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

For demonstrating compliance with the acoustic regulations which of these statements is correct?

Robust Details must be used for construction of new dwellings
Dwellings must either be constructed using Robust Details or on-site acoustic testing must be carried out
A qualified acoustic engineer must assess the details used for constructing dwellings
All dwellings must undergo on-site acoustic testing

Impact sound insulation is generally important for what?

Floors only
Walls only
Floors and walls
Neither walls nor floors

Which of these statements is correct?

It is generally easier to provide sound insulation for high frequency sound
It is generally easier to provide sound insulation for low frequency sound
Sound insulation materials have the same effect on high frequency and low frequency sound
Sound insulation is only required for low frequency sound

Which of the following statements are true for separating wall construction?

Separating walls can be constructed from light steel frames lined with plasterboard
Resilient bars must be incorporated in the construction of separating walls
Mineral wool in the wall construction helps to improve the sound insulation
Light steel separating walls must be twin frame construction

Loudness of sound is measured in what units?

Hertz (Hz)
Joules (J)
Decibels (dB)
Watts (W)

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 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

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

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