· building networs td 214 g6 airborne and impact sound 4 introduction this training module is...

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Building Networks Ltd © 2014 G6 Airborne and Impact Sound - 1 -

Compliance DocumentsTraining Series

G6 Airborne & Impact Sound


2 LBP skiLLs maintenance Points

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© 2014 Building Networks. All Rights Reserved.

No part of this work may be reproduced, adapted, modified, copied or transmitted in any form or by way of example only, written graphic, electronic, mechanical, reprographic, photocopying, recording, taping or information retrieval systems, without written permission of Building Networks Ltd.

Designed by Building Networks Ltd

Published: Version 1; October, 2009

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Content

Introduction

Symbols

Download Requirements

NZ Building Code Clause G6

Activities

Navigating Your Way Around the Compliance Document

References

Definitions

Verification Method

Acceptable Solution

Answers to Activities

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IntroductionThis training module is based on the Department of Building and Housing (DBH) Compliance Document G6 Airborne and Impact Sound, amendment 2 effective 1 December 1995.

The New Zealand Building Code clause G6 was first published in July 1992.A compliance document is for use in establishing compliance with the New Zealand Building Code. There are also other methods of compliance which are detailed in the New Zealand Building Code Handbook.

For the document history please refer to the inside cover of the document.

Symbols

Where you see the glasses symbol you are being asked to complete an activity using the Clause G6 Document.

Where you see the symbol you should pause to read this carefully as it is an important tip or note.

For this course you will need to download

• Compliance Document Clause G6 Airborne and Impact Sound from www.dbh.govt.nz

Activity 1

Tip

It is recommended that you make yourself familiar with the preface to the New Zealand Building Code Handbook that both describes the status of Compliance Documents and explains alternative methods of achieving compliance.

Tip

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NZ Building Code Clause G6 – Airborne and Impact Sound

All Compliance Documents commence with a copy of the relevant NZ Building Code clause.

Activity 1

All Compliance Documents commence with a copy of the relevant NZ Building Code

clause.

Review the NZBC clause for G6 [page 3 of the Document]

Q.1 What is the objective of clause G6?

[G6.1] _____________________________________________________

_____________________________________________________

_____________________________________________________

_____________________________________________________

_____________________________________________________

Q. 2 Fill in the blanks from the functional requirement:

[G6.2]

Building elements which are …………………… between occupancies, shall

be constructed to prevent undue noise …………………………………….from

other occupancies or common spaces, to the ……………………… ……………

of household units.

Q.3 Consider the performance requirements and answer the questions below:

[G6.3.1] The Sound Transmission Class of walls, floors and ceilings shall be no

less than what figure?

_____________________________________________________

[G6.3.2] Fill in the blanks below:

The Impact Insulation Class of …………………………..shall be no less than 55.

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Navigating Your Way Around the Compliance Document

The Compliance Document G6 Airborne and Impact Sound contains the following sections: [page 5]• References• Definitions• Verification Method G6/VM1• Acceptable Solution G6/AS1• An index

Activity 2

Refer to the References section of the G6 Document [page 7 ]

Q.1 There are five referenced documents quoted in Verification Method G6/VM1. Please note them below - the first has been done for you.

# Source and Standard(s) Description1 American Society for Testing and Materials

ASTM E 336: 1990

Method for measurement of airborne sound insulation in buildings.

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Definitions

An abbreviated list of definitions for words or terms particularly relevant to ComplianceDocument G6 are found on page 9 of the Document.

Activity 3

Go to the definitions section of G6 and familiarise yourself with the meaning of the following terms:

• Adequate

• Amenity

• Building

• Building element

• Fixture

• Habitable space

• Household unit

• Impact insulation class (IIC)

• Sound transmission class (STC)

Definitions for any other italicised word may be found in the NZ Building Code Handbook, which contains a full list of definitions. The Handbook can be downloaded from www.dbh.govt.nz If you do not understand any terms refer back to this reference point and look up the word in alphabetical order.

Tip

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Verification Method G6/VM1Sound Tests Performance Verification

Airborne Sound Insulation Field Tests

Procedures detailed inASTM E 366

The field sound transmission class may be verified using the described method in ASTM E 413.

Impact Sound Insulation Field Tests

Procedures detailed in ISO 140: Part VII

The field impact insulation class may be verified using the described method in ASTM E 989.

Acceptable Solution G6/AS1

Activity 4

Carefully read Acceptable Solution G6/AS1 [pages 13 – 17] and test your understanding with the exercises below:

Q.1 True or False? Please select the correct answer

(a) Sound transmitted through building elements can be minimised T/F

(b) Building elements can be used for noise control T/F

(c) It is best to mount fixtures such as TV sets on common walls T/F

(d) Unsealed air space can sometimes amplify sound T/F

(e) Carpet on underlay is an optional part of the Acceptable Solution T/F

(f) Additional airborne and impact sound insulation is sometimes required T/F

(g) Installations are made airtight by sealing joints between elements T/F

Shall be within 5 dB of the performance

requirement

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Q.2 Refer to Figure 1: Location of Building Elements Requiring Noise Control [page 14 of the Document]

Which wall assembly details should you refer to for two adjacent units?

(a) Numbers 1 and 2 (b) Numbers 1-5 inclusive

(c) Numbers 5-10 inclusive (d) Numbers 6 and 7

Q.3 Refer to Figure 2: Acceptable Wall Assemblies for Noise Control [page 15 of the Document] Detail 4 STC 55 requires what concrete wall minimum thickness?

(a) 400 mm (b) 150 mm

(c) 200 mm (d) 115 mm

Q.4 Refer to Figure 3: Acceptable Floor/Ceiling Assemblies for Noise Control [page 16 of the Document] Detail 5 STC 55 / IIC 55 requires how many layers of 12.5 mm plasterboard?

(a) 2 (b) 4

(c) 1 (d) none Q.5 Refer to Figure 4: Acceptable Internal/External Wall Junction for Noise Control Between Two Units [page 16 of the Document] Plan Detail D requires what thickness of glass fibre?

(a) 25 mm (b) 45 mm

(c) 75 mm (d) 52 mm

Q.6 Refer to Figure 5: Acceptable Floor/Wall Junctions for Noise Control Between Four Units [page 17 of the Document] Section Detail C requires what kind of sealant?

(a) rubber (b) multi layered

(c) flexible (d) water based

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Notes:

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Answers to Activities

Activity 1:

Q.1 What is the objective of clause G6? [G6.1]

ANSWER

The objective of this provision is to safeguard people from illness or loss of amenity as a result of undue noise being transmitted between abutting occupancies.

Q. 2 Fill in the blanks from the functional requirement:

ANSWER

[G6.2]

Building elements which are common between occupancies, shall

be constructed to prevent undue noise transmission from

other occupancies or common spaces, to the habitable spaces

of household units.

Q.3 Consider the performance requirements and answer the questions below: [G6.3.1] The Sound Transmission Class of walls, floors and ceilings shall be no less than what figure? ANSWER

55.

[G6.3.2] Fill in the blanks below:

ANSWER The Impact Insulation Class of floors shall be no less than 55.

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Activity 2:

Q.1 There are five referenced documents quoted in Verification Method G6/VM1. Please note them below - the first has been done for you.

# Source and Standard(s) Description1 American Society for Testing

and Materials

ASTM E 336: 1990

Method for measurement of airbornesound insulation in buildings.

2 American Society for Testing and Materials

ASTM E 413: 1987

Classification for rating sound insulation


ASTM E 492: 1990

Test method for laboratory measurement of impact sound transmission through floor-ceiling assemblies using the tapping machine


ASTM E 989: 1989

Classification for determination of impact insulation class (IIC)

5 International Standards Organisation

ISO 140/VII: 1978

Field measurements of impact sound insulation of floors

Activity 3:

Review as required.

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Activity 4:

Q.1 True or False? Please select the correct answer

ANSWER

(a) Sound transmitted through building elements can be minimised T

(b) Building elements can be used for noise control T

(c) It is best to mount fixtures such as TV sets on common walls F

(d) Unsealed air space can sometimes amplify sound T

(e) Carpet on underlay is an optional part of the Acceptable Solution F

(f) Additional airborne and impact sound insulation is sometimes required T

(g) Installations are made airtight by sealing joints between elements T

Q2. (b)

Q3. (b)

Q4. (a)

Q5. (c)

Q6. (c)

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Notes:

Building Networks NZ LtdPO Box 12463, Thorndon, Wellington Phone: (+64) 04 472 1702Email: [email protected]: www.buildingnetworks.co.nz


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