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    Portable ladders Timber (Reconfirmed 2022)

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English

    Published date:  20-07-1992

    Publisher:  Standards Australia

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    Table of Contents - (Show below) - (Hide below)

    1 - AS 1892.2-1992 PORTABLE LADDERS - TIMBER
    4 - PREFACE
    5 - CONTENTS
    7 - SECTION 1 SCOPE AND GENERAL
    7 - 1.1 SCOPE
    7 - 1.2 APPLICATION
    7 - 1.3 REFERENCED DOCUMENTS
    7 - 1.4 DEFINITIONS
    7 - 1.4.1 Portable timber ladder
    7 - 1.4.2 Domestic ladder
    7 - 1.4.3 Industrial ladder
    7 - 1.4.4 Single ladder
    7 - 1.4.5 Extension ladder
    8 - 1.4.6 Single-sided stepladder
    8 - 1.4.7 Double-sided stepladder
    8 - 1.4.8 Trestle ladder
    8 - 1.4.9 Trestle-backed steps
    8 - 1.4.10 Special-purpose ladder
    8 - 1.4.11 Maximum working length
    8 - 1.4.12 Overlap
    8 - 1.4.13 Stile
    8 - 1.4.14 Rungs and treads
    8 - 1.4.15 Top cap
    8 - 1.4.16 Step surfaces
    8 - 1.4.17 Section
    8 - 1.4.18 Duty rating
    8 - 1.4.19 Load rating
    10 - SECTION 2 GENERAL REQUIREMENTS
    10 - 2.1 DESIGN AND CONSTRUCTION
    10 - 2.2 RATINGS
    10 - 2.2.1 Duty rating
    10 - 2.2.2 Load rating
    10 - 2.3 MATERIALS
    10 - 2.3.1 General
    10 - 2.3.2 Species of timber
    10 - 2.3.3 Quality of timber
    10 - 2.4 WORKMANSHIP AND FINISH
    10 - 2.4.1 General
    11 - 2.4.2 Finish
    11 - 2.4.3 Fasteners
    11 - 2.4.4 Fittings
    11 - 2.4.5 Tolerances
    11 - 2.5 STILES
    11 - 2.5.1 Design
    11 - 2.5.2 Manufacture
    11 - 2.5.3 Joints in stiles
    11 - 2.5.4 Grooving of stiles
    11 - 2.5.5 Feet
    12 - 2.6 TREADS AND RUNGS
    12 - 2.6.1 Shape
    12 - 2.6.2 Spacing
    12 - 2.7 MARKING
    12 - 2.7.1 All ladders
    12 - 2.7.2 Double-sided stepladders
    12 - 2.7.3 Wire bound ladders
    12 - 2.7.4 Labels
    13 - SECTION 3 PARTICULAR REQUIREMENTS FOR SINGLE LADDERS (INCLUDING CLEATED LADDERS)
    13 - 3.1 LENGTH
    13 - 3.2 STILES
    13 - 3.2.1 Distance between stiles
    13 - 3.2.2 Dimensions of stiles
    13 - 3.3 RUNGS AND CLEATS
    13 - 3.3.1 Materials
    13 - 3.3.2 Dimensions of rungs and cleats
    13 - 3.3.3 Attachment of rungs and cleats to stiles
    14 - 3.4 TIES AND THEIR FITTING
    14 - 3.4.1 Arrangement
    14 - 3.4.2 Material and fixing
    15 - SECTION 4 PARTICULAR REQUIREMENTS FOR EXTENSION LADDERS
    15 - 4.1 LENGTH
    15 - 4.2 STILES
    15 - 4.2.1 Distance between stiles
    15 - 4.2.2 Dimensions and overlap
    15 - 4.3 RUNGS
    15 - 4.3.1 Materials
    15 - 4.3.2 Dimensions
    15 - 4.3.3 Attachment of rungs to stiles
    15 - 4.3.4 Ties and their fitting
    15 - 4.4 FITTINGS
    15 - 4.4.1 General
    15 - 4.4.2 Clutch
    15 - 4.4.3 Stop
    15 - 4.4.4 Guide brackets
    15 - 4.5 ROPE AND PULLEY
    15 - 4.5.1 General
    15 - 4.5.2 Load
    16 - 4.5.3 Rope
    16 - 4.5.4 Pulleys
    16 - 4.6 WIRE REINFORCEMENT
    16 - 4.6.1 General
    16 - 4.6.2 Wire
    16 - 4.6.3 Fixing
    16 - 4.6.4 End anchorage
    16 - 4.7 FIBRE-REINFORCED PLASTICS REINFORCEMENT
    16 - 4.7.1 General
    16 - 4.7.2 FRP rod
    16 - 4.7.3 Bonding
    16 - 4.7.4 Anchorage
    17 - SECTION 5 PARTICULAR REQUIREMENTS FOR STEPLADDERS
    17 - 5.1 LENGTH
    17 - 5.2 STILES AND BACKLEGS
    17 - 5.2.1 Distance between stiles
    17 - 5.2.2 Dimensions of stiles and back legs
    17 - 5.2.3 Spread between stiles and back legs
    17 - 5.2.4 Battening and bracing of back legs
    18 - 5.2.5 Distance between back legs
    18 - 5.3 TREADS
    18 - 5.3.1 Dimensions
    18 - 5.3.2 Location
    18 - 5.3.3 Surface finish
    18 - 5.3.4 Spacing of treads
    18 - 5.3.5 Attachment of treads to stiles
    18 - 5.4 BRACING OF TREADS IN INDUSTRIAL STEPLADDERS
    18 - 5.5 TOP
    18 - 5.6 BACK SUPPORT PLATE
    18 - 5.6.1 Industrial stepladders
    18 - 5.6.2 Domestic stepladders
    18 - 5.7 HINGES
    19 - 5.8 TIES AND THEIR FITTING IN INDUSTRIAL STEPLADDERS
    19 - 5.8.1 Arrangement
    19 - 5.8.2 Material and fixing
    20 - SECTION 6 PARTICULAR REQUIREMENTS FOR PLATFORM STEPLADDERS
    20 - 6.1 LENGTH
    20 - 6.2 STILES AND BACK LEGS
    20 - 6.2.1 Distance between stiles
    20 - 6.2.2 Dimensions of stiles and back legs
    20 - 6.2.3 Spread between stiles and back legs
    20 - 6.2.4 Battening and bracing of back legs
    20 - 6.2.5 Distance between back legs
    20 - 6.3 TREADS
    20 - 6.3.1 Dimensions
    21 - 6.3.2 Location
    21 - 6.3.3 Surface finish
    21 - 6.3.4 Bracing of treads
    21 - 6.4 PLATFORM
    21 - 6.5 HINGES
    21 - 6.6 TIES AND THEIR FITTING
    21 - 6.6.1 Arrangement
    21 - 6.6.2 Materials and fixing
    22 - SECTION 7 PARTICULAR REQUIREMENTS FOR TRESTLE LADDERS
    22 - 7.1 LENGTH
    22 - 7.2 STILES
    22 - 7.2.1 Distance between stiles
    22 - 7.2.2 Dimensions
    22 - 7.2.3 Spread between pairs of stiles
    22 - 7.3 CROSS BEARERS
    22 - 7.3.1 Dimensions
    22 - 7.3.2 Spacing of crossbearers
    22 - 7.3.3 Attachment of crossbearers to stiles
    22 - 7.4 HINGES
    23 - 7.5 CHECK BLOCKS
    23 - 7.6 TIES AND THEIR FITTING
    23 - 7.6.1 Arrangement
    23 - 7.6.2 Materials and fixing
    24 - SECTION 8 PARTICULAR REQUIREMENTS FOR DOMESTIC EXTENSION STEPLADDERS
    24 - 8.1 LENGTH
    24 - 8.2 STILES
    24 - 8.2.1 Distance between stiles
    24 - 8.2.2 Dimensions and overlap
    24 - 8.2.3 Spread between front stiles and back stiles
    24 - 8.3 TREADS AND RUNGS
    24 - 8.3.1 Dimensions of treads
    24 - 8.3.2 Dimensions of rungs
    24 - 8.3.3 Location of treads
    24 - 8.3.4 Surface finish
    24 - 8.3.5 Attachment of treads and rungs to stiles
    24 - 8.3.6 Bracing of treads
    25 - 8.4 FITTINGS
    25 - 8.4.1 General
    25 - 8.4.2 Stop
    25 - 8.4.3 Spread between stiles
    25 - 8.5 TOP
    26 - SECTION 9 TIMBER LADDERS HAVING STILES OF TIMBER OTHER THAN DOUGLAS FIR
    26 - 9.1 APPLICATION
    26 - 9.2 MATERIALS
    26 - 9.3 DIMENSIONS
    26 - 9.3.1 Component spacing
    26 - 9.3.2 Unreinforced stile dimensions
    26 - 9.3.3 Reinforced stile dimensions
    27 - APPENDIX A - METHODS OF GRADING TIMBER STILES
    27 - A1 SCOPE
    27 - A2 VISUAL GRADING
    28 - A3 VISUAL GRADING AND PROOF DEFLECTION TESTS METHOD
    28 - A3.1 General
    28 - A3.2 Visual grading
    28 - A3.3 Proof deflection
    29 - A4 MECHANICAL STRESS GRADING
    31 - APPENDIX B - EXAMPLES OF LABELS USED FOR ADDITIONAL SAFETY WARNINGS
    33 - APPENDIX C - DERIVATION OF EQUATIONS FOR EXTREME FIBRE STRESS
    33 - C1 GENERAL
    33 - C2 EQUATIONS FOR BENDING MOMENT
    33 - C2.1 Bending moment due to mass of ladder
    33 - C2.2 Bending moment due to the mass of the user
    33 - C2.3 Maximum bending moment
    33 - C3 EQUATIONS FOR EFFECTIVE SECTION MODULUS
    33 - C3.1 Stiles having circular holes for rungs
    34 - C3.2 Stile having transverse grooves for treads
    34 - C4 DERIVATION OF WORKING EQUATIONS
    34 - C4.1 For stiles having circular holes for rungs
    34 - C4.2 For stiles having transverse grooves for treads

    Abstract - (Show below) - (Hide below)

    Sets out the minimum requirements for the materials, design and construction of timber ladders rated for domestic or industrial use. It applies to single, extension, step and trestle ladders as well as to platform step ladders and domestic extension step ladders. Methods for grading timber stiles and examples of labels that may be used to convey safety warnings are provided in appendices.

    Scope - (Show below) - (Hide below)

    This Standard sets out the minimum constructional and safety requirements for the design and manufactureof portable ladders with timber stiles.The Standard provides for ladders of two duty ratings, viz 'industrial ladders' and 'domestic ladders', which are assigned minimum load ratings.The Standard does not cover ladder accessories such as ladder levellers, ladder stabilizers or stand-off devices, ladder jacks, or ladder straps or hooks that may be installed on or used in conjunction with ladders.

    General Product Information - (Show below) - (Hide below)

    Committee SF/34
    Document Type Standard
    Publisher Standards Australia
    Status Current
    Supersedes

    History - (Show below) - (Hide below)

    First published as AS A90-1959.Second edition 1971.Revised and redesignated AS 1688-1974.Revised and redesignated AS 1892.2-1992. First published as AS A90-1959. Second edition 1971. Revised and redesignated AS 1688-1974. Revised and redesignated AS 1892.2-1992.

    Standards Referenced By This Book - (Show below) - (Hide below)

    AS 1504-1983 Fibre rope - Three strand, hawser laid
    AS/NZS 1080.1:1997 Timber - Methods of Test Moisture content
    AS 2089-1993 Sheave blocks for lifting purposes
    AS 1080.1-1972 Methods of testing timber Moisture content
    AS 2543-1983 Nomenclature of Australian timbers
    AS 1148-1971 Nomenclature of commercial timbers imported into Australia
    AS 1394-1984 Round steel wire for ropes
    AS 1728-1975 Types of timber surfaces
    AS/NZS 1148:2001 Timber - Nomenclature - Australian, New Zealand and imported species (Reconfirmed 2016)
    AS/NZS 1748:2006 Timber - Mechanically stress-graded for structural purposes
    AS 1394-2001 Round steel wire for ropes
    AS/NZS 1080.2.1:1998 Timber - Methods of test Slope of grain by scribe
    AS 1080.2.1-1981 Methods of testing timber - Determination of slope of grain by scribe
    AS 1748-1978 Specification for mechanically stress-graded timber
    AS 1604-1997 Timber - Preservative-treated - Sawn and round

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    AS/NZS 1576.1:2010 Scaffolding - General requirements
    AS 2865-1995 Safe working in a confined space
    AS/NZS 4836:2011 Safe working on or near low-voltage electrical installations and equipment
    AS/NZS 1576.1:1995 Scaffolding General requirements
    AS 3610.1-2010 Formwork for concrete Documentation and surface finish
    AS/NZS 4576:1995 Guidelines for scaffolding
    AS/NZS 1576.6:2000 Scaffolding Metal tube-and-coupler scaffolding - Deemed to comply with AS/NZS 1576.3
    HB 213:2003 Guidelines for safe working in a confined space
    AS 4024.3101-2008 Safety of machinery Materials cutting - Milling machines (including boring machines) - Safety requirements
    AS 1657-1992 Fixed platforms, walkways, stairways and ladders - Design, construction and installation
    AS/NZS 2865:2001 Safe working in a confined space
    AS 1892.5:2020 Portable ladders Selection, safe use and care
    AS/NZS 1576.5:1995 Scaffolding Prefabricated splitheads and trestles
    AS 6001-1999 Working platforms for housing construction
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