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

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

Impact sound insulation is generally important for what?

Floors only
Walls only
Floors and walls
Neither walls nor floors

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

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

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

For integration of elements which of these statements are correct?

It is necessary to consider the detailing for integration of elements to maintain acoustic performance
Only structural elements such as beams and columns are significant to sound insulation
Domestic scale pipes and electric cables are insignificant to sound insulation
Pipes and cables cannot be included in a domestic separating wall

To the human ear a 10 dB increase in sound 'feels' like an increase in loudness of how many times?

1
2
3
4

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

For walls within the same dwelling (internal walls) which of these statements is true?

Internal walls must be at least 150 mm thick
Two layers of plasterboard must be used on both sides of an internal wall
For internal walls it is not necessary to demonstrate compliance with regulations by PCT or using Robust Details
Specially designed 'acoustic' studs must be used for internal wall construction

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