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Technical Booklet G - Resistance to the Passage of Sound
NI-wide·Technical Booklet G Resistance to the Passage of Sound
Resistance to the passage of sound Technical Booklet G October 2012 Finance and Personnel Department www.dfpni.gov.uk Building Regulations (Northern Ireland) 2012 Guidance
soundTechnical Booklet G: Scope and Purpose
NI-wide·Technical Booklet G Resistance to the Passage of Sound
This Technical Booklet, which takes effect on 31st October 2012, is one of a series that has been prepared by the Department of Finance and Personnel (the Department) for the purpose of providing prac
soundApplicable Regulations
NI-wide·Technical Booklet G Resistance to the Passage of Sound
The guidance contained in this Technical Booklet relates only to the requirements of regulations 49, 50, 51, 52 and 53. The work will also have to comply with all other relevant requirements of the Bu
soundMaterials and Workmanship
Regulation 23NI-wide·Technical Booklet G Resistance to the Passage of Sound
Any building work which is subject to requirements imposed by Part A of the Building Regulations should be carried out in accordance with regulation 23 of those regulations. Guidance on meeting these
soundNamed standards
NI-wide·Technical Booklet G Resistance to the Passage of Sound
Where this Technical Booklet makes reference to a named standard, the relevant version of the standard is the one listed in Appendix C. However, if this version has been replaced or updated by the iss
soundDiagrams
NI-wide·Technical Booklet G Resistance to the Passage of Sound
The diagrams in this Technical Booklet supplement the text. They do not show all the details of construction and are not intended to illustrate compliance with any other requirement of the Building Re
soundProtected buildings
NI-wide·Technical Booklet G Resistance to the Passage of Sound
District councils have a duty to take account of the desirability to preserve the character of protected buildings when carrying out their functions under Building Regulations. Therefore, where work i
soundconservationOther legislation – The Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993
NI-wide·Technical Booklet G Resistance to the Passage of Sound
The Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993 (the Workplace Regulations) contain some requirements which affect building design. The main requirements are now covered
dwellingflatssoundEnvironmental Noise - Scope of Part G
NI-wide·Technical Booklet G Resistance to the Passage of Sound
The requirements of Part G do not address environmental noise through the building facade from sources such as aircraft, trains, road traffic or industry. Other legislation covers these areas.
soundEnvironmental Noise Directive and Northern Ireland Implementation
NI-wide·Technical Booklet G Resistance to the Passage of Sound
The EU Directive 2002/49/EC relating to assessment and management of environmental noise, commonly referred to as the Environmental Noise Directive (END), was published in July 2002. The END was imple
soundEnvironmental Noise Regulations (Northern Ireland) 2006 - Scope and Application
NI-wide·Technical Booklet G Resistance to the Passage of Sound
The Environmental Noise Regulations came into force on 20 October 2006. They apply to environmental noise in built-up areas, public parks or other quiet areas in agglomerations (large urban areas) and
soundNoise Mapping and Action Plans under the Regulations
NI-wide·Technical Booklet G Resistance to the Passage of Sound
Under the Regulations and Directive certain authorities (for Northern Ireland - DOENI) are required to compile noise maps showing the noise occurring in a particular area, whether from particular stre
soundTechnical Booklet G: Resistance to the Passage of Sound
NI-wide·Technical Booklet G Resistance to the Passage of Sound
5Technical Booklet G: 2012 Resistance to the passage of sound
soundPart G Application and Interpretation
Regulation 48NI-wide·Technical Booklet G Resistance to the Passage of Sound
48.—(1) Regulation 50 shall not apply to— (a) an internal wall that contains a door; (b) an internal wall that separates an en-suite toilet from the associated bedroom; or (c) existing walls and floor
dwellingflatssoundnon-domesticProtection against sound from other parts of the building and from adjoining buildings
Regulation 49NI-wide·Technical Booklet G Resistance to the Passage of Sound
A dwelling or room for residential purposes shall be designed and constructed in such a way so as to provide reasonable resistance to the passage of sound from other parts of the same building outside
dwellingflatssoundmeans-of-escapeProtection against sound within a dwelling or room for residential purposes
50NI-wide·Technical Booklet G Resistance to the Passage of Sound
Within a dwelling or room for residential purposes reasonable resistance to the passage of airborne sound shall be provided by— (a) internal walls that separate— (i) a bedroom; and (ii) a room contain
dwellingflatssoundmeans-of-escapeReverberation in the common internal parts of buildings containing flats or rooms for residential purposes
51NI-wide·Technical Booklet G Resistance to the Passage of Sound
Any common internal part of a building that contains a flat or a room for residential purposes shall be designed and constructed in such a way as to limit reverberation around those common parts to a
flatsdwellingsoundAcoustic conditions in schools
52NI-wide·Technical Booklet G Resistance to the Passage of Sound
Each room or space in a school building shall be designed and constructed in such a way that it has— (a) acoustic conditions; and (b) reasonable resistance to the passage of sound, appropriate to its
public-buildingsoundSound insulation testing and notice of results
53NI-wide·Technical Booklet G Resistance to the Passage of Sound
Where this regulation applies, the person carrying out the work shall for the purposes of ensuring compliance with regulation 49— (a) ensure that appropriate sound insulation testing is carried out in
soundProtection against sound from other parts of the building and from adjoining buildings
0.1NI-wide·Technical Booklet G Resistance to the Passage of Sound
It is the view of the Department that the requirements of regulation 49 will be met in a dwelling or room for residential purposes where adequate provisions are made in the design and construction of
dwellingresidentialsoundseparating-elementsflanking-constructionSeparating walls and associated flanking constructions for new buildings
0.2NI-wide·Technical Booklet G Resistance to the Passage of Sound
Section 2 – Separating walls and associated flanking constructions for new buildings, gives a range of wall constructions which, if properly designed and constructed, should provide reasonable resista
dwellingnew-buildingsoundseparating-wallsSeparating floors and associated flanking constructions for new buildings
0.2NI-wide·Technical Booklet G Resistance to the Passage of Sound
Section 3 – Separating floors and associated flanking constructions for new buildings, gives a range of floor constructions which, if properly designed and constructed, should provide reasonable resis
dwellingnew-buildingsoundseparating-floorsDwellings formed by material change of use
0.2NI-wide·Technical Booklet G Resistance to the Passage of Sound
Section 4 – Dwellings formed by material change of use, gives one wall treatment, two alternative floor treatments and one stair treatment which, if properly designed and constructed, should provide r
dwellingmaterial-change-of-usesoundRooms for residential purposes
0.2NI-wide·Technical Booklet G Resistance to the Passage of Sound
Section 6 – Rooms for residential purposes, gives a range of wall and floor constructions which, if properly designed and constructed, should provide reasonable resistance to the passage of airborne,
residentialsoundProtection against sound within a dwelling or room for residential purposes
0.3NI-wide·Technical Booklet G Resistance to the Passage of Sound
It is the view of the Department that the requirements of regulation 50 will be met in a dwelling or room for residential purposes where reasonable provisions are made in the design and construction o
dwellingresidentialsoundinternal-wallsinternal-floorsInternal walls and floors for new buildings
0.4NI-wide·Technical Booklet G Resistance to the Passage of Sound
Section 5 – Internal walls and floors for new buildings, gives a range of wall and floor constructions which, if properly designed and constructed, should provide reasonable resistance to the passage
dwellingsoundflatsReverberation in common internal parts of residential buildings
0.5NI-wide·Technical Booklet G Resistance to the Passage of Sound
It is the view of the Department that the requirements of regulation 51 will be met in a flat, maisonette or room for residential purposes where reasonable provisions are made to limit the reverberati
flatssounddwellingGuidance on reverberation in common internal parts
0.6NI-wide·Technical Booklet G Resistance to the Passage of Sound
Section 7 – Reverberation in the common internal parts of buildings containing flats, maisonettes and rooms for residential purposes, gives guidance on how to determine the amount of additional absorp
flatssoundstairsAcoustic conditions in schools
0.7NI-wide·Technical Booklet G Resistance to the Passage of Sound
It is the view of the Department that the requirements of regulation 52 will be met in each room or space in a school building where reasonable provisions are made to provide acoustic conditions and a
public-buildingsoundReference guidance for acoustic design of schools
0.8NI-wide·Technical Booklet G Resistance to the Passage of Sound
Acoustic conditions in schools is a specialist area and guidance on addressing sound insulation, reverberation time and indoor ambient noise in schools is given in Section 1 of Building Bulletin 93: A
public-buildingsoundSound insulation testing for dwellings and residential rooms
0.9NI-wide·Technical Booklet G Resistance to the Passage of Sound
It is the view of the Department that the requirements of regulation 53 will be met for a dwelling or room for residential purposes where sound insulation testing demonstrates that the sound insulatio
dwellingsoundIntroduction to pre-completion testing
0.10NI-wide·Technical Booklet G Resistance to the Passage of Sound
Pre-completion testing, for new dwellings and rooms for residential purposes (including those formed as a result of material change of use) gives the standards to be achieved, the test procedures, the
dwellingresidentialsoundNotice of sound insulation test
0.11NI-wide·Technical Booklet G Resistance to the Passage of Sound
It is the view of the Department that the requirements of regulation 53 will be met for a dwelling or room for residential purposes where notice of any sound insulation test is given to the district c
dwellingresidentialsoundDwellings - performance standards for separating walls, separating floors, and stairs
Table 1aNI-wide·Technical Booklet G Resistance to the Passage of Sound
New dwellings: Walls - 45 dB (DnT,w + Ctr), Floors and stairs - 45 dB (DnT,w + Ctr), — 62 dB (L'nT,w). Dwellings formed by material change of use: Walls - 43 dB (DnT,w + Ctr), Floors and stairs - 43 d
dwellingsoundseparating-elementsRooms for residential purposes - performance standards for separating walls, separating floors, and stairs
Table 1bNI-wide·Technical Booklet G Resistance to the Passage of Sound
New rooms for residential purposes: Walls - 43 dB (DnT,w + Ctr), Floors and stairs - 45 dB (DnT,w + Ctr), — 62 dB (L'nT,w). Rooms for residential purposes formed by material change of use: Walls - 43
residentialsoundseparating-elementsSound insulation testing requirement
0.12NI-wide·Technical Booklet G Resistance to the Passage of Sound
Pre-completion testing, together with Appendix B: Procedures for sound insulation testing, defines the procedures that should be followed to conduct a sound insulation test of the dwelling or room for
dwellingsoundflatsPerformance standards for separating structures
0.13NI-wide·Technical Booklet G Resistance to the Passage of Sound
It is the view of the Department that the requirements of Part G will be met if separating walls, separating floors, and stairs that have a separating function, together with the associated flanking c
dwellingsoundflatsTesting exemption for approved design details
0.14NI-wide·Technical Booklet G Resistance to the Passage of Sound
The Building Regulations Northern Ireland 2012 apply to building work to which Part G applies, and require appropriate sound insulation testing to be carried out. The exception is that, in the case of
dwellingsoundflatsTesting procedure and result notification
0.15NI-wide·Technical Booklet G Resistance to the Passage of Sound
The sound insulation testing should be carried out in accordance with the procedure described in Appendix B of this Technical Booklet. The results of the testing must be recorded in the manner describ
dwellingsoundflatsQualifications for testing personnel
0.16NI-wide·Technical Booklet G Resistance to the Passage of Sound
Sound insulation testing should be carried out by a person who is registered to test the specific class of building concerned. Sound insulation testing is to be carried out by a test body with appropr
dwellingsoundflatsScope of example constructions for sound insulation
0.17NI-wide·Technical Booklet G Resistance to the Passage of Sound
Sections 2 and 3 of this Technical Booklet give examples of constructions which, if built correctly, should when tested achieve the sound insulation values for dwellings and rooms for residential purp
dwellingsoundnon-exhaustivePre-made and temporary buildings compliance
0.18NI-wide·Technical Booklet G Resistance to the Passage of Sound
Buildings constructed from sub-assemblies that are delivered newly made or selected from stock are no different from any other new building and must comply with all requirements in the Building Regula
dwellingsoundpublic-buildingHistoric buildings and material change of use
0.19NI-wide·Technical Booklet G Resistance to the Passage of Sound
In the case of some historic buildings undergoing material change of use, it may not be practical to improve the sound insulation to the standards set out in Tables 1a and 1b. The need to conserve the
soundconservationSound insulation between domestic and non-domestic spaces
0.20NI-wide·Technical Booklet G Resistance to the Passage of Sound
The performance standards set out in Tables 1a and 1b are appropriate for walls, floors and stairs that separate spaces used for normal domestic purposes. Specialist advice may be needed to establish
dwellingsoundnon-domesticLaboratory sound insulation values for new construction
0.21NI-wide·Technical Booklet G Resistance to the Passage of Sound
It is the view of the Department that the requirements of regulation 50 will be met by the use of constructions for new walls and floors within a dwelling or room for residential purposes that provide
dwellingsoundExample constructions for laboratory sound insulation values
0.22NI-wide·Technical Booklet G Resistance to the Passage of Sound
Section 5 gives examples of constructions that should achieve the laboratory values set out in Table 2. The guidance in these sections is not exhaustive and other designs, materials or products may be
soundnon-exhaustiveDepartment View on Regulation 51 - Sound Absorption Measures
0.23NI-wide·Technical Booklet G Resistance to the Passage of Sound
It is the view of the Department that the requirements of regulation 51 will be met by the use of sound absorption measures described in Section 7 of this Technical Booklet, or other measures of simil
soundnon-domesticDiagrams Illustrating Sound Protection Requirements
0.24NI-wide·Technical Booklet G Resistance to the Passage of Sound
Diagrams 1 to 3 illustrate the relevant parts of the building that should be protected from airborne and impact sound in order to satisfy regulations 49 and 50.
sounddwellingmeans-of-escapeRegulation 49 - Airborne and Impact Sound Insulation
Diagram 1NI-wide·Technical Booklet G Resistance to the Passage of Sound
Diagram 1 Requirement of regulation 49. Flat, maisonette or room for residential purposes. Other parts of the same building. Floor of open access balcony. Any dwelling or room for residential purposes
sounddwellingflatsLaboratory Values for Airborne Sound Insulation in Dwellings
Table 2NI-wide·Technical Booklet G Resistance to the Passage of Sound
Airborne sound insulation (minimum values) Rw dB. Walls 40. Floors and stairs 40. Table 2 Laboratory values for new internal walls and floors within dwellings and rooms for residential purposes, wheth
sounddwellingflats