1684.2N1N2, F17_Seasoned Hardwood

AS 1684.2 N1/N2 Supp 82006

AS 1684.2 N1/N2 Supplement 82006

Residential timber-framed construction

Part 2: Non-cyclonic areas N1/N2 Supplement 8: Timber framing span tablesWind classification N1/N2Seasoned hardwoodStress Grade F17 (Supplement to AS 1684.22006)

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This Australian Standard Supplement was prepared by Committee TM-002, Timber Framing. It was approved on behalf of the Council of Standards Australia on 9 November 2005. This Supplement was published on 31 January 2006.

The following are represented on Committee TM-002:

A3P

Association of Consulting Engineers, Australia

Australian Building Codes Board

Building Research Association of New Zealand

CSIRO Manufacturing and infrastructures Technology

Engineered Wood Products Association of Australasia

Engineers Australia

Forest Industries Federation (WA)

Housing Industry Association

Master Builders, Australia

New Zealand Forest Industries Council

New Zealand Timber Industry Federation

Scion

South Australian Housing Trust

Structural Engineered Timber Manufactures Association, New Zealand

Timber and Building Materials Association, NSW

Timber Development Association, NSW

Timber Development Association of South Australia

Timber Queensland

Keeping Standards up-to-date

Standards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased.

Detailed information about Standards can be found by visiting the Standards Web Shop at www.standards.com.au and looking up the relevant Standard in the on-line catalogue.

Alternatively, the printed Catalogue provides information current at 1 January each year, and the monthly magazine, The Global Standard, has a full listing of revisions and amendments published each month.

Australian StandardsTM and other products and services developed by Standards Australia are published and distributed under contract by SAI Global, which operates the Standards Web Shop.

We also welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Contact us via email at [email protected], or write to the Chief Executive, Standards Australia, GPO Box 476, Sydney, NSW 2001.

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AS 1684.2 N1/N2 Supp 82006

AS 1684.2 N1/N2 Supplement 82006

Residential timber-framed construction

Part 2: Non-cyclonic areas N1/N2 Supplement 8: Timber framing span tablesWind classification N1/N2Seasoned hardwoodStress Grade F17 (Supplement to AS 1684.22006)

Originated as AS 1684 Supp 151975. Second edition 1992. Revised and redesignated as AS 1684.2 N1/N2 Supp 81999. Third edition 2006.

COPYRIGHT

Standards Australia

All rights are reserved. No part of this work may be reproduced or copied in any form or by

any means, electronic or mechanical, including photocopying, without the written

permission of the publisher.

Published by Standards Australia GPO Box 476, Sydney, NSW 2001, Australia

ISBN 0 7337 7107 6

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AS 1684.2 N1/N2 Supp. 8 - 1999 Wind classification N1/N2 - Seasoned hardwood - Stress grade F17

LIST OF TABLES

SINGLE OR UPPER STOREY

1 FLOOR BEARERS Supporting single or upper storey loadbearing walls FLW 12002 FLOOR BEARERS Supporting single or upper storey loadbearing walls FLW 24003 FLOOR BEARERS Supporting single or upper storey loadbearing walls FLW 36004 FLOOR BEARERS Supporting single or upper storey loadbearing walls FLW 48005 FLOOR BEARERS Supporting floor load only6 FLOOR JOISTS7 WALL STUDS Not notched single or upper storey8 WALL STUDS Notched 20 mm single or upper storey9 STUDS SUPPORTING CONCENTRATED LOADS Not notched10 STUDS SUPPORTING CONCENTRATED LOADS Notched to 20 mm11 JAMB STUDS Single or upper storey12 INTERNAL LOADBEARING WALL STUDS Not notched single or upper storey13 INTERNAL LOADBEARING WALL STUDS Notched to 20 mm single or upper storey14 BOTTOM PLATES - Supporting single or upper storey15 TOP PLATES Single or upper storey sheet roof16 TOP PLATES - Single or upper storey tile roof17 LINTELS Sheet roof Single or upper storey loadbearing walls18 LINTELS Tile roof Single or upper storey loadbearing walls19 LINTELS Sheet roof Supporting concentrated roof loads20 LINTELS Tile roof Supporting concentrated roof loads21 CEILING JOISTS Supporting ceiling loads, no overbatten22 CEILING JOISTS Supporting ceiling loads with overbatten23 HANGING BEAMS Supporting ceiling loads24 COUNTER BEAMS25 STRUTTING/HANGING BEAMS Supporting roof & ceiling loads26 STRUTTING/COUNTER BEAMS Supporting roof & ceiling loads27 STRUTTING BEAMS28 UNDERPURLINS29 RAFTERS OR PURLINS30 RIDGE OR INTERMEDIATE BEAMS Single span31 RIDGE OR INTERMEDIATE BEAMS Continuous span32 ROOF BATTENS Supporting roofing only

LOWER STOREY OF TWO STOREY

33 FLOOR BEARERS Supporting two storey loadbearing walls FLW 180034 FLOOR BEARERS Supporting two storey loadbearing walls FLW 360035 FLOOR BEARERS Lower Storey of two storey supporting upper and lower floor loads only36 WALL STUDS Not notched lower storey loadbearing walls37 WALL STUDS - Notched to 20 mm lower storey loadbearing walls38 STUDS Not notched Supporting concentrated floor loads39 STUDS Notched to 20 mm Supporting concentrated floor loads40 JAMB STUDS Lower storey of two storey FLW 180041 JAMB STUDS Lower storey of two storey FLW 360042 JAMB STUDS Lower storey of two storey FLW 480043 WALL STUDS - Not notched supporting floor loads only44 WALL STUDS - Notched to 20 mm supporting floor loads only45 BOTTOM PLATES Lower storey of two storey46 TOP PLATES Lower storey of two storey47 LINTELS Lower storey loadbearing walls Sheef roof48 LINTELS Lower storey loadbearing walls Tile roof

VERANDAHS, POSTS & DECKS

49 DECK BEARERS50 DECK JOISTS51 VERANDAH BEAMS Single span52 VERANDAH BEAMS Continuous span53 POSTS SUPPORTING ROOF AND/OR FLOOR LOADS

AS 1684.2 N1/N2 Supp 8 - 1999 Wind classification N1/N2 - Seasoned hardwood - Stress grade F17AS 1684.2 N1/N2 Supp 8 - 2006 Wind classification N1/N2 - Seasoned hardwood - Stress grade F17

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TABLE 1 FLOOR BEARERS - Floor load width 1200 mmSupporting single or upper storey loadbearing walls

1500 4500 7500 1500 4500 7500

Maximum Bearer Span (mm)Span Cantilever Span Cantilever Span Cantilever Span Cantilever Span Cantilever Span Cantilever

Single Span Continuous Span

Sheet Roof

Size DxB(mm)

Roof LoadWidth (mm)

Tile Roof

2/90x35 1500 400 1300 300 1200 300 2100 600 1800 500 1600 4002/90x45 1700 500 1400 400 1300 300 2300 650 2000 600 1800 500

2/120x35 2000 600 1800 500 1600 400 2800 800 2400 700 2200 6002/120x45 2200 600 1900 500 1700 500 3000 850 2600 700 2400 7002/140x35 2400 700 2100 600 1900 500 3200 900 2800 800 2500 7002/140x45 2600 700 2200 600 2000 600 3500 1000 3000 900 2700 8002/170x35 2900 800 2500 700 2300 600 3800 1100 3400 1000 3100 9002/170x45 3100 900 2700 800 2400 700 4100 1200 3700 1100 3300 9002/190x35 3200 900 2800 800 2500 700 4200 1200 3700 1100 3400 10002/190x45 3500 1000 3000 900 2700 800 4400 1300 4000 1200 3700 11002/240x35 3900 1100 3500 1000 3200 900 5000 1500 4500 1300 4100 12002/240x45 4200 1200 3800 1100 3400 1000 5300 1500 4700 1400 4400 13002/290x35 4500 1300 4100 1200 3800 1100 5700 1700 5100 1500 4700 14002/290x45 4800 1400 4300 1200 4000 1200 6100 1800 5400 1600 5000 1500

2/90x35 1400 400 1100 300 1000 300 1900 500 1500 400 1300 3002/90x45 1500 400 1200 300 1100 300 2000 600 1600 400 1400 400

2/120x35 1900 500 1500 400 1300 300 2500 700 2000 600 1800 5002/120x45 2000 600 1600 400 1400 400 2700 800 2200 600 1900 5002/140x35 2200 600 1700 500 1500 400 2900 800 2400 700 2100 6002/140x45 2300 600 1900 500 1700 500 3200 900 2600 700 2200 6002/170x35 2600 700 2100 600 1800 500 3600 1000 2900 800 2500 7002/170x45 2800 800 2300 600 2000 600 3800 1100 3100 900 2700 8002/190x35 2900 800 2400 700 2100 600 3900 1100 3200 900 2800 8002/190x45 3200 900 2600 700 2200 600 4100 1200 3500 1000 3000 9002/240x35 3700 1100 3000 900 2600 700 4600 1300 3900 1100 3500 10002/240x45 3900 1100 3200 900 2800 800 4900 1400 4200 1200 3800 11002/290x35 4200 1200 3600 1000 3100 900 5300 1500 4500 1300 4100 12002/290x45 4500 1300 3800 1100 3400 1000 5600 1600 4800 1400 4400 1300

NOTES:NOTES:NOTES:NOTES:NOTES:i) Maximum bearer spans supporting roof loads are based on the support of a maximum total sheet roof, framing and ceiling mass of 40 kg/m2 , a maximum

total tile roof, framing and ceiling mass of 90 kg/m2 and a maximum flooring mass of 40 kg/m2. For guidance on determination of roof mass refer toAppendix B.

ii) Cantilevers shall not exceed 50% of actual backspan.iii) Minimum bearing length = 50 mm at end supports and 100 mm at internal supports for continuous members.iv) Multiple members shall be nailed together as per Clause 2.3.v) For design parameters refer to Figure 4.6.vi) Where loadbearing walls are supported at right angles to bearer within the bearer span reference should be made to Clause 4.3.1.5.vii) Where bearers support roof point loads, reference should be made to Clause 4.3.1.6.


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1500 4500 7500 1500 4500 7500

Maximum Bearer Span (mm)Span Cantilever Span Cantilever Span Cantilever Span Cantilever Span Cantilever Span Cantilever


Sheet Roof

Size DxB(mm)

Roof LoadWidth (mm)

Tile Roof

2/90x35 1300 300 1200 300 1100 300 1800 500 1600 400 1500 4002/90x45 1400 400 1300 300 1200 300 1900 500 1800 500 1600 400

2/120x35 1800 500 1600 400 1500 400 2400 700 2200 600 2000 6002/120x45 1900 500 1700 500 1600 400 2600 700 2300 600 2200 6002/140x35 2000 600 1800 500 1700 500 2800 800 2500 700 2300 6002/140x45 2200 600 2000 600 1900 500 3000 900 2700 800 2500 7002/170x35 2500 700 2200 600 2100 600 3400 1000 3000 900 2800 8002/170x45 2700 800 2400 700 2300 600 3600 1000 3300 900 3100 9002/190x35 2800 800 2500 700 2300 600 3700 1100 3400 1000 3200 9002/190x45 3000 900 2700 800 2500 700 3900 1100 3700 1100 3400 10002/240x35 3500 1000 3200 900 2900 800 4400 1300 4100 1200 3900 11002/240x45 3700 1100 3400 1000 3200 900 4700 1400 4400 1300 4100 12002/290x35 4000 1200 3800 1100 3500 1000 5100 1500 4700 1400 4500 13002/290x45 4300 1200 4000 1200 3800 1100 5400 1600 5000 1500 4700 1400

2/90x35 1200 300 1000 300 NS NS 1700 500 1400 400 1300 3002/90x45 1300 300 1100 300 1000 300 1800 500 1500 400 1400 400

2/120x35 1600 400 1400 400 1200 300 2200 600 1900 500 1700 5002/120x45 1800 500 1500 400 1400 400 2400 700 2000 600 1800 5002/140x35 1900 500 1600 400 1500 400 2600 700 2200 600 2000 6002/140x45 2100 600 1800 500 1600 400 2800 800 2400 700 2100 6002/170x35 2300 600 2000 600 1800 500 3200 900 2700 800 2400 7002/170x45 2500 700 2100 600 1900 500 3400 1000 2900 800 2600 7002/190x35 2600 700 2200 600 2000 600 3500 1000 3000 900 2700 8002/190x45 2800 800 2400 700 2100 600 3800 1100 3200 900 2900 8002/240x35 3300 900 2800 800 2500 700 4200 1200 3700 1100 3400 10002/240x45 3500 1000 3000 900 2700 800 4500 1300 4000 1200 3600 10002/290x35 3900 1100 3300 900 3000 900 4900 1400 4300 1200 4000 12002/290x45 4100 1200 3600 1000 3300 900 5200 1500 4600 1300 4200 1200





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1500 4500 7500 1500 4500 7500

Maximum Bearer Span (mm)

Span Cantilever Span Cantilever Span Cantilever Span Cantilever Span Cantilever Span Cantilever


Sheet Roof

Size DxB(mm)

Roof LoadWidth (mm)

2/90x35 1200 300 1100 300 1000 300 1600 400 1500 400 1400 4002/90x45 1300 300 1200 300 1100 300 1700 500 1600 400 1500 400

2/120x35 1600 400 1500 400 1400 400 2100 600 2000 600 1900 5002/120x45 1700 500 1600 400 1500 400 2300 600 2100 600 2000 6002/140x35 1800 500 1700 500 1600 400 2400 700 2300 600 2200 6002/140x45 2000 600 1800 500 1700 500 2700 800 2500 700 2400 7002/170x35 2200 600 2100 600 1900 500 2900 800 2800 800 2600 7002/170x45 2400 700 2200 600 2100 600 3300 900 3000 900 2900 8002/190x35 2500 700 2300 600 2200 600 3300 900 3100 900 2900 8002/190x45 2700 800 2500 700 2300 600 3600 1000 3400 1000 3200 9002/240x35 3100 900 2900 800 2700 800 4100 1200 3800 1100 3700 11002/240x45 3400 1000 3100 900 3000 900 4300 1200 4100 1200 3900 11002/290x35 3700 1100 3500 1000 3300 900 4700 1400 4400 1300 4200 12002/290x45 4000 1200 3700 1100 3600 1000 5000 1500 4700 1400 4500 1300

Tile Roof2/90x35 1100 300 1000 300 NS NS 1500 400 1300 300 1200 3002/90x45 1200 300 1100 300 1000 300 1700 500 1400 400 1300 300

2/120x35 1500 400 1300 300 1200 300 2000 600 1800 500 1600 4002/120x45 1600 400 1400 400 1300 300 2200 600 1900 500 1800 5002/140x35 1700 500 1500 400 1400 400 2300 600 2100 600 1900 5002/140x45 1900 500 1700 500 1500 400 2600 700 2200 600 2000 6002/170x35 2100 600 1800 500 1700 500 2800 800 2500 700 2300 6002/170x45 2300 600 2000 600 1800 500 3100 900 2700 800 2500 7002/190x35 2400 700 2100 600 1900 500 3200 900 2800 800 2600 7002/190x45 2600 700 2200 600 2000 600 3500 1000 3000 900 2800 8002/240x35 3000 900 2600 700 2400 700 3900 1100 3500 1000 3200 9002/240x45 3200 900 2800 800 2600 700 4200 1200 3800 1100 3500 10002/290x35 3600 1000 3200 900 2900 800 4500 1300 4100 1200 3800 11002/290x45 3800 1100 3400 1000 3100 900 4800 1400 4400 1300 4100 1200





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1500 4500 7500 1500 4500 7500




Sheet Roof

Size DxB(mm)

Roof LoadWidth (mm)

Tile Roof

2/90x35 1100 300 1000 300 1000 300 1400 400 1300 300 1200 3002/90x45 1200 300 1100 300 1000 300 1500 400 1500 400 1400 400

2/120x35 1400 400 1300 300 1300 300 1800 500 1700 500 1700 5002/120x45 1600 400 1500 400 1400 400 2100 600 2000 600 1900 5002/140x35 1700 500 1600 400 1500 400 2100 600 2000 600 1900 5002/140x45 1800 500 1700 500 1600 400 2400 700 2300 600 2200 6002/170x35 2000 600 1900 500 1800 500 2600 700 2400 700 2300 6002/170x45 2200 600 2100 600 2000 600 2900 800 2800 800 2700 8002/190x35 2300 600 2100 600 2000 600 2900 800 2700 800 2600 7002/190x45 2500 700 2300 600 2200 600 3200 900 3100 900 3000 9002/240x35 2900 800 2700 800 2600 700 3600 1000 3500 1000 3300 9002/240x45 3100 900 2900 800 2800 800 4000 1200 3900 1100 3700 11002/290x35 3400 1000 3200 900 3100 900 4400 1300 4200 1200 4000 12002/290x45 3700 1100 3500 1000 3400 1000 4600 1300 4500 1300 4300 1200

2/90x35 1000 300 NS NS NS NS 1300 300 1200 300 1100 3002/90x45 1100 300 1000 300 NS NS 1500 400 1400 400 1300 300

2/120x35 1400 400 1200 300 1100 300 1800 500 1600 400 1500 4002/120x45 1500 400 1300 300 1200 300 2000 600 1800 500 1700 5002/140x35 1600 400 1400 400 1300 300 2000 600 1900 500 1700 5002/140x45 1700 500 1600 400 1400 400 2300 600 2100 600 2000 6002/170x35 1900 500 1800 500 1600 400 2500 700 2300 600 2100 6002/170x45 2100 600 1900 500 1800 500 2800 800 2600 700 2400 7002/190x35 2200 600 2000 600 1800 500 2800 800 2500 700 2300 6002/190x45 2400 700 2100 600 2000 600 3200 900 2900 800 2600 7002/240x35 2700 800 2500 700 2300 600 3500 1000 3200 900 3000 9002/240x45 3000 900 2700 800 2500 700 3900 1100 3600 1000 3300 9002/290x35 3300 900 3000 900 2700 800 4200 1200 3900 1100 3600 10002/290x45 3600 1000 3200 900 3000 900 4500 1300 4200 1200 3900 1100





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Size DxB(mm)

TABLE 5 FLOOR BEARERS - Supporting floor load onlyFloor Load Width (mm)

1200 1800 2400 3600 4800 6000



Single Span

Continuous Span

2/90x35 1800 500 1600 400 1400 400 1200 300 1100 300 1000 3002/90x45 2000 600 1700 500 1600 400 1300 300 1200 300 1100 300

2/120x35 2500 750 2100 600 1900 500 1700 500 1500 400 1400 4002/120x45 2700 800 2300 600 2100 600 1800 500 1600 400 1500 4002/140x35 2900 850 2500 750 2300 600 1900 500 1700 500 1600 4002/140x45 3100 900 2700 800 2500 750 2100 600 1900 500 1700 5002/170x35 3500 1050 3000 900 2700 800 2400 700 2100 600 1900 5002/170x45 3700 1100 3300 900 3000 900 2600 700 2300 600 2100 6002/190x35 3800 1100 3400 1000 3100 900 2600 700 2400 700 2200 6002/190x45 4000 1200 3600 1000 3300 900 2900 800 2600 700 2400 7002/240x35 4500 1300 4100 1200 3800 1100 3300 900 3000 900 2800 8002/240x45 4700 1400 4300 1200 4000 1200 3600 1000 3300 900 3000 9002/290x35 5100 1500 4700 1400 4400 1300 3900 1100 3600 1000 3300 9002/290x45 5400 1600 4900 1400 4600 1300 4200 1200 3800 1100 3600 1000

2/90x35 2300 550 2000 500 1800 450 1600 400 1400 400 1200 3502/90x45 2500 600 2200 550 2000 500 1800 450 1600 400 1400 400

2/120x35 3100 750 2700 650 2500 600 2200 550 1900 500 1700 4502/120x45 3400 800 3000 700 2700 650 2400 550 2100 550 1900 5002/140x35 3500 850 3200 750 2900 700 2500 600 2200 550 1900 5002/140x45 3800 950 3400 800 3100 750 2700 650 2500 600 2200 5502/170x35 4100 1050 3700 900 3400 850 3100 750 2700 650 2400 6502/170x45 4400 1150 3900 1000 3700 900 3300 800 3000 750 2700 7002/190x35 4500 1150 4000 1000 3700 950 3400 800 3000 750 2600 7002/190x45 4700 1250 4300 1100 4000 1000 3600 900 3300 800 3000 7502/240x35 5300 1450 4800 1250 4500 1150 4000 1000 3700 950 3300 8502/240x45 5700 1600 5100 1400 4700 1250 4300 1100 4000 1000 3800 9502/290x35 6100 1750 5500 1550 5100 1400 4600 1200 4300 1100 4000 10502/290x45 6500 1900 5900 1650 5500 1500 4900 1350 4600 1200 4300 1150

NOTES:NOTES:NOTES:NOTES:NOTES:i) Maximum bearer spans are based on the support of a maximum flooring mass of 40 kg/m2.ii) Cantilevers shall not exceed 50% of the actual backspan.iii) The bearer sizes given may support decks up to 1000 mm above ground. For bearers supporting decks over 1000 mm above ground, refer to Table 49.iv) Minimum bearing length = 50 mm at end supports and 100 mm at internal supports for continuous members.v) Multiple members shall be nailed together as per Clause 2.3.vi) For design parameters refer to Figure 4.7.


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Joist Spacing 600 mm

Joist Spacing 450 mm

TABLE 6 FLOOR JOISTSMay support loadbearing walls perpendicular to joists

Roof Load Width (mm)

0 1500 4500 7500 0 1500 4500 7500 0 1500 4500 7500 0 1500 4500 7500

Maximum Floor Joist Span (mm)Sheet Roof Tile Roof

Single Span Continuous Span Single Span Continuous SpanJoist Spacing 300 mm

Size DxB(mm)

70x35 1400 1400 1200 1000 1700 1700 1500 120070x45 1500 1500 1300 1100 2000 2000 1700 140090x35 1900 1900 1700 1400 2700 2700 2100 170090x45 2100 2100 1800 1600 2900 2900 2300 2000

120x35 2900 2800 2400 2100 3600 3600 3000 2600120x45 3300 3000 2600 2300 3900 3900 3300 2900140x35 3600 3300 2800 2500 4200 4200 3700 3200140x45 3800 3600 3100 2800 4500 4500 4000 3500170x35 4200 4000 3600 3200 4900 4900 4600 4100170x45 4400 4300 3900 3500 5200 5200 4900 4500190x35 4500 4500 4000 3700 5300 5300 5000 4600190x45 4800 4800 4400 4000 5600 5600 5400 5000240x35 5400 5400 5000 4700 6300 6300 6100 5700240x45 5800 5600 5300 5000 6700 6700 6500 6000290x45 6600 6400 6100 5900 7200 7200 7200 7100

1400 1300 NS NS 1700 1600 1100 NS1500 1400 1000 NS 2000 1800 1200 NS1900 1800 1300 1000 2700 2300 1500 12002100 2000 1400 1100 2900 2500 1700 14002900 2500 1900 1500 3600 3200 2300 19003300 2700 2100 1700 3900 3600 2600 21003600 3000 2300 1900 4200 3900 2900 23003800 3300 2600 2200 4500 4300 3200 26004200 3700 3000 2500 4900 4800 3700 31004500 4000 3300 2800 5200 5100 4100 35004600 4200 3400 2900 5300 5200 4300 36004800 4500 3800 3300 5600 5500 4700 40005400 5100 4500 4000 6300 6300 5400 48005800 5400 4800 4400 6700 6600 5700 52006600 6200 5600 5200 7200 7200 6700 6100

70x35 1200 1200 1000 NS 1400 1400 1200 100070x45 1300 1300 1100 1000 1500 1500 1400 110090x35 1600 1600 1400 1200 1900 1900 1700 140090x45 1800 1800 1500 1300 2100 2100 1900 1600

120x35 2200 2200 2000 1700 2600 2600 2600 2200120x45 2400 2400 2200 1900 2900 2900 2800 2400140x35 2600 2600 2400 2100 3200 3200 3100 2700140x45 2900 2900 2700 2400 3500 3500 3400 3000170x35 3300 3300 3100 2700 4000 4000 4000 3400170x45 3700 3700 3400 3000 4400 4500 4400 3800190x35 3800 3800 3500 3100 4600 4600 4500 4000190x45 4200 4200 3800 3500 5100 5100 4800 4400240x35 4900 4900 4500 4200 5700 5700 5500 5100240x45 5200 5200 4800 4600 6100 6100 5900 5400290x45 6000 5900 5600 5300 7000 7000 6800 6400

1200 1100 NS NS 1400 1400 NS NS1300 1200 NS NS 1500 1500 1000 NS1600 1500 1000 NS 1900 1900 1300 10001800 1700 1200 1000 2100 2100 1400 11002200 2200 1600 1300 2600 2600 1900 15002400 2400 1800 1400 2900 2900 2200 17002700 2600 1900 1600 3200 3200 2400 19002900 2800 2200 1800 3500 3500 2700 22003300 3200 2500 2100 4000 4000 3100 25003700 3500 2800 2400 4500 4500 3500 29003800 3700 2900 2400 4600 4600 3600 30004200 4000 3200 2700 5100 5000 4000 34004900 4700 3900 3400 5700 5700 4800 41005200 5000 4300 3700 6100 6000 5100 46006000 5700 5100 4700 7000 7000 6100 5500

70x35 1100 1100 NS NS 1300 1300 1100 NS70x45 1200 1200 1000 NS 1400 1400 1200 100090x35 1500 1500 1200 1000 1700 1700 1500 120090x45 1600 1600 1400 1100 1900 1900 1700 1400

120x35 2000 2000 1800 1500 2400 2400 2300 1900120x45 2200 2200 2000 1700 2600 2600 2500 2100140x35 2400 2400 2200 1900 2800 2800 2800 2300140x45 2700 2700 2400 2100 3100 3100 3100 2600170x35 3000 3000 2800 2400 3500 3500 3500 3000170x45 3300 3300 3000 2700 3900 3900 3900 3400190x35 3400 3400 3200 2800 4000 4000 4000 3500190x45 3700 3700 3500 3100 4400 4400 4400 3900240x35 4400 4400 4100 3700 5200 5200 5100 4700240x45 4800 4800 4500 4100 5600 5700 5400 5000290x45 5600 5600 5200 5000 6500 6500 6400 5900

1100 1000 NS NS 1300 1200 NS NS1200 1100 NS NS 1400 1300 1000 NS1500 1300 NS NS 1700 1700 1100 NS1600 1500 1000 NS 1900 1900 1200 10002000 1900 1400 1100 2400 2400 1700 13002200 2100 1500 1200 2600 2600 1900 15002400 2300 1700 1400 2800 2800 2100 17002700 2500 1900 1600 3100 3100 2300 19003000 2900 2200 1800 3500 3500 2700 22003300 3200 2500 2100 3900 3900 3100 25003400 3300 2600 2100 4000 4000 3200 26003800 3600 2900 2400 4400 4400 3600 29004400 4300 3500 3000 5200 5200 4300 36004800 4600 3800 3300 5600 5600 4700 41005600 5400 4700 4200 6500 6500 5600 5000

NOTES:i) Maximum floor joist spans supporting roof loads are based on the support of a maximum total sheet roof, framing and ceiling mass of 40 kg/m2, maximum total tile

roof, framing and ceiling mass of 90 kg/m2 and a maximum flooring mass of 40 kg/m2.

ii) A Roof Load Width of 0 shall be used for floor joist not supporting roof loads.iii) The sizes given in this table are not suitable where heavy point loads, except those allowed by Clause 4.3.2.4, are supported within the joist span.iv) For the lower storey of two storey construction, floor joists shall not support roof or upper floor loads within their span.v) Where the ends of joist do not support roof loads, the joist may cantilever 25% of the allowable single span for size used, except that the cantilever shall not exceed

50% of the actual backspan.vi) Joists crippled over supports shall be considered as single span joists. Refer Clause 2.7.5.4.vii) Where joist size D/B > 4 restraint may be required. Refer Clause 4.2.2.3.viii) For design parameters refer to Figure 4.9.


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TABLE 7 WALL STUDS - Not notched - single or upper storeyRafter / Truss Spacing (mm)

450 600 900 1200 450 600 900 1200

Maximum Roof Load Width (mm)Sheet Roof Tile Roof

Stud Spacing 450 mm

Stud Height(mm)

Size DxB(mm)

NOTESNOTESNOTESNOTESNOTESi) Maximum roof load widths are based on the support of a maximum total sheet roof, framing and ceiling mass of 40 kg/m2. and a maximum tile roof, framing and

ceiling mass of 90 kg/m2. For guidance on roof and ceiling mass refer to Appendix B.ii) Studs for internal non-loadbearing bracing walls and partitions (not carrying roof loads) shall be as per Clause 6.3.5.iii) Edge distances for some sheet bracing materials may require a minimum stud width of 45 mm for joining sheets.iv) For gable or skillion end studs (not supporting roof loads) refer Clause 6.3.2.5.v) Large stud sizes may be made up by vertical nail lamination as per Clause 2.4.vi) For design parameters refer to Figure 6.12.vii) All stud walls shall be nogged at not greater than 1350 mm centres.viii) Where studs are used for tie-down, the maximum tension load that can be imparted to the stud is 8.5kN per stud or laminate where they are nail laminated.

Stud Spacing 600 mm

70x35 2400 7500 7500 7500 7500 7500 7500 7500 75002700 7500 7500 7500 7500 7500 7500 7200 53003000 7500 7500 7500 7500 7500 7500 5200 3900

70x45 2400 7500 7500 7500 7500 7500 7500 7500 75002700 7500 7500 7500 7500 7500 7500 7500 70003000 7500 7500 7500 7500 7500 7500 6800 50003600 7500 7500 7100 5300 7300 5500 3500 2700

2/70x35 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 5900 4500

2/70x45 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 7500 58004200 6500 7500 6500 5500 6500 5500 3500 2500

90x35 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 6300 4800

90x45 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 7500 61004200 7500 7500 7500 6800 7500 7300 4700 3600

2/90x35 3600 7500 7500 7500 7500 7500 7500 7500 75004200 7500 7500 7500 7500 7500 7500 7500 6000

2/90x45 4200 7500 7500 7500 7500 7500 7500 7500 75004800 7500 7500 7500 7500 7500 7500 7500 5500

70x35 2400 7500 7500 7500 7500 7500 7500 7500 75002700 7500 7500 7500 7500 7500 7500 7200 53003000 7500 7500 7500 7200 7500 7500 5100 3800

70x45 2400 7500 7500 7500 7500 7500 7500 7500 75002700 7500 7500 7500 7500 7500 7500 7500 70003000 7500 7500 7500 7500 7500 7500 6600 5000

2/70x35 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 5900 4300

2/70x45 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 7500 5700

90x35 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 6300 4700

90x45 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 7500 6100

2/90x35 3600 7500 7500 7500 7500 7500 7500 7500 75004200 7500 7500 7500 7500 7500 7500 7500 5900

2/90x45 4200 7500 7500 7500 7500 7500 7500 7500 7500


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Stud Spacing 450 mm

TABLE 8 WALL STUDS - Notched 20mm - single or upper storeyRafter/Truss Spacing (mm)

450 600 900 1200 450 600 900 1200


Stud Height(mm)

Size DxB(mm)

NOTES:NOTES:NOTES:NOTES:NOTES:i) Maximum roof load widths are based on the support of a maximum total sheet roof, framing and ceiling mass of 40 kg/m2. and a maximum tile roof, framing and

ceiling mass of 90 kg/m2. For guidance on roof and ceiling mass refer to Appendix B.ii) Studs for internal non-loadbearing bracing walls and partitions (not carrying roof loads) shall be as per Clause 6.3.5.iii) Edge distances for some sheet bracing materials may require a minimum stud width of 45 mm for joining sheets.iv) For gable or skillion end studs (not supporting roof loads) refer Clause 6.3.2.5.v) Large stud sizes may be made up by vertical nail lamination as per Clause 2.4.vi) For design parameters refer to Figure 6.12.vii) All stud walls shall be nogged at not greater than 1350 mm centres.viii) Where studs are used for tie-down, the maximum tension load that can be imparted to the stud is 8.5kN per stud or laminate where they are nail laminated.ix) Notches for diagonal braces shall be per Clause 6.2.1.4.

Stud Spacing 600 mm

70x35 2400 7500 7500 7500 7500 7500 7500 6800 51002700 7500 7500 7500 7000 7500 7300 4800 36003000 7500 7500 6100 4500 6500 4900 3200 2400

70x45 2400 7500 7500 7500 7500 7500 7500 7500 66002700 7500 7500 7500 7500 7500 7500 6300 46003000 7500 7500 7500 6500 7500 6800 4400 33003600 7200 5500 3500 2700 3600 2800 1700 NS

2/70x35 2400 7500 7500 7500 7500 7500 7500 7500 75002700 7500 7500 7500 7500 7500 7500 7500 73003000 7500 7500 7500 7500 7500 7500 7100 53003600 7500 7500 7500 5600 7500 5800 3800 2900

2/70x45 2700 7500 7500 7500 7500 7500 7500 7500 75003000 7500 7500 7500 7500 7500 7500 7500 68003600 7500 7500 7500 7500 7500 7500 5200 3900

90x35 2700 7500 7500 7500 7500 7500 7500 7500 75003000 7500 7500 7500 7500 7500 7500 7500 62003600 7500 7500 7500 6000 7500 6900 4500 3500

90x45 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 5900 4500

2/90x35 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 7500 70004200 7500 7500 7500 7500 7500 7500 5800 4400

2/90x45 3600 7500 7500 7500 7500 7500 7500 7500 75004200 7500 7500 7500 7500 7500 7500 7500 56004800 7500 7500 7500 7500 7500 7500 5500 3500

70x35 2400 7500 7500 7500 7500 7500 7500 6800 51002700 7500 7500 7500 6200 7500 7100 4800 35003000 7500 7500 5200 3800 6000 4500 3000 2200

70x45 2400 7500 7500 7500 7500 7500 7500 7500 66002700 7500 7500 7500 7500 7500 7500 6200 46003000 7500 7500 7500 5800 7500 6700 4500 3300

2/70x35 2400 7500 7500 7500 7500 7500 7500 7500 75002700 7500 7500 7500 7500 7500 7500 7500 73003000 7500 7500 7500 7500 7500 7500 7000 52003600 7500 7500 6700 5000 7500 5800 3800 2900

2/70x45 2700 7500 7500 7500 7500 7500 7500 7500 75003000 7500 7500 7500 7500 7500 7500 7500 68003600 7500 7500 7500 7100 7500 7500 5100 3900

90x35 2700 7500 7500 7500 7500 7500 7500 7500 75003000 7500 7500 7500 7500 7500 7500 7500 62003600 7500 7500 6700 5000 7500 5900 3900 2900

90x45 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 5800 4300

2/90x35 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 7500 70004200 7500 7500 7500 7400 7500 7500 5600 4200

2/90x45 3600 7500 7500 7500 7500 7500 7500 7500 75004200 7500 7500 7500 7500 7500 7500 7400 5500


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TABLE 9 STUDS SUPPORTING CONCENTRATED LOADS - Not notchedStud Height (mm)

2400 2700 3000 3600 4200 4800 2400 2700 3000 3600 4200 4800

Maximum Roof Area Supported (m2)

Sheet Roof Tile Roof

Size DxB(mm)

TABLE 10 STUDS SUPPORTING CONCENTRATED LOADS - Notched to 20mmStud Height (mm)

2400 2700 3000 3600 4200 4800 2400 2700 3000 3600 4200 4800

Maximum Roof Area Supported (m2)


Size DxB(mm)

70x35 21 15 11 6 4 2 9 7 5 3 NS NS70x45 26 19 14 8 5 2 12 8 6 4 2 NS

2/70x35 40 31 22 13 8 4 18 13 10 6 3 22/70x45 40 39 30 16 10 6 24 17 13 7 5 23/70x35 40 40 34 19 12 8 27 19 15 8 5 23/70x45 40 40 40 25 15 10 32 25 19 11 7 4

90x35 40 34 24 13 8 6 19 14 10 6 4 290x45 40 40 32 17 11 6 25 18 13 8 5 2

2/90x35 40 40 40 28 17 10 39 30 20 12 7 42/90x45 40 40 40 35 22 15 40 37 28 15 10 63/90x35 40 40 40 39 28 15 40 40 33 18 11 83/90x45 40 40 40 40 33 20 40 40 39 24 14 10

70x35 14 10 7 4 3 NS 6 5 3 NS NS NS70x45 18 13 9 5 3 2 8 6 4 3 NS NS

2/70x35 27 20 15 8 5 2 12 9 7 4 3 NS2/70x45 32 25 19 11 7 4 16 12 8 5 3 23/70x35 40 32 23 13 8 4 18 13 10 6 3 23/70x45 40 39 30 16 10 6 24 17 13 7 5 2

90x35 30 23 17 10 6 4 14 10 8 4 3 290x45 40 32 23 13 8 4 18 13 10 6 3 2

2/90x35 40 40 36 20 13 8 28 20 15 9 6 42/90x45 40 40 40 27 16 10 33 26 19 11 7 43/90x35 40 40 40 31 19 10 40 33 24 13 8 63/90x45 40 40 40 38 26 15 40 40 31 17 10 6


ceiling mass of 90 kg/m2. For guidance on roof and ceiling mass refer to Appendix B.ii) Where studs supporting concentrations of load occur in external walls, they shall be installed in addition to common studs.iii) For studs supporting hanging beams, the area supported shall be one half of the ceiling area supported by the beam and the size determined fromthe sheet roof

section.iv) Large stud sizes may be made up by vertical nail lamination as per Clause 2.4.v) For design parameters refer to Figure 6.13.vi) Where studs are used for tie-down, the maximum tension load that can be imparted to the stud is 8.5kN per stud or laminate where they are nail laminated.


ceiling mass of 90 kg/m2. For guidance on roof and ceiling mass refer to Appendix B.ii) Where studs supporting concentrations of load occur in external walls, they shall be installed in addition to common studs.iii) For studs supporting hanging beams, the area supported shall be one half of the ceiling area supported by the beam and the size determined fromthe sheet roof

section.iv) Large stud sizes may be made up by vertical nail lamination as per Clause 2.4.v) For design parameters refer to Figure 6.13.vi) Where studs are used for tie-down, the maximum tension load that can be imparted to the stud is 8.5kN per stud or laminate where they are nail laminated.


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TABLE 11 JAMB STUDS - Single or upper storeyRoof Load Width (mm)

1500 3000 4500 6000 7500 1500 3000 4500 6000 7500

Maximum Width of Opening (mm)Sheet Roof Tile Roof

Stud Height(mm)

Size DxB(mm)

Continued next page...

70x35 2400 3000 2600 2100 1700 1400 2900 2000 1500 1100 NS2700 1800 1800 1500 1300 1000 1800 1500 1000 NS NS3000 1000 1000 1000 NS NS 1000 1000 NS NS NS

70x45 2400 4100 3600 2700 2300 1800 4000 2700 2000 1600 12002700 2600 2600 2100 1700 1500 2600 2100 1500 1100 NS3000 1600 1600 1500 1300 1100 1600 1400 1100 NS NS

2/70x35 2400 4500 4500 4500 3900 3200 4500 4500 3500 2700 22002700 4500 4500 3700 3000 2500 4500 3600 2600 2100 16003000 3000 3000 2900 2300 1900 3000 2900 2100 1600 12003600 1000 1000 1000 1000 1000 1000 1000 1000 900 NS

2/70x45 2400 4500 4500 4500 4500 4200 4500 4500 4500 3600 29002700 4500 4500 4500 3900 3300 4500 4500 3500 2800 22003000 4100 4100 3800 3100 2600 4100 3800 2800 2200 17003600 1600 1600 1600 1600 1600 1600 1600 1600 1300 1000

3/70x35 2400 4500 4500 4500 4500 4500 4500 4500 4500 4300 35002700 4500 4500 4500 4500 3900 4500 4500 4300 3300 27003000 4500 4500 4500 3700 3100 4500 4500 3400 2600 21003600 2000 2000 2000 2000 1900 2000 2000 1900 1600 1300

3/70x45 2400 4500 4500 4500 4500 4500 4500 4500 4500 4500 45002700 4500 4500 4500 4500 4500 4500 4500 4500 4400 36003000 4500 4500 4500 4500 4100 4500 4500 4400 3500 28003600 2800 2800 2800 2800 2700 2800 2800 2800 2300 18004200 1100 1100 1100 1100 1100 1100 1100 1100 1100 1000

4/70x35 2400 4500 4500 4500 4500 4500 4500 4500 4500 4500 45002700 4500 4500 4500 4500 4500 4500 4500 4500 4500 38003000 4500 4500 4500 4500 4300 4500 4500 4500 3600 30003600 2900 2900 2900 2900 2800 2900 2900 2800 2400 19004200 1200 1200 1200 1200 1200 1200 1200 1200 1200 1100

4/70x45 2700 4500 4500 4500 4500 4500 4500 4500 4500 4500 45003000 4500 4500 4500 4500 4500 4500 4500 4500 4500 40003600 4000 4000 4000 4000 3800 4000 4000 3900 3200 26004200 1800 1800 1800 1800 1800 1800 1800 1800 1800 1700

90x35 2400 4500 4500 4300 3500 3100 4500 4300 3300 2600 22002700 4500 4200 3300 2700 2400 4500 3300 2500 2000 16003000 3300 3200 2600 2200 1800 3300 2500 1900 1500 13003600 1100 1100 1100 1100 1000 1200 1100 1000 NS NS

90x45 2400 4500 4500 4500 4500 4000 4500 4500 4300 3500 29002700 4500 4500 4400 3600 3100 4500 4400 3300 2600 22003000 4400 4300 3500 2900 2500 4400 3500 2600 2100 17003600 1700 1700 1700 1700 1500 1700 1700 1500 1300 1000

2/90x35 2400 4500 4500 4500 4500 4500 4500 4500 4500 4500 45002700 4500 4500 4500 4500 4500 4500 4500 4500 4500 38003000 4500 4500 4500 4500 4200 4500 4500 4500 3600 30003600 3100 3100 3100 3000 2800 3100 3100 2900 2400 19004200 1300 1300 1300 1300 1300 1300 1300 1300 1300 1100

2/90x45 2700 4500 4500 4500 4500 4500 4500 4500 4500 4500 45003000 4500 4500 4500 4500 4500 4500 4500 4500 4500 39003600 4300 4300 4300 4200 3700 4300 4300 3900 3200 26004200 1900 1900 1900 1900 1900 1900 1900 1900 1900 1700

3/90x35 3000 4500 4500 4500 4500 4500 4500 4500 4500 4500 45003600 4500 4500 4500 4500 4400 4500 4500 4500 3800 32004200 2400 2400 2400 2400 2400 2400 2400 2400 2400 21004800 900 900 900 900 900 900 900 900 900 900

3/90x45 3000 4500 4500 4500 4500 4500 4500 4500 4500 4500 45003600 4500 4500 4500 4500 4500 4500 4500 4500 4500 42004200 3300 3300 3300 3300 3300 3300 3300 3300 3300 30004800 900 900 900 900 900 900 900 900 900 900


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NOTES:NOTES:NOTES:NOTES:NOTES:i) Maximum Widths of Openings are based on the support of a maximum total sheet roof, framing and ceiling mass of 40 kg/m2 and a maximum total tile roof, framing

and ceiling mass of 90 kg/m2. For guidance on roof and ceiling mass refer to Appendix B.ii) Where jamb studs are required to support lintels that in turn support concentrated loads, additional jamb studs may be required - refer Clause 6.3.2.3.iii) A secondary jamb stud may form part of the total number of common studs required at the side of the opening.iv) Multiple jamb studs shall be nailed together as per Clause 2.4.v) For design parameters refer to Figure 6.14.vi) Not to be notched except as per Clause 6.2.1.4.vii) Mullion sizes shall be determined as per Clause 6.3.2.6.viii) Where studs are used for tie-down, the maximum tension load that can be imparted to the stud is 8.5kN per stud or laminate where they are nail laminated.

4/90x35 3000 4500 4500 4500 4500 4500 4500 4500 4500 4500 45003600 4500 4500 4500 4500 4500 4500 4500 4500 4500 44004200 3400 3400 3400 3400 3400 3400 3400 3400 3400 31004800 900 900 900 900 900 900 900 900 900 900

4/90x45 3600 4500 4500 4500 4500 4500 4500 4500 4500 4500 45004200 4500 4500 4500 4500 4500 4500 4500 4500 4500 41004800 1800 1800 1800 1800 1800 1800 1800 1800 1800 1800

TABLE 11 (cont) JAMB STUDS - Single or upper storeyRoof Load Width (mm)

1500 3000 4500 6000 7500 1500 3000 4500 6000 7500

Maximum Width of Opening (mm)Sheet Roof Tile Roof

Stud Height(mm)

Size DxB(mm)


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TABLE 12 INTERNAL LOADBEARING WALL STUDSNot notched single or upper storey

Rafter / Truss Spacing (mm)

450 600 900 1200 450 600 900 1200


Stud Spacing 450 mm

Stud Height(mm)

Size DxB(mm)

Stud Spacing 600 mm

70x35 2400 7500 7500 7500 7500 7500 7500 7500 75002700 7500 7500 7500 7500 7500 7500 7200 53003000 7500 7500 7500 7500 7500 7500 5200 3900

70x45 2400 7500 7500 7500 7500 7500 7500 7500 75002700 7500 7500 7500 7500 7500 7500 7500 70003000 7500 7500 7500 7500 7500 7500 6800 50003600 7500 7500 7300 5400 7300 5500 3500 2700

2/70x35 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 5900 4500

2/70x45 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 7500 5800

90x35 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 6300 4800

90x45 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 7500 61004200 7500 7500 7500 7500 7500 7300 4700 3600

2/90x35 3600 7500 7500 7500 7500 7500 7500 7500 75004200 7500 7500 7500 7500 7500 7500 7500 6000

2/90x45 4200 7500 7500 7500 7500 7500 7500 7500 75004800 7500 7500 7500 7500 7500 7500 7500 5500

70x35 2400 7500 7500 7500 7500 7500 7500 7500 75002700 7500 7500 7500 7500 7500 7500 7200 53003000 7500 7500 7500 7500 7500 7500 5100 3800

70x45 2400 7500 7500 7500 7500 7500 7500 7500 75002700 7500 7500 7500 7500 7500 7500 7500 70003000 7500 7500 7500 7500 7500 7500 6600 5000

2/70x35 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 5900 4300

2/70x45 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 7500 5700

90x35 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 6300 4700

90x45 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 7500 6100

2/90x35 3600 7500 7500 7500 7500 7500 7500 7500 75004200 7500 7500 7500 7500 7500 7500 7500 5900

2/90x45 4200 7500 7500 7500 7500 7500 7500 7500 7500

NOTESNOTESNOTESNOTESNOTESi) Maximum Roof Load Widths are based on the support of a maximum total sheet roof, framing and ceiling mass of 40 kg/m2 and a maximum total tile roof, framing

and ceiling mass of 90 kg/m2. For guidance on roof and ceiling mass refer to Appendix B.ii) Studs for internal non-loadbearing bracing walls and partitions (not carrying roof loads) shall be as per Clause 6.3.5.iii) Edge distances for some sheet bracing materials may require a minimum stud width of 45 mm for joining sheets.iv) Jamb studs for opening in internal load bearing walls shall be as per Table 10.v) Large stud sizes may be made up by vertical nail lamination as per Clause 2.4.vi) For design parameters refer to Figure 6.1.4.vii) Where roof loads are supported only on studs supporting concentrated loads, posts or jamb studs, the internal walls can be classified as non-loadbearing walls.

Refer Clause 6.3.5.viii) Where studs are used for tie-down, the maximum tension load that can be imparted to the stud is 8.5kN per stud or laminate where they are nail laminated.


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TABLE 13 INTERNAL LOADBEARING WALL STUDSNotched to 20mm - single or upper storey

Rafter / Truss Spacing (mm)

450 600 900 1200 450 600 900 1200


Stud Spacing 450 mm

Stud Height(mm)

Size DxB(mm)

NOTES:NOTES:NOTES:NOTES:NOTES:i) Maximum Roof Load Widths are based on the support of a maximum total sheet roof, framing and ceiling mass of 40 kg/m2 and a maximum total tile roof, framing

and ceiling mass of 90 kg/m2. For guidance on roof and ceiling mass refer to Appendix B.ii) Studs for internal non-loadbearing bracing walls and partitions (not carrying roof loads) shall be as per Clause 6.3.5.iii) Edge distances for some sheet bracing materials may require a minimum stud width of 45 mm for joining sheets.iv) Jamb studs for opening in internal load bearing walls shall be as per Table 11.v) Large stud sizes may be made up by vertical nail lamination as per Clause 2.4.vi) For design parameters refer to Figure 6.15.vii) Where roof loads are supported only on studs supporting concentrated loads, posts or jamb studs, the internal walls can be classified as non-loadbearing walls.

Refer Clause 6.3.5.viii) Notches for diagonal braces shall be as per Clause 6.2.1.4.ix) Where studs are used for tie-down, the maximum tension load that can be imparted to the stud is 8.5kN per stud or laminate where they are nail laminated.

Stud Spacing 600 mm

70x35 2400 7500 7500 7500 7500 7500 7500 6800 51002700 7500 7500 7500 7500 7500 7300 4800 36003000 7500 7500 6400 4800 6500 4900 3200 2400

70x45 2400 7500 7500 7500 7500 7500 7500 7500 66002700 7500 7500 7500 7500 7500 7500 6300 46003000 7500 7500 7500 7000 7500 6800 4400 33003600 7000 5200 3600 2700 3600 2800 1700 NS

2/70x35 2400 7500 7500 7500 7500 7500 7500 7500 75002700 7500 7500 7500 7500 7500 7500 7500 73003000 7500 7500 7500 7500 7500 7500 7100 53003600 7500 7500 7500 5900 7500 5800 3800 2900

2/70x45 2700 7500 7500 7500 7500 7500 7500 7500 75003000 7500 7500 7500 7500 7500 7500 7500 68003600 7500 7500 7500 7500 7500 7500 5200 3900

90x35 2700 7500 7500 7500 7500 7500 7500 7500 75003000 7500 7500 7500 7500 7500 7500 7500 62003600 7500 7500 7500 7300 7500 6900 4600 3500

90x45 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 6000 45004200 7500 6500 5500 3500 6500 3500 1500 1500

2/90x35 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 7500 70004200 7500 7500 7500 7500 7500 7500 5800 4400

2/90x45 3600 7500 7500 7500 7500 7500 7500 7500 75004200 7500 7500 7500 7500 7500 7500 7500 56004800 7500 7500 7500 7500 7500 7500 5500 3500

70x35 2400 7500 7500 7500 7500 7500 7500 6800 51002700 7500 7500 7500 7500 7500 7200 4800 35003000 7500 7500 6300 4800 6400 4800 3200 2400

70x45 2400 7500 7500 7500 7500 7500 7500 7500 66002700 7500 7500 7500 7500 7500 7500 6200 46003000 7500 7500 7500 6900 7500 6800 4400 3300

2/70x35 2400 7500 7500 7500 7500 7500 7500 7500 75002700 7500 7500 7500 7500 7500 7500 7500 73003000 7500 7500 7500 7500 7500 7500 7000 52003600 7500 7500 7500 5800 7500 5800 3800 2900

2/70x45 2700 7500 7500 7500 7500 7500 7500 7500 75003000 7500 7500 7500 7500 7500 7500 7500 68003600 7500 7500 7500 7500 7500 7500 5100 3900

90x35 2700 7500 7500 7500 7500 7500 7500 7500 75003000 7500 7500 7500 7500 7500 7500 7500 62003600 7500 7500 7500 7200 7500 6800 4500 3400

90x45 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 5900 4500

2/90x35 3000 7500 7500 7500 7500 7500 7500 7500 75003600 7500 7500 7500 7500 7500 7500 7500 70004200 7500 7500 7500 7500 7500 7500 5800 4200

2/90x45 3600 7500 7500 7500 7500 7500 7500 7500 75004200 7500 7500 7500 7500 7500 7500 7400 5500


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TABLE 14 BOTTOM PLATES - Supporting single or upper storeyRafter / Truss Spacing (mm)

450 600 900 1200 450 600 900 1200

Maximum Roof Load Width (mm)


Joist Spacing(mm)

Size DxB(mm)

NOTES:NOTES:NOTES:NOTES:NOTES:i) Maximum Roof Load Widths are based on the support of a maximum total sheet roof, framing and ceiling mass of 40 kg/m2 and a maximum total tile roof, framing

and ceiling mass of 90 kg/m2. For guidance on roof and ceiling mass refer to Appendix B.ii) Where the bottom plate is continuously supported by a concrete slab or solid nogging or where wall studs are directly in line with floor joist, the bottom plate may be

a minimum of 35 mm deep.iii) Where bottom plates support studs supporting concentrated loads, posts or jamb studs, the load shall be supported directly over a floor joist or over solid blocking

between plate and bearer.iv) Plates may be trenched up to a maximum of 3 mm.v) Multiple plates shall be nailed together as per Clause 2.5.vi) For design parameters refer to Figure 6.18.

35x70 300 7500 7500 7500 6800 7500 7100 4700 3600450 7500 7500 7100 4300 7500 5600 3300 2400600 7500 7500 4600 3100 5500 4000 2200 NS

45x70 300 7500 7500 7500 7500 7500 7500 7000 5600450 7500 7500 7500 7500 7500 7500 5600 4400600 7500 7500 7500 6400 7500 7500 4400 3000

2/35x70 300 7500 7500 7500 7500 7500 7500 7500 7300450 7500 7500 7500 7500 7500 7500 6900 5500600 7500 7500 7500 6300 7500 7500 4100 2800

2/45x70 450 7500 7500 7500 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500 7500 7500 6000

3/35x70 450 7500 7500 7500 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500 7500 6200 4200

3/45x70 600 7500 7500 7500 7500 7500 7500 7500 750035x90 300 7500 7500 7500 7500 7500 7500 6500 5000

450 7500 7500 7500 6200 7500 7400 4200 3200600 7500 7500 6000 4200 6900 5100 2700 1900

45x90 300 7500 7500 7500 7500 7500 7500 7500 6900450 7500 7500 7500 7500 7500 7500 7300 5500600 7500 7500 7500 7500 7500 7500 5500 3800

2/35x90 300 7500 7500 7500 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500 7500 7500 7200600 7500 7500 7500 7500 7500 7500 5300 3700

2/45x90 600 7500 7500 7500 7500 7500 7500 7500 75003/35x90 450 7500 7500 7500 7500 7500 7500 7500 7500

600 7500 7500 7500 7500 7500 7500 7500 54003/45x90 600 7500 7500 7500 7500 7500 7500 7500 7500


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TABLE 15 TOP PLATES - Sheet roof - Single or upper storeyRafter/Truss Spacing (mm)

600 900 1200

0 600 900 1200 1800 0 600 900 1200 1800 0 600 900 1200 1800

Maximum Roof Load Width (mm)Stud

Spacing(mm)

Size DxB(mm)

Tie-down Spacing (mm)

NOTES:i) Maximum roof load widths are based on the support of a maximum total sheet roof, framing and ceiling mass of 40 kg/m2. For guidance on roof and ceiling mass

refer to Appendix B.ii) Where rafters or trusses are supported directly over studs or within 1.5 times the thickness of the top plate from the studs the top plate may be a minimum 35 mm

deep.iii) Where plates support concentrated loads such as roof beams, struts, strutting beams, hanging beams, counter beams, combined strutting/hanging beams or girder

trusses etc., the load shall be supported directly over a stud(s) designed to carry the load or the plate stiffened in accordance with Clause 6.2.2.3.iv) Plates may be trenched up to a maximum of 3 mm for studs.v) Multiple plates shall be nailed together as per Clause 2.5.vi) For design parameters refer to Figure 6.19.vii) Where wind uplift forces on rafters or trusses are taken to the substructure, bypassing the top plate, the top plate size may be determined using the tie-down spacing

of 0 in the table.

35x70 300 7500 7500 7500 7500 5200450 7500 7500 7500 7500 4900600 7500 7500 7500 7500 4700

45x70 300 7500 7500 7500 7500 7400450 7500 7500 7500 7500 7200600 7500 7500 7500 7500 7100

2/35x70 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

2/45x70 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

3/35x70 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

3/45x70 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

35x90 300 7500 7500 7500 7500 5900450 7500 7500 7500 7500 5700600 7500 7500 7500 7500 5500

45x90 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

2/35x90 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

2/45x90 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

3/35x90 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

3/45x90 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

7500 7500 7500 7500 58007000 7000 7000 7000 55004600 4600 4600 4600 46007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 73007500 7500 7500 7500 70006000 6000 6000 6000 60007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 7500

6600 6600 6600 6600 43004000 4000 4000 4000 38003100 3100 3100 3100 31007500 7500 7500 7500 59007500 7500 7500 7500 56006500 6500 6500 6500 53007500 7500 7500 7500 75007500 7500 7500 7500 75006200 6200 6200 6200 62007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 51006200 6200 6200 6200 48004100 4100 4100 4100 41007500 7500 7500 7500 74007500 7500 7500 7500 71007500 7500 7500 7500 68007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 7500


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TABLE 16 TOP PLATES - Tile roof - Single or upper storeyRafter/Truss Spacing (mm)

450 600 900

0 600 900 1200 1800 0 600 900 1200 1800 0 600 900 1200 1800

Maximum Roof Load Width (mm)Stud

Spacing(mm)

Size DxB(mm)

Tie-down Spacing (mm)

NOTES:i) Maximum roof load widths are based on the support of a maximum total tile roof, framing and ceiling mass of 90 kg/m2. For guidance on roof and ceiling mass refer

to Appendix B.ii) Where rafters or trusses are supported directly over studs or within 1.5 times the thickness of the top plate from the studs the top plate may be a minimum 35 mm

deep.iii) Where plates support concentrated loads such as roof beams, struts, strutting beams, hanging beams, counter beams, combined strutting/hanging beams or girder

trusses etc., the load shall be supported directly over a stud(s) designed to carry the load or the plate stiffened in accordance with Clause 6.2.2.3.iv) Plates may be trenched up to a maximum of 3 mm for studs.v) Multiple plates shall be nailed together as per Clause 2.5.vi) For design parameters refer to Figure 6.19.vii) Where wind uplift forces on rafters or trusses are taken to the substructure, bypassing the top plate, the top plate size may be determined using the tie-down spacing

of 0 in the table.

35x70 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 5500 5500 5500 5500 5500

45x70 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

2/35x70 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

2/45x70 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

3/35x70 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

3/45x70 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

35x90 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7000 7000 7000 7000 7000

45x90 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

2/35x90 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

2/45x90 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

3/35x90 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

3/45x90 300 7500 7500 7500 7500 7500450 7500 7500 7500 7500 7500600 7500 7500 7500 7500 7500

6700 6700 6700 6700 67005800 5800 5800 5800 58004000 4000 4000 4000 40007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75005100 5100 5100 5100 51007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 7500

4700 4700 4700 4700 47003400 3400 3400 3400 34002100 2100 2100 2100 21006900 6900 6900 6900 69005600 5600 5600 5600 56004500 4500 4500 4500 45007500 7500 7500 7500 75006800 6800 6800 6800 68004100 4100 4100 4100 41007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75006200 6200 6200 6200 62007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75006300 6300 6300 6300 63004300 4300 4300 4300 43002700 2700 2700 2700 27007500 7500 7500 7500 75007200 7200 7200 7200 72005600 5600 5600 5600 56007500 7500 7500 7500 75007500 7500 7500 7500 75005400 5400 5400 5400 54007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 75007500 7500 7500 7500 7500


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TABLE 17 LINTELS - Sheet roof - single or upper storey loadbearing wallsRoof Load Width (mm)

1500 3000 4500 6000 7500

600 1200 600 1200 600 1200 600 1200 600 1200

Maximum Lintel Span (mm)

Rafter/Truss Spacing (mm)

Size DxB (mm)

90x35 2000 2000 1600 1500 1400 1200 1300 1100 1200 10002/90x35 2400 2500 1900 1900 1700 1600 1500 1400 1400 1300

90x45 2200 2200 1700 1700 1500 1400 1400 1200 1300 11002/90x45 2600 2700 2100 2100 1800 1800 1600 1600 1500 1400120x35 2600 2600 2000 2000 1800 1700 1600 1500 1500 1400

2/120x35 3100 3100 2500 2600 2200 2200 2000 2000 1800 1800120x45 2800 2800 2200 2200 1900 1900 1700 1700 1600 1500

2/120x45 3300 3200 2700 2700 2400 2400 2200 2200 2000 2000140x35 2900 2900 2300 2400 2100 2000 1800 1800 1700 1700

2/140x35 3400 3400 2900 2900 2500 2600 2300 2300 2100 2100140x45 3100 3100 2500 2600 2200 2200 2000 2000 1900 1900

2/140x45 3600 3600 3100 3100 2700 2800 2500 2600 2300 2300170x35 3400 3400 2800 2800 2500 2500 2200 2200 2100 2000

2/170x35 4000 3900 3400 3300 3000 3000 2800 2800 2600 2700170x45 3600 3500 3000 3000 2700 2700 2400 2400 2200 2200

2/170x45 4200 4200 3600 3500 3200 3200 3000 3000 2800 2800190x35 3600 3600 3100 3100 2700 2800 2500 2500 2300 2300

2/190x35 4300 4300 3600 3600 3300 3300 3100 3100 2900 2900190x45 3900 3800 3300 3300 3000 3000 2700 2700 2500 2500

2/190x45 4500 4500 3900 3800 3500 3500 3300 3200 3100 3100240x35 4300 4300 3700 3600 3300 3300 3100 3100 2900 2900

2/240x35 5100 5100 4300 4300 3900 3900 3600 3600 3500 3400240x45 4600 4600 3900 3900 3500 3500 3300 3300 3100 3100

2/240x45 5300 5300 4600 4600 4200 4200 3900 3900 3700 36002/290x35 5800 5800 5000 4900 4500 4500 4200 4200 4000 4000

290x45 5300 5300 4500 4500 4100 4000 3800 3800 3600 35002/290x45 6100 6100 5200 5200 4800 4800 4500 4400 4200 4200

NOTES:NOTES:NOTES:NOTES:NOTES:i) Maximum Lintel Spans are based on the support of a maximum total sheet roof, framing and ceiling mass of 40 kg/m2. For guidance on roof and ceiling mass refer

to Appendix B.ii) For lintels supporting concentrated loads refer Table 20.iii) Lintels to internal wall openings supporting ceiling joist only shall be sized as hanging beams.iv) Lintels in gable or skillion end walls not supporting roof loads shall be determined as per Clause 6.3.6.3.v) Minimum bearing length = 35 mm at end supports. Subscript values indicate the minimum additional bearing length where required to be greater than 35 mm.vi) Multiple members shall be nailed together as per Clause 2.3.vii) For design parameters refer to Figure 6.20.viii) Lintels must be used in conjunction with top plates, ledgers and head trimmers.ix) When lintels are used to their maximum design limits, deflections of up to 10 mm (deadload) or 15mm (live load) may be expected.


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TABLE 18 LINTELS - Tile roof - single or upper storey loadbearing wallsRoof Load Width (mm)

1500 3000 4500 6000 7500

600 1200 600 1200 600 1200 600 1200 600 1200

Maximum Lintel Span (mm)

Rafter/Truss Spacing (mm)

Size DxB (mm)

90x35 1600 1400 1300 1000 1100 800 1000 700 900 6002/90x35 1900 1900 1500 1300 1300 1100 1200 900 1100 800

90x45 1600 1600 1400 1100 1100 900 1000 800 1000 7002/90x45 2000 2000 1600 1500 1400 1200 1300 1000 1200 900120x35 2000 2000 1600 1400 1400 1200 1200 1000 1100 900

2/120x35 2400 2500 1900 1900 1700 1600 1500 1400 1400 1200120x45 2100 2100 1700 1600 1500 1300 1400 1100 1200 1000

2/120x45 2600 2700 2100 2100 1800 1800 1600 1600 1500 1400140x35 2200 2300 1800 1800 1600 1400 1400 1200 1300 1100

2/140x35 2800 2800 2200 2200 1900 1900 1800 1700 1600 1500140x45 2400 2500 1900 1900 1700 1600 1500 1400 1400 1300

2/140x45 3000 3000 2400 2400 2100 2100 1900 1900 1800 1700170x35 2700 2700 2200 2100 1900 1900 1700 1600 1600 1500

2/170x35 3300 3200 2700 2700 2300 2300 2100 2100 2000 2000170x45 2900 2900 2300 2300 2000 2000 1800 1800 1700 1600

2/170x45 3500 3400 2900 2900 2500 2600 2300 2300 2200 2100190x35 3000 3000 2400 2400 2100 2100 1900 1900 1700 1700

2/190x35 3500 3500 3000 3000 2600 2700 2400 2400 2200 2200190x45 3200 3200 2600 2700 2300 2200 2100 2000 1900 1900

2/190x45 3700 3700 3200 3200 2800 2900 2600 2600 2400 2400240x35 3600 3500 3000 3000 2600 2700 2400 2400 2200 2200

2/240x35 4200 4200 3600 3500 3200 3200 3000 3000 2800 2800240x45 3800 3800 3200 3200 2800 2900 2600 2600 2400 2400

2/240x45 4400 4400 3800 3700 3400 3400 3200 3200 3000 30002/290x35 4800 4800 4100 4100 3700 3700 3500 3400 3300 3200

290x45 4300 4300 3700 3600 3300 3300 3100 3100 2900 29002/290x45 5100 5100 4300 4300 3900 3900 3700 3600 3500 3400

NOTES:NOTES:NOTES:NOTES:NOTES:i) Maximum Lintel Spans are based on the support of a maximum total tile roof, framing and ceiling mass of 90 kg/m2. For guidance on roof and ceiling mass refer to

Appendix B.ii) For lintels supporting concentrated loads refer Table 19.iii) Lintels to internal wall openings supporting ceiling joist only shall be sized as hanging beams.iv) Lintels in gable or skillion end walls not supporting roof loads shall be determined as per Clause 6.3.6.3.v) Minimum bearing length = 35 mm at end supports. Subscript values indicate the minimum additional bearing length where required to be greater than 35 mm.vi) Multiple members shall be nailed together as per Clause 2.3.vii) For design parameters refer to Figure 6.20.viii) Lintels must be used in conjunction with top plates, ledgers and head trimmers.ix) When lintels are used to their maximum design limits, deflections of up to 10 mm (deadload) or 15mm (live load) may be expected.


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TABLE 19 LINTELS - Sheet roof - supporting concentrated roof loadsRoof Load Width (mm)

1500 4500 7500

5 10 20 40 5 10 20 40 5 10 20 40

Maximum Lintel Span (mm)Size DxB (mm)

Roof AreaSupported

(m2)

90x35 1100 800 600 NS 1000 800 600 NS 900 700 600 NS

90x45 1200 900 700 NS 1100 900 600 NS 1000 800 600 NS

2/90x35 1500 1100 800 NS 1200 1000 800 NS 1100 900 700 NS

2/90x45 1600 1200 900 600 1400 1100 800 600 1200 1000 800 NS

120x35 1600 1200 900 NS 1300 1100 800 NS 1200 1000 800 NS

120x45 1700 1300 1000 NS 1500 1200 900 NS 1300 1100 900 NS

2/120x35 2100 1600 1200 700 1700 1400 1100 700 1500 1300 1100 700

2/120x45 2300 1800 1300 900 1900 1600 1300 900 1700 1500 1200 900

140x35 1900 1400 1100 NS 1600 1300 1000 NS 1400 1200 1000 NS

140x45 2100 1600 1200 NS 1700 1500 1100 NS 1600 1300 1100 NS

2/140x35 2500 2000 1500 1000 2100 1700 1400 1000 1800 1600 1300 1000

2/140x45 2800 2200 1600 1200 2300 1900 1500 1200 2000 1800 1500 1100

170x35 2400 1900 1400 NS 2000 1700 1300 NS 1800 1500 1300 NS

170x45 2600 2100 1600 700 2200 1900 1500 700 1900 1700 1400 700

2/170x35 3100 2600 1900 1400 2600 2200 1800 1400 2300 2000 1700 1300

2/170x45 3300 2800 2200 1600 2800 2500 2000 1500 2500 2200 1900 1500

190x35 2700 2200 1600 600(5) 2200 1900 1500 600(5) 2000 1800 1500 600(5)

190x45 3000 2400 1800 1000 2500 2100 1700 900 2200 1900 1600 900(5)

2/190x35 3400 3000 2300 1600 2900 2600 2100 1600 2600 2300 2000 1500

2/190x45 3600 3200 2500 1900 3100 2800 2300 1800 2800 2600 2200 1700

240x35 3400 3000 2300 1100(10) 2900 2600 2100 1100(10) 2600 2300 2000 1000(10)

240x45 3700 3200 2600 1900(5) 3100 2800 2300 1800(10) 2800 2600 2200 1700(10)

2/240x35 4000 3700 3100 2300 3500 3300 2800 2200 3200 3000 2600 2100

2/240x45 4000 3900 3300 2600 3800 3500 3100 2500 3400 3200 2900 2400

290x45 4000 3800 3200 2500(10) 3700 3400 3000 2400(10) 3300 3100 2800 2300(15)

2/290x35 4000 4000 3700 3000 4000 3800 3400 2900 3700 3500 3200 2700

2/290x45 4000 4000 4000 3300 4000 4000 3700 3100 4000 3800 3500 3000

NOTES:NOTES:NOTES:NOTES:NOTES:i) Maximum Lintel Spans are based on the support of a maximum total sheet roof, framing and ceiling mass of 40 kg/m2. For guidance on roof and ceiling mass refer

to Appendix B.ii) For lintels supporting hanging beams, the area supported shall be taken as one half of the ceiling area supported by the lintel and the size determined from the sheet

roof section.iii) Minimum bearing length = 35 mm at end supports. Subscript values indicate the minimum additional bearing length where required to be greater than 35 mm.iv) Multiple members nailed together as per Clause 2.3.v) For roof area supported refer Clause 2.6.5.vi) Lintels must be used in conjunction with top plates, ledgers and head trimmers.vii) When lintels are used to their maximun design limits, deflections of up to 10 mm (deadload) or 15mm (live load) may be expected.viii) The roof area supported by the lintel should only be that proportion of roof area contributing to the concentrated load on the lintel, ie the roof area input for a lintel

supporting a strutting beam should be proportioned according to the area distributed to either end of the strutting beam.


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TABLE 20 LINTELS - Tile roof - supporting concentrated roof loadsRoof Load Width (mm)

1500 4500 7500

5 10 20 40 5 10 20 40 5 10 20 40

Maximum Lintel Span (mm)Size DxB (mm)

Roof AreaSupported

(m2)

NOTES:NOTES:NOTES:NOTES:NOTES:i) Maximum Lintel Spans are based on the support of a maximum total tile roof, framing and ceiling mass of 90 kg/m2. For guidance on roof and ceiling mass refer to

Appendix B.ii) For lintels supporting hanging beams, the area supported shall be taken as one half of the ceiling area supported by the lintel and the size determined from the sheet

roof section.iii) Minimum bearing length = 35 mm at end supports. Subscript values indicate the minimum additional bearing length where required to be greater than 35 mm.iv) Multiple members nailed together as per Clause 2.3.v) For roof area supported refer Clause 2.6.5.vi) Lintels must be used in conjunction with top plates, ledgers and head trimmers.vii) When lintels are used to their maximun design limits, deflections of up to 10 mm (deadload) or 15mm (live load) may be expected.viii) The roof area supported by the lintel should only be that proportion of roof area contributing to the concentrated load on the lintel, ie the roof area input for a lintel

supporting a strutting beam should be proportioned according to the area distributed to either end of the strutting beam.

90x35 800 N S N S N S 700 N S N S N S 600 N S N S N S

90x45 800 600 N S N S 700 600 N S N S 700 N S N S N S

2/90x35 1000 700 N S N S 900 700 N S N S 800 700 N S N S

2/90x45 1100 800 N S N S 1000 800 N S N S 900 700 N S N S

120x35 1100 800 N S N S 900 700 N S N S 900 700 N S N S

120x45 1200 900 N S N S 1000 800 N S N S 900 800 N S N S

2/120x35 1400 1100 600 N S 1200 1000 600 N S 1100 900 N S N S

2/120x45 1600 1200 900 N S 1400 1100 800 N S 1200 1000 800 N S

140x35 1300 1000 N S N S 1100 900 N S N S 1000 800 N S N S

140x45 1400 1100 N S N S 1200 1000 N S N S 1100 900 N S N S

2/140x35 1700 1300 1000 N S 1500 1200 900 N S 1300 1100 800 N S

2/140x45 1900 1500 1100 N S 1600 1400 1000 N S 1500 1300 1000 N S

170x35 1700 1300 N S N S 1400 1200 N S N S 1300 1100(5) N S N S

170x45 1900 1400 700 N S 1600 1300 600 N S 1400 1200 600 N S

2/170x35 2200 1800 1300 N S 1900 1600 1200 N S 1700 1400 1200 N S

2/170x45 2500 2000 1500 600 2100 1700 1400 600 1800 1600 1300 600

190x35 1900 1500 600(5) N S 1600 1300 600(5) N S 1400 1200(5) 600(10) N S

190x45 2200 1700 900 N S 1800 1500 800(5) N S 1600 1400 800(5) N S

2/190x35 2600 2000 1500 N S 2100 1800 1400 N S 1900 1700 1400 N S

2/190x45 2900 2300 1700 800 2300 2000 1600 800 2100 1800 1500 700

240x35 2600 2100 1000(10) 700(30) 2100 1800(5) 1000(15) 700(35) 1900 1700(10) 900(15) 700(35)

240x45 2900 2300 1700(10) 700(15) 2400 2000 1400(10) 700(20) 2100 1900(5) 1300(15) 700(20)

2/240x35 3300 2800 2100 900(5) 2800 2400 2000 900(10) 2500 2200 1900(5) 900(10)

2/240x45 3600 3100 2400 1600(5) 3000 2700 2200 1500(5) 2700 2400 2100 1400(10)

290x45 3400 3000 2300(10) 800(15) 2900 2600 2100(15) 800(20) 2600 2300(10) 1900(20) 800(20)

2/290x35 3900 3400 2800 1600(15) 3300 3000 2600 1500(15) 3000 2800 2400(5) 1400(15)

2/290x45 4000 3700 3100 2300(10) 3500 3300 2900 2200(10) 3200 3000 2600 2100(15)


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TABLE 21 CEILING JOISTS - Supporting ceiling loads (no overbatten)Joist Spacing (mm)

450 600 900 1200 450 600 900 1200

Maximum Ceiling Joist Span (mm)


Size DxB(mm)

TABLE 22 CEILING JOISTS - Supporting ceiling loads (with overbatten)Joist Spacing (mm)

450 600 900 1200 450 600 900 1200

Maximum Ceiling Joist Span (mm)Single Span Continuous Span

Size DxB(mm)

70x35 1800 1700 1600 1500 2100 2000 1900 180070x45 2000 1900 1800 1800 2500 2400 2200 210090x35 2600 2500 2400 2300 3200 3100 2900 270090x45 3000 2900 2700 2600 3700 3500 3300 3100

120x35 4200 4000 3600 3400 5200 4900 4500 4300120x45 4400 4200 3800 3600 5700 5500 5100 4800140x35 4800 4500 4100 3900 6100 5800 5500 5200140x45 5000 4800 4400 4100 6300 6000 5700 5400170x35 5500 5300 4900 4600 6900 6600 6200 5900170x45 5600 5400 5100 4900 7100 6800 6500 6200190x35 5800 5600 5300 5100 7200 7100 6700 6400190x45 6000 5800 5500 5300 7200 7200 7000 6600

70x35 1500 1500 1500 1500 1800 1800 1800 180070x45 1800 1800 1800 1800 2100 2100 2100 210090x35 2300 2300 2300 2300 2700 2700 2700 270090x45 2600 2600 2600 2600 3000 3000 3000 3000

120x35 3500 3500 3500 3400 4100 4100 4100 4100120x45 4000 4000 3800 3600 4700 4700 4700 4700140x35 4400 4400 4100 3900 5200 5200 5200 5200140x45 5000 4800 4400 4100 5900 5900 5700 5400170x35 5500 5300 4900 4600 6900 6600 6200 5900170x45 5600 5400 5100 4900 7100 6800 6500 6200190x35 5800 5600 5300 5100 7200 7100 6700 6400190x45 6000 5800 5500 5300 7200 7200 7000 6600

NOTES:NOTES:NOTES:NOTES:NOTES:I) Maximum spans are based on the support of a maximum ceiling mass of 12 kg/m2 . For guidance on roof and ceiling mass refer to Appendix B.ii) Roof loads shall not be strutted onto ceiling joists.iii) For design parameters refer to Figure 7.19.iv) During construction, planks shall be secured on top of the ceiling joist to safely support construction loads.v) The sizes/spans in this table are not suitable for the support of platforms used for storage, etc in the ceiling space.

NOTES:NOTES:NOTES:NOTES:NOTES:i) Maximum spans are based on the support of a maximum ceiling mass of 12 kg/m2 . For guidance on roof and ceiling mass refer to Appendix B.ii) Roof loads shall not be strutted onto ceiling joists.iii) For design parameters refer to Figure 7.19.iv) During construction, planks shall be secured on top of the ceiling joist to safely support construction loads.v) The sizes/spans in this table are not suitable for the support of platforms used for storage, etc in the ceiling space.vi) The overbatten shall be a minimum of F5 35x70 mm and shall be placed at midspan of the ceiling joists.


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TABLE 23 HANGING BEAMS - Supporting ceiling loadsCeiling Load Width (mm)

1800 2400 3000 3600 4200 4800 5400 6000

Maximum Beam Span (mm)

Size DxB(mm)

TABLE 24 COUNTER BEAMSCounter Beam Spacing (mm)

1800 2400 3000 3600 4200 4800

Maximum Beam Span (mm)

Size DxB(mm)

120x35 3100 2800 2600 2500 2400 23002/120x35 3800 3500 3300 3100 3000 2800

120x45 3300 3100 2900 2700 2600 2500140x35 3600 3300 3100 2900 2800 2600

2/140x35 4200 4000 3800 3600 3400 3300140x45 3800 3600 3300 3100 3000 2900170x35 4200 3900 3700 3500 3300 3200

2/170x35 4900 4600 4400 4200 4000 3900170x45 4400 4100 3900 3800 3600 3500190x35 4500 4200 4000 3900 3700 3600

2/190x35 5300 4900 4700 4500 4400 4200190x45 4800 4500 4300 4100 4000 3800240x35 5400 5000 4800 4600 4400 4300

2/240x35 6200 5800 5600 5400 5200 5000240x45 5700 5300 5100 4900 4700 4600290x35 6200 5800 5500 5200 4900 4700

2/290x35 7100 6700 6400 6100 5900 5800290x45 6500 6100 5800 5600 5400 5200

90x35 2300 2100 1900 1700 1600 1500 1400 140090x45 2500 2200 2000 1900 1800 1600 1600 1500

120x35 3100 2700 2500 2300 2200 2000 1900 1800120x45 3300 3000 2700 2500 2300 2200 2100 2000140x35 3500 3200 2900 2700 2500 2400 2200 2100140x45 3800 3400 3100 2900 2700 2600 2400 2300170x35 4300 3800 3500 3300 3100 2900 2700 2600170x45 4600 4100 3800 3500 3300 3100 2900 2800190x35 4700 4300 3900 3600 3400 3200 3000 2900190x45 5100 4600 4200 3900 3700 3500 3300 3100240x35 5900 5300 4900 4600 4300 4000 3800 3600240x45 6300 5700 5300 4900 4600 4400 4100 3900290x35 7000 6400 5900 5500 5100 4800 4600 4400290x45 7200 6800 6300 5900 5500 5200 5000 4700

NOTES:NOTES:NOTES:NOTES:NOTES:i) Maximum spans are based on the support of a maximum ceiling mass of 12 kg/m2. For guidance on roof and ceiling mass refer to Appendix B.ii) Beam ends may be chamfered to a minimum depth of 100 mm or 1/3 of the beam depth, whichever is greater.iv) Where ceiling joist spans are not the same each side of the beam, the average of the spans may be used.v) Roof loads shall not be strutted onto hanging beams.vi) Minimum bearing length = 70 mm at end supports.vi) Where the depth to breadth ratio exceeds 7:1, G.I. strapping or similar restraint shall be provided to the top edge of the beam at support points. Refer to

Clause 7.2.26.vii) For design parameters refer to Figure 7.20.

NOTES:NOTES:NOTES:NOTES:NOTES:i) Maximum spans are based on the support of a maximum ceiling mass of

12 kg/m2 . For guidance on roof and ceiling mass refer to Appendix B.The mass of ceiling joists and hanging beams is accommodated in thespan calculations.

ii) Beam ends may be chamfered to a minimum depth of 100 mm or 1/3 ofthe beam depth, whichever is greater.

iii) Where hanging beam spans are not the same each side of the counterbeam, the average of the spans may be used.

iv) Minimum bearing length = 70 mm at end supports.v) Multiple members nailed together as per Clause 2.3.vi) For design parameters refer to Figure 7.21.


Acce

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COPYRIGHT


Roof Area Supported (m2 )

TABLE 25 STRUTTING / HANGING BEAMSSupporting roof & ceiling loads

Ceiling Load Width (mm)

1800 3600

2 4 6 8 10 12 2 4 6 8 10 12

Maximum Beam Span (mm)Sheet Roof

Size DxB (mm)

Tile Roof

2/120x35 3000 2600 2200 2000 1800 1700 2500 2200 2000 1900 1700 16002/120x45 3300 2800 2500 2200 2100 1900 2700 2500 2200 2100 1900 18002/140x35 3600 31

Documents

1684.2N1N2, F17_Seasoned Hardwood