NCIDQ IDFX 1-3 Flashcards
Building Systems & Construction
What is safety data sheet (SDS)?
A document provided by a manufacturer containing information about the physical makeup of a substance, proper storage and handling procedures, and other safety issues.
What is composite wood veneer?
A product made by slicing readily available, fast-growing trees into veneers, dyeing the veneers, and then gluing them together to create an artificial log. The log is then re-sliced to produce a variety of wood veneers.
What is clerestory?
This is vertically glazed area placed between two different roof levels to admit natural light.
What is the unit of measure for the frequency of sound?
The hertz (Hz) is the unit of measure for this and is equal to one cycle per second.
What is the unit of measure for the sound intensity, based on a logarithmic scale?
The decibel (dB) is the unit of measure for this.
What do most people perceive when a sound increase by 10 dB?
When a sound increase by this amount, most people perceive a doubling in loudness.
What frequency range can be heard by most healthy young people?
This range is 20 Hz to 20,000Hz
What is the coefficient of absorption?
This is the ratio of the sound intensity absorbed by a material to the total sound intensity reaching the material.
What is the noise reduction coefficient (NRC)
This is a single-number average of a material’s coefficients of absorption at 250Hz, 500Hz, 1000Hz, and 2000Hz, rounded to the nearest 0.05.
What is the reverberation time?
This is the time it takes for the sound level in a space to decrease 60dB after the source has stopped producing the sound.
What is the ceiling attenuation class (CAC)?
This is a single-number measure of the transmission loss through ceiling tiles between two closed rooms where is no barrier above the suspended ceiling.
What percentage of a commercial building’s total energy use is typically devoted to electric vehicles lighting and the cooling it requires?
30-40% of a commercial building’s total energy use is typically devoted to this.
What are the three most common types of interior glazing?
- Float
- Tempered
- Laminated
What are the primary elements used to make bronze?
Copper and Tim are used to make this material.
What is a concrete masonry unit?
This building product, abbreviated CMU is also commonly known as concrete block.
What is mean radiant temperature?
This is a measure is the heat a person gains from or loses to his or her surroundings through radiation. It is used in assessing how comfortable a room is.
The value is a weight average of the various surface temperatures in a room. (Taking into account an occupant’s angle of exposure to those surface) and any sunlight present.
What are the standard depth of metal studs?
1 5/8” - 41mm 2 1/2” - 64mm 3 5/8” - 92mm 4” - 102mm 6” - 152mm
What is the generic name for fire-rated gypsum wallboard?
Type X is the generic name of this material.
What are four advantages of using portland cement plaster as a finish material?
- Hard and abrasion resistant
- Water resistant
- Easily formed into curved and ornate surface
- A good base for wall tile
What are four disadvantages of using portland cement plaster as a finish material?
- More expensive than gypsum wallboard
- Slower to construct with than gypsum wallboard
- Wet and messy to work with
- Challenging to work with, this requiring more-skilled labor
What is a pivot?
This is a Type of hardware used to hang doors. It consists of a rotating bottom pin and a corresponding pin at the top of the door.
In regards to construction, what is a plenum?
In commercial construction, this is the space between the building structural roof or floor and suspended ceiling.
What effect does an acoustical ceiling have on sound?
This construction element mainly absorb sound.
Stainless steel is primarily an alloy steel and an additional element. Which one?
Chromium is added to steel to create this material.
What process occurs when dissimilar metals are in contract in the presence of water?
The process that occurs under these conditions is galvanic action.
Galvanic action is a form of electrochemical corrosion in which one metal gives up electrons to the other, corroding quickly while slowing the other metal’s corrosion.
What types of steel floor or roof for
Among system provides generous space in both directions for pipes, ducts and conduit?
This is the primary benefit of an open-web steel joints system.
What types of precast structural member is often used to provide support as a beam and as floor decking?
A double-tee is often used in these two applications.
What electrical components are required for switches, outlets, lights, and locations where electrical conductors have been spliced?
Junction box are required at these locations.
What is a ground fault interrupter?
This is an elecrical safety device that detects small current leaks and disconnects the power to a circuit.
What are the components labeled A through D, and what purpose does each serve?
A. Stack vent: connects to a soil or waste stack above the highest fixture.
B. Vent stack: a vent pipe that is separate from a soil or waste stack
C. Soil stack: carries waste human waste
D. Waste stack: carries waste other than human waste
What is the purpose of a plumbing trap?
The plumbing component holds a quality of water to provide a seal that prevents gases from the sewage system from entering the building.
What is an intumescent material?
This a material that, when exposed to heat, expands rapidly and insulate or fills spaces to prevent the passage of fire and smoke.
What are the components labeled A trough D?
A. Run of stair
B. Tread
C. Nosing
D. Riser
What is a flight in stairway?
This is a series of two or more riders between one floor or landing and the next.
What is a winding stairway?
This is a type of stairway that has tapered treads that are wider one end than at the other.
What two materials have largely supplanted plywood in interior construction application?
Particleboard and medium density fiberboard have generally supplanted this material in interior constructiohn.
What is a jalousie window?
This window type consists of individual horizontal pieces of glass that all pivot outward at once for ventilation.
What is direct glare?
This results when a light source in the field of vision causes discomfort and interference with a visual task.
What is running trim?
This type of molding is installed end to end.
which finish material for woodwork provides the hardest, most durable surface?
When used as a finish material for woodwork, polyester has these characteristics.
What is Lacquer?
This is a coating material with a high nitrocellulose content that has been modified with resins and plasticizers dissolved in a volatile solvent.
What is solid surfacing?
This is a homogeneous, polymer-based surfacing material.
Arc-fault interrupter
An arc-fault circuit interrupter also known as an arc-fault detection device is a circuit breaker that breaks the circuit when it detects an electric arc in the circuit it protects to prevent electrical fires
Ground fault interrupter
GFCI
GFCI receptacle with red button for Test and black button for Reset
A ground fault circuit interrupter (GFCI), or Residual Current Device (RCD) is a type of circuit breaker which shuts off electric power when it senses an imbalance between the outgoing and incoming current.
