4967971
Descripción
Test por Ashleigh Picken, actualizado hace más de 1 año
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Creado por Ashleigh Picken
hace alrededor de 8 años
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Pregunta 1
Pregunta
Acoustical and noise control concerns exist in almost every modern building
Respuesta
- True
- False
Pregunta 2
Pregunta
Most commonplace acoustical issues are resolved using a consultant's assistance?
Respuesta
- True
- False
Pregunta 3
Pregunta
An acoustical consultant is usually required for the design of a concert hall or to solve a complicated noise problem.
Respuesta
- True
- False
Pregunta 4
Pregunta
Most sound is non-complex, generally consisting of continum of frequencies.
Respuesta
- True
- False
Pregunta 5
Pregunta
Sound is the ear’s response to pressure fluctuations in the air caused by
Respuesta
-
a vibrating object
-
a back and forth motion of air particles
-
none of the above
Pregunta 6
Pregunta
The lower the TL of an assembly, the greater the sound insulation provided by it
Respuesta
- True
- False
Pregunta 7
Pregunta
The STC of an assembly can be improved if we make it heavier
Respuesta
- True
- False
Pregunta 8
Pregunta
STC of a 2 x 4 wood stud wall with ½” gypsum board each side = 37. To improve it, we can…
Respuesta
-
Add fibrous insulation
-
Add Foam board
-
Add Structural insulated panels
Pregunta 9
Pregunta
NRC stands for
Respuesta
-
Noise Reduction Corollary
-
Noise Reduction Coefficient
-
NO RICE CATHY!
Pregunta 10
Pregunta
Sound originating within a room can only be reduced by using sound-absorbing materials
Respuesta
- True
- False
Pregunta 11
Pregunta
Sound-absorbing materials(acoustical materials) have a sound-absorption co-efficient of
Respuesta
-
<0.2
-
>0.2
-
>0.4
-
<0.4
Pregunta 12
Pregunta
The sound-absorptive coefficient of an assembly =
Respuesta
-
the sound energy that is NOT reflected by the assembly divided by the total sound energy falling on the assembly
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the sound energy that IS reflected by the assembly divided by the total sound energy falling on the assembly
Pregunta 13
Pregunta
A closed window is the perfect acoustical absorber because it does not reflect any sound
Respuesta
- True
- False
Pregunta 14
Pregunta
The sound pressure that corresponds to the sensation of pain in the ear is approx
Respuesta
-
20 PA
-
30 PA
-
10 PA
Pregunta 15
Pregunta
Although sound pressures are small, their range is extremely large
Respuesta
- True
- False
Pregunta 16
Pregunta
Massive heavyweight assemblies are horrible sound insulators
Respuesta
- True
- False
Pregunta 17
Pregunta
What are the 3 basic framing members [blank_start]_____________[blank_end], [blank_start]_______________[blank_end], [blank_start]_____________.[blank_end]
Respuesta
-
Studs & joists
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Channels
-
Tracks
Pregunta 18
Pregunta
Light gauge steel members are increasingly used as blocking/backing for handrails, upper cabinets, or any other secured material or assembly
Respuesta
- True
- False
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