevated from the ground. It is commonly made of wood or composite materials and is used for various purposes such as outdoor living spaces or as a platform for outdoor activities. Therefore, "Decking, Deck" is the correct answer as it encompasses both the specific material used in construction and the general term for a flat surface.Rate this question:
- 36.
A mixture of portland cement, water, and sand, containing enough water to allow it to be poured or pumped into joins, spaces, and cracks within masonry walls.
Correct Answer
GroutExplanation
Grout is a mixture of portland cement, water, and sand that has enough water content to make it pourable or pumpable. It is used to fill in joins, spaces, and cracks within masonry walls. Grout is typically used in construction to provide structural integrity and to seal gaps between tiles or bricks.Rate this question:
- 37.
A framing member that crosses and supports the ends of joists, transferring weight to parallel joists. These are used to form openings in wood-framed floors.
Correct Answer
Header
HeadersExplanation
A header or headers in construction refer to a framing member that is placed horizontally and is used to support the ends of joists. It helps in transferring the weight of the structure to the parallel joists, providing stability and strength to the overall framework. Headers are commonly used to create openings, such as doors or windows, in wood-framed floors. They play a crucial role in maintaining the structural integrity of the building by distributing the load evenly and preventing any sagging or collapsing of the floor system.Rate this question:
- 38.
A horizontal structural member over an opening that carries the weight of the wall above it.
Correct Answer
Lintel
LintelsExplanation
A lintel is a horizontal structural member that is placed over an opening, such as a door or window, to support the weight of the wall above it. It helps distribute the load evenly and prevents the opening from collapsing. Lintels are commonly made of materials like wood, stone, or steel, depending on the requirements of the structure. They play a crucial role in maintaining the stability and integrity of the wall and the overall structure.Rate this question:
- 39.
A piece of timber laid horizontally.
Correct Answer
Purlin
PurlinsExplanation
A purlin is a piece of timber that is laid horizontally. It is commonly used in construction to provide support and stability to the roof structure. Purlins are typically placed perpendicular to the rafters or trusses and help distribute the weight of the roof evenly. They also help to prevent sagging or bending of the roof. Multiple purlins are used in a roof structure, and they are often spaced at regular intervals to ensure proper support.Rate this question:
- 40.
The plywood or particleboard covering placed over exterior studding or rafters of a building that provides strength and a base for the application of wall or roof cladding.
Correct Answer
Sheathing
SheathExplanation
Sheathing refers to the plywood or particleboard covering that is placed over the exterior studding or rafters of a building. It provides strength and serves as a base for the application of wall or roof cladding. On the other hand, a sheath is a protective covering or case, typically used to enclose something such as a sword or cable. Therefore, in the given context, sheathing is the correct answer as it accurately describes the material used for covering the exterior structure of a building.Rate this question:
- 41.
A horizontal wood member that serves as the base for the studs in a stud partition
Correct Answer
Sole Plate
Sole platesExplanation
A sole plate is a horizontal wood member that acts as the foundation for the studs in a stud partition. It provides stability and support to the structure by distributing the weight of the wall evenly. Sole plates are typically made of treated lumber to prevent moisture damage and termite infestation. They are secured to the floor with nails or screws and serve as the starting point for building the rest of the wall.Rate this question:
- 42.
A wood member in a floor or roof used to support a header.
Correct Answer
Trimmer
TrimmersExplanation
A trimmer is a wood member that is used in a floor or roof to support a header. It is typically placed on either side of an opening, such as a door or window, and provides additional support to the header. Trimmers help distribute the weight of the structure above the opening and prevent sagging or collapsing. In the context of the question, the correct answer is "Trimmer, Trimmers" as it accurately describes the wood members used for supporting a header in a floor or roof.Rate this question:
- 43.
A structural beam of steel having a shape whose cross section resembles the letter H. A wide-flange beam has wider flanges than an I-beam. Wide-flange beams are used for beams as well as columns because their shape gives them approximately equal strength in both directions.
Correct Answer
Wide-flange beam
Wide flange beam
Wide-flange beams
Wide flange beamsExplanation
Wide-flange beams are used for beams as well as columns because their shape gives them approximately equal strength in both directions. The wider flanges of a wide-flange beam provide more surface area for distributing the load, resulting in increased strength and stability. This makes wide-flange beams suitable for applications where the load may be applied in different directions, such as in beams and columns. The H-shaped cross section of a wide-flange beam also helps to resist bending and torsional forces, further enhancing its structural integrity.Rate this question:
- 44.
What ratings are the most important in evaluating the acoustic quality of a floor and ceiling assembly?I. STCII. NRCIII. IICIV. NC
- A.
III and IV
- B.
I and II
- C.
II and III
- D.
I and III
Correct Answer
D. I and IIIExplanation
The most important ratings in evaluating the acoustic quality of a floor and ceiling assembly are IIC (Impact Insulation Class) and STC (Sound Transmission Class). IIC measures the impact sound insulation performance of a floor assembly, while STC measures the airborne sound transmission performance of a wall, ceiling, or floor assembly. Therefore, ratings I and III are the most important in evaluating the acoustic quality of a floor and ceiling assembly.Rate this question:
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- 45.
If a material supplier says that adding his product to a wall assembly in a critical acoustic situation would increase the noise reduction (STC rating) between two rooms by slightly more than 3 dB, what should the designer's reaction be?
- A.
Inquire whether some modification can be made to the product to increase its rating to 6 dB
- B.
Specify the product as long as it does not affect the construction cost by more than 5%
- C.
Determine what the additional cost would be and then decide whether or not to use the product
- D.
Thank him for stopping by but explain that the amount of noise reduction his product provides does not make it worth the effort or cost
Correct Answer
D. Thank him for stopping by but explain that the amount of noise reduction his product provides does not make it worth the effort or costExplanation
The designer's reaction should be to thank the supplier for the information but explain that the increase in noise reduction provided by the product is not significant enough to justify the effort or cost. This suggests that the product may not be necessary or beneficial in this particular acoustic situation.Rate this question:
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- 46.
During the design development phase of design, what method would NOT be used to reduce potential noise problems in a room whose exact size and shape had not yet been determined?
- A.
Plan for sound-absorbent material on the walls of the room
- B.
Study ways to increase the transmission loss of the room's partitions
- C.
Design the room to have the largest ceiling surface area possible
- D.
Minimize the length of the wall separating the room from noisier areas
Correct Answer
C. Design the room to have the largest ceiling surface area possibleExplanation
Designing the room to have the largest ceiling surface area possible may not necessarily reduce potential noise problems. The size and shape of the room are not yet determined, so focusing solely on the ceiling may not address other factors that contribute to noise transmission, such as walls, partitions, and other surfaces. Therefore, this method may not be effective in reducing potential noise problems in a room with an undetermined size and shape.Rate this question:
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- 47.
The construction assembly shown would be best for controlling which of the following kinds of acoustic situations?
- A.
Impact noise
- B.
Transmission from room B to room A
- C.
Transmission from room A to room B
- D.
Mechanical vibration
Correct Answer
C. Transmission from room A to room BExplanation
The construction assembly shown would be best for controlling transmission from room A to room B. This can be inferred because the assembly includes multiple layers of materials, such as insulation, sound barriers, and resilient channels, which are effective in reducing sound transmission between rooms.Rate this question:
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- 48.
Which is the most accurate statement about sound?
- A.
A good acoustic material absorbs all frequencies equally
- B.
A sound of 50 dB is twice as sound as a sound of 25 dB
- C.
A desirable goal of acoustic design is to eliminate all background noise
- D.
A 7dB reduction of the noise within a room would be clearly noticeable.
Correct Answer
D. A 7dB reduction of the noise within a room would be clearly noticeable.Explanation
A 7dB reduction of the noise within a room would be clearly noticeable. This statement suggests that a decrease in noise level by 7 decibels would result in a noticeable reduction in the overall sound within a room. It implies that even a relatively small decrease in noise can have a significant impact on the perceived sound level.Rate this question:
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- 49.
To detail a doorframe for a conference room where privacy is critical, which of the following is LEAST likely to be required?
- A.
A solid-core door
- B.
Neoprene gasketing
- C.
A heavy-duty; silent door closer
- D.
An automatic door bottom
Correct Answer
C. A heavy-duty; silent door closerExplanation
A heavy-duty; silent door closer is least likely to be required for detailing a doorframe for a conference room where privacy is critical. While a silent door closer may be desirable to minimize noise, it is not directly related to privacy. The other options, such as a solid-core door, neoprene gasketing, and an automatic door bottom, are more directly related to ensuring privacy by minimizing sound transmission and maintaining a secure seal.Rate this question:
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- 50.
Insulation is used in interior walls to
- A.
Increase the fire resistance of the wall
- B.
Improve the acoustic characteristics of the wall
- C.
Improve the strength of the wall
- D.
Prevent heat transmission from one side to the other
Correct Answer
B. Improve the acoustic characteristics of the wallExplanation
Insulation is used in interior walls to improve the acoustic characteristics of the wall. Insulation materials help to absorb and dampen sound waves, reducing noise transmission between rooms. This can provide a quieter and more comfortable living or working environment by reducing the impact of external noise and minimizing sound transfer between different areas of a building.Rate this question:
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Current Version
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Mar 22, 2023Quiz Edited by
ProProfs Editorial Team -
Jun 15, 2009Quiz Created by
Lt17
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