MS 1462-2-2-2010 (CONFIRMED 2015) SOIL

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MALAYSIAN STANDARD

MS 1462-2-2-:2010 (CONFIRMED:2015)

Metal scaffolding - Part 2: Tubular (Tube and coupler scaffolds - Section 2: Specification for aluminium tubes

ICS: 91.220 Descriptors: aluminium alloys, extruding, scaffolds, rigid pipes, pipes, standards (scaffolding), construction equipment, diameter, thickness, tensile strength, yield strength, elongation, dimensional tolerances, form tolerances, drift expanding tests NOTE. This MS has been reviewed by the responsible committee and confirmed that its contents are current

© Copyright 2015 DEPARTMENT OF STANDARDS MALAYSIA

DEVELOPMENT OF MALAYSIAN STANDARDS The Department of Standards Malaysia (STANDARDS MALAYSIA) is the national standards and accreditation body of Malaysia.

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The main function of STANDARDS MALAYSIA is to foster and promote standards, standardisation and accreditation as a means of advancing the national economy, promoting industrial efficiency and development, benefiting the health and safety of the public, protecting the consumers, facilitating domestic and international trade and furthering international cooperation in relation to standards and standardisation. Malaysian Standards (MS) are developed through consensus by committees which comprise balanced representation of producers, users, consumers and others with relevant interests, as may be appropriate to the subject at hand. To the greatest extent possible, Malaysian Standards are aligned to or are adoption of international standards. Approval of a standard as a Malaysian Standard is governed by the Standards of Malaysia Act 1996 [Act 549]. Malaysian Standards are reviewed periodically. The use of Malaysian Standards is voluntary except in so far as they are made mandatory by regulatory authorities by means of regulations, local by-laws or any other similar ways. For the purposes of Malaysian Standards, the following definitions apply: Revision: A process where existing Malaysian Standard is reviewed and updated which resulted in the publication of a new edition of the Malaysian Standard. Confirmed MS: A Malaysian Standard that has been reviewed by the responsible committee and confirmed that its contents are current. Amendment: A process where a provision(s) of existing Malaysian Standard is altered. The changes are indicated in an amendment page which is incorporated into the existing Malaysian Standard. Amendments can be of technical and/or editorial nature. Technical corrigendum: A corrected reprint of the current edition which is issued to correct either a technical error or ambiguity in a Malaysian Standard inadvertently introduced either in drafting or in printing and which could lead to incorrect or unsafe application of the publication. NOTE: Technical corrigenda are not to correct errors which can be assumed to have no consequences in the application of the MS, for example minor printing errors.

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For further information on Malaysian Standards, please contact:

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OR

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MS 1462-2-2:2010

CONTENTS

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Page

Committee representation .................................................................................................

ii

Foreword............................................................................................................................

iii

1

Scope....................................................................................................................

1

2

Method of manufacture.........................................................................................

1

3

Materials ...............................................................................................................

1

3.1

General .............................. ……………………………………………………………

1

3.2

Chemical composition……………………………………………………….. ............

1

3.3

Mechanical properties ..........................................................................................

1

4

Dimensions and tolerances ..................................................................................

2

5

Workmanship........................................................................................................

2

6

Finish .................................................. ……………………………………………….

2

7

Identification.......................... …………………………………………………………

2

Table 1

Dimensions and tolerances for aluminium tubes ...........................................

2

Figure A1

Arrangement of drift expanding test...............................................................

3

Annex A

Drift expanding test for extruded aluminium scaffold tubes...........................

3

Bibliography .......................................................................................................................

5

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i

MS 1462-2-2:2010

Committee representation

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The Industry Standards Committee on Building, Construction and Civil Engineering (ISC D) under whose authority this Malaysian Standard was developed, comprises representatives from the following organisations: Association of Consulting Engineers Malaysia Construction Industry Development Board Malaysia Department of Irrigation and Drainage Department of Standards Malaysia Federation of Malaysian Manufacturers Jabatan Bomba dan Penyelamat Malaysia Jabatan Kerajaan Tempatan Jabatan Kerja Raya Malaysia Malaysian Timber Industry Board Master Builders Association Malaysia Ministry of Energy, Green Technology and Water Ministry of International Trade and Industry National Housing Department Pertubuhan Akitek Malaysia SIRIM Berhad (Secretariat) The Chartered Institute of Building Malaysia The Institution of Engineers, Malaysia Universiti Sains Malaysia Universiti Teknologi Malaysia

The Technical Committee on Steel Products which supervised the development of this Malaysian Standard consists of representatives from the following organisations: Construction Industry Development Board Malaysia Department of Occupational Safety and Health Malaysia Malaysian Iron and Steel Industry Federation Malaysian Structural Steel Association Master Builders Association Malaysia SIRIM Berhad (Secretariat) SIRIM QAS International Sdn Bhd Universiti Malaya Universiti Teknologi Malaysia Universiti Teknologi MARA

The Working Group on Tubular and Prefabricated Scaffolding which developed this Malaysian Standard consists of representatives from the following organisations: Concrete Society Malaysia Department of Occupational Safety and Health Malaysia F.D Industrial Supplies Sdn Bhd Huatraco Marketing Sdn Bhd Jabatan Kerja Raya Malaysia PMB Quick Access Sdn Bhd SIRIM Berhad (Secretariat) Southern Pipe Industry (M) Sdn Bhd SUMI-Tech Industrial Supplies Sdn Bhd Universiti Kebangsaan Malaysia Universiti Malaya Universiti Teknologi MARA

ii

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MS 1462-2-2:2010

FOREWORD This Malaysian Standard was developed by the Working Group on Tubular and Prefabricated Scaffolding under the authority of the Industry Standards Committee on Building, Construction and Civil Engineering This Malaysian Standard consists of the following parts, under the general title Metal Scaffolding:

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Part 1: Prefabricated scaffolds - Specification for steel frame scaffolding Part 2: Tubular (tube and coupler) scaffolds - Section 1: Specification for steel tubes Part 2: Tubular (tube and coupler) scaffolds - Section 2: Specification for aluminium tubes Part 2: Tubular (tube and coupler) scaffolds - Section 3: Specification for steel and aluminium couplers, fitting and accessories Part 3: Prefabricated scaffolds - Section 1: Specification for steel and aluminium modular system scaffolding Part 3: Prefabricated scaffolds - Section 2: Particular methods of structural design for steel and aluminium modular system scaffolding Part 4: Temporary works equipment - Section 1: Performance requirements and general design Part 4: Temporary works equipment - Section 2: Information of materials Part 4: Temporary works equipment - Section 3: Load testing Part 5: Mobile access and working tower made of prefabricated elements - Materials, dimensions, design loads, safety and performance requirements Part 6: Temporarily installed suspended scaffolds and access equipment Compliance with a Malaysian Standard does not of itself confer immunity from legal obligations.

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iii

MS 1462-2-2:2010

METAL SCAFFOLDING PART 2: TUBULAR (TUBE AND COUPLER) SCAFFOLDS SECTION 2: SPECIFICATION FOR ALUMINIUM TUBES 1 Scope

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This section of Malaysian Standard specifies requirements for the material, dimensions and method of manufacture of extruded aluminium tubes for use in scaffolding. It specifies one grade of material and one range of dimensions. Appendix A describes a drift expanding test for extruded aluminium scaffold tubes.

2 Method of manufacture Aluminium scaffold tubes shall be produced by extrusion, by means of a process using a mandrel, a bridge die or a porthole. When tested in accordance with appendix A, a tube in its finished state shall show no sign of an unsound weld. NOTE. A tube with faulty welding will tend to exhibit a straight line, rather than jagged, fracture at the position of the weld. This test procedure should be considered as being a part of a quality control programme and the frequency of testing should be such as to ensure adequate quality control.

3 Materials 3.1 General The tube shall be manufactured from aluminium complying with the requirements of 3.2 and 3.3. 3.2 Chemical composition Tubes shall be extruded aluminium tubes complying with the requirements for alloy 6082-TF (formerly HE30-TF) specified in BS 1474. NOTE. As these tubes are heat-treated , heat should not be applied to them by welding, flame cutting, etc ., unless this is carried out under the controlled conditions recommended in CP 118.

3.3 Mechanical properties The mechanical properties of the tubes shall be as follows: tensile strength (Rm) yield strength (Re) (0.2% proof stress) elongation (A) on a gauge length, Lo, of 50 mm

© STANDARDS MALAYSIA 2010 - All rights reserved

295 N/mm2 minimum 255 N/mm2 minimum 7 % minimum

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MS 1462-2-2:2010

4 Dimensions and tolerances The dimensions and tolerances for aluminium tubes shall be as given in table 1.

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Table 1. Dimensions and tolerances for aluminium tubes Dimensions and mass Outside diameter 48.30 mm Thickness 4.47 mm Nominal mass per unit length 1.667 kg/m (48.30 mm x 4.47 mm) Length if specified exact

Tolerance ± 0.5 mm ± 0.56 mm Single tube maximum reduction 7.5 % Quantities of 150 mm and over ± 5 % ± 6.0 mm

NOTE. The following nominal values for the properties of aluminium scaffolding tubes of the dimensions in Table 1 are given for information purposes only. Details of maximum permissible stresses are given in BS 5973.

Cross-sectional area Second moment of area Elastic modulus Radius of gyration

Symbol A l Z r

Value 6.15 cm2 14.9 cm4 6.18 cm3 1.56 cm

5 Workmanship A tube shall not deviate from a straight line by more than 1/600 of its length, measured at the centre of the length. Tubes shall be clean and free from detrimental defects. The ends shall be cut cleanly and square with the axis of the tube.

6 Finish Tubes shall be mill finished, i.e. without any surface treatment. NOTE. For all normal purposes no painting or other surface treatment required. Tubes likely to remain in contact with wet acid or alkaline materials, e.g. damp cement or lime renderings, need protection. Advice on suitable coatings can * be obtained from the Aluminium Federation .

7 Identification The method of identification used shall not impair the performance of the tube.

*

Aluminium Federation Ltd., Broadway House, Calthorpe Road, Five Ways, Birmingham, B15 1TN. © STANDARDS MALAYSIA 2010 - All rights reserved

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MS 1462-2-2:2010

Annex A (informative) Drift expanding test for extruded aluminium scaffold tubes A1

Principle

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The end of a tube or test piece is expanded using a conical mandrel until it tears or splits. The test is carried out at ambient temperature unless otherwise specified.

A2

Apparatus

A.2.1 Polished steel conical mandrel, of adequate hardness and having a conical included angle of 30°, 45° or 60°.

Key 1 2 3 4 5

Outside diameter of tube or test pipe Thickness of wall of tube or test pipe Length of test piece Conical angle of mandrel Maximum external diameter of end of expanded tube

Figure A1. Arrangement of drift expanding test

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MS 1462-2-2:2010

A3

Test piece

The test piece shall consist of a piece of tube having a length equal to at least twice the external diameter of the tube. Both ends of the test piece shall be plane and perpendicular to the axis of the tube. The test piece shall be cleaned to remove any loose chips or dirt from the inside surface. NOTE. The end to be tested is normally rounded by filing. However, a test piece with edges that have not been rounded is acceptable provided that the test result is satisfactory.

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A4

Procedure

Lubricate the mandrel so that it does not rotate in relation to the tube during the test. Force the conical mandrel under pressure into the open end of the test piece, so that the axis of the cone coincides with the axis piece. Continue applying pressure until the tube tears or splits.

4

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MS 1462-2-2:2010

Bibliography

[1] BS 1474, Specification for wrought aluminium and aluminium alloys for general engineering purposes: bars, extruded round tubes and sections [2] BS 5973, Code of practice for access and working scaffolds and special scaffold structures in steel

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[3] CP 118, The structural use of aluminium [4] EN 485-1, Aluminium and aluminium alloys. Sheet, strip and plate. Technical conditions for inspection and delivery [5] EN 755-1, Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Technical conditions for inspection and delivery [6] EN 754-1, Aluminium and aluminium alloys. Cold drawn rod/bar and tube. Technical conditions for inspection and delivery [7] EN 586-1, Aluminium and aluminium alloys. Forgings. Technical conditions for inspection and delivery [8] EN 1592-1, Aluminium and aluminium alloys. HF seam welded tubes. Technical conditions for inspection and delivery [9] EN 12020-1, Aluminium and aluminium alloys. Extruded precision profiles in alloys EN AW-6060 and EN AW-6063. Technical conditions for inspection and delivery [10] EN 12811-1, Temporary works equipment. Scaffolds. Performance requirements and general design [11] EN 12811-2, Temporary works equipment. Information on materials [12] EN 12812, Falsework. Performance requirements and general design

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Acknowledgements Members of Technical Committee on Steel Products Organisation Name Ir Mat Jusoh Mamat (Chairman) Malaysian Structural Steel Association Ms Nadiah Mohamed (Secretary) SIRIM Berhad Mr Razuki Ibrahim Construction Industry Development Board Malaysia Ir Nor Halim Hassan Department of Occupational Safety and Health Malaysia Dr Look Tian Fook Malaysian Iron and Steel Industry Federation Mr K Govindaraj Master Builders Association Malaysia Mr Mohd Hamim Imam Mustain SIRIM QAS International Sdn Bhd Dr Nor Hafizah Ramli Universiti Malaya Dr Ir Mohd Hanim Osman Universiti Teknologi Malaysia Datin Dr Hanizah Abdul Hamid Universiti Teknologi MARA

Members of Working Group on Tubular and Prefabricated Scaffolding Name Organisation Datin Dr Hanizah Abdul Hamid (Chairman) Universiti Teknologi MARA Ms Nadiah Mohamed (Secretary) SIRIM Berhad Assoc Prof Dr Azmi Ibrahim Concrete Society Malaysia Ir Nor Halim Hassan Department of Occupational Safety and Health Malaysia Ir Lee Kee Bau Huatraco Marketing Sdn Bhd Ir Hanizah Argadan Jabatan Kerja Raya Malaysia Mr Alex Tan Teng Yong PMB Quick Access Sdn Bhd Mr Tan Eng Siong Southern Pipe Industry (M) Sdn Bhd SUMI-Tech Industrial Supplies Sdn Bhd Mr Ng Boon Liam/ Ms Oong Seak Hong Dr Nor Hafizah Ramli Mr Aruan Efendy

Universiti Malaya Universiti Teknologi MARA

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© Copyright 2015 All rights reserved. No part of this publication may be reproduced or utilised in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the Department of Standards Malaysia.