BEAM Plus Interiors Manual

BEAM P

LUS

NTERIORS

OMMERCIAL

, R

ETAIL

NSTITUTIONAL

NDOOR

NVIRONMENTAL

UALITY

(IEQ)

IEQ 11 A

COUSTICS

When the most appropriate criteria for room type is not stated in the

Manual, the Applicant shall select appropriate criteria, and provide

supporting documentation to justify same.

Compliance shall be demonstrated by detailed calculation, or

measurement, or both, depending on the Applicant’s preference.

Reverberation Time

The reverberation time shall be assessed using Sabine’s formula [

or similar alternative taking into account the room details and

appropriate assumptions about the materials in the space.

Measurements during commissioning shall use the method given in

ISO 3382 [

] or equal equivalent. The submission shall include at

least one sample of each type of occupied space

Airborne Isolation

The Applicant shall submit a schedule of the rooms in the

project space ,

the noise isolation criteria adopted, relevant construction

details as they impact on noise isolation, the rooms/premises subject

to field tests or for which detailed calculations/simulations have been

made, underlying assumptions, and the results of tests or

calculations/simulations demonstrating compliance with the criteria

Internal Noise level

The Applicant shall submit calculations or site measurements should

include at least one sample of each type of occupied space, taking

account the worst case condition of exposure to noise source external

to the space, and undertaken during periods appropriate to the usage

pattern for the space. Measuring equipment shall conform to the

accuracy requirements given in IEC 60804 to type 2 or better, or

equal equivalent standard.

Only the noise from and related to, the Building Services equipment

shall be assessed.

Documentation

Credit(s) shall be achieved when the Applicant provides the

documentation stated below, to demonstrate compliance:

drawing, floor plan layouts highlighting measurement

locations;

ii.

measurement, reverberation time

iii.

measurement, NC level measurement;

iv.

calibration certificate for all sound level meters;

calculations, reverberation time, absorption coefficients;

vi.

calculations, NC level;

vii.

calculations, airborne isolation, construction details for the

walls ;

viii.

technical data sheets;

I.Sharland. Woods practical guide to noise control. Colchester, England.

International Standard Organization. ISO 3382. Acoustics - Measurement of the reverberation time of rooms with

reference to other acoustical parameters.