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