Acoustics quiz

Please answer the following 10 multiple choice questions, then click 'submit' to check the result. The pass mark for a CPD certificate is 8 out of 10, and you may retake the quiz as many times as you wish, but the questions will vary! Please note that one, two, three or all of the possible answers presented for each question may be right, and to gain a mark for that question all correct answers must be identified.

Good luck

Acoustics

There are many proprietary acoustic products available, which of these statements is true?

The performance of products can vary significantly even though the products may appear to be similar
Acoustic vinyl flooring is good for impact sound because it addresses the issue at source
Standard office ceiling tiles help significantly with airborne sound insulation
Floor treatment systems all provide a similar improvement in sound insulation

Which of the following statements are true for acoustic design of schools?

The main reference for acoustic design of schools is Building Bulletin 93
External wall sound insulation is important for schools so that occupants of neighbouring buildings are not disturbed by noise of children
Reverberation and transmission of speech characteristics are important for schools
Sound insulation in schools is not mentioned in Building Regulations

In England and Wales the impact sound requirement for a separating floor between purpose built dwellings is ...?

L'nT,w < 52 dB
L'nT,w > 62 dB
L'nT,w > 52 dB
L'nT,w < 62 dB

Application of the mass law shows that ...?

2 times the mass gives approximately 10 dB increase in sound insulation
3 times the mass gives approximately 5 dB increase in sound insulation
2 times the mass gives approximately 5 dB increase in sound insulation
3 times the mass gives approximately 12 dB increase in sound insulation

Which of the following should be carried out for good detailing practice of junctions?

There should be continuous solid contact across separating walls and floors
Joints in lining boards should be staggered
Wall lining boards should be fitted in contact with the floor slab to minimise gaps
Avoid contact between wall and floor finishes

In England and Wales the airborne sound requirement for a separating wall between purpose built dwellings is ...?

DnT,w + Ctr ≥ 40 dB
DnT,w + Ctr ≤ 45 dB
DnT,w + Ctr ≥ 45 dB
DnT,w + Ctr ≤ 40 dB

Acoustic insulation testing is generally carried out at ...?

One single frequency
A range of frequencies from 100 Hz to 3150 Hz
Two specific frequencies of 100 Hz and 3150 Hz
A range of frequencies from 300 Hz to 1000 Hz

For separating floors between dwellings which of these statements are true?

Separating floors must include structural concrete
The ceiling part of the floor can have a significant effect on the acoustic performance
The floor treatment applied is usually insignificant to the acoustic performance
There is a wide range of separating floor solutions that can be used in steel framed buildings

Sound insulation requirements are included in which part of the England and Wales Building Regulations?

E
B
A
L

Which of the following design approaches should be applied for good acoustic performance?

Concentrate on reducing direct sound transmission rather than flanking sound transmission
Focus on reducing flanking sound as well as direct sound transmission
Apply the combined principles of mass, isolation and sealing
Concentrate on maximising mass to improve sound insulation