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BS 1139-2.1:1991

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Metal scaffolding. Couplers Specification for steel couplers, loose spigots and base-plates for use in working scaffolds and falsework made of steel tubes
Available format(s)

Hardcopy , PDF

Superseded date

08-31-2006

Language(s)

English

Published date

01-31-1991

Brief history
1. Object and field of application
2. References
3. Definitions
3.1 Coupler
3.2 Right angle coupler (RA)
3.3 Swivel coupler (SW)
3.4 Parallel coupler (PA)
3.5 Sleeve coupler (SF or SS)
3.6 Loose spigot (LS)
3.7 Base-plate (BP)
4. Symbols
4.1 Measured values
4.2 Statistical values
5. Materials and design
5.1 Materials
5.2 Data required from the manufacturer for
      assessment purposes
6. Requirements
6.1 Design requirements
6.2 Required characteristics for couplers under
      load (see clause 9)
6.3 Requirements in the case of design alteration
7. Sampling for prototype tests
8. Assessment methods
8.1 Assessment without statistical analysis
8.2 Assessment with statistical analysis
9. Load tests for prototype couplers
9.1 General
9.2 Testing of behaviour under load of right angle
      couplers
9.3 Testing of behaviour under load of swivel couplers
9.4 Determination of the ultimate load for right angle
      and swivel couplers
9.5 Testing of the torsional rigidity of right angle
      couplers
9.6 Tensile tests on friction type sleeve couplers
9.7 Bending load capacity testing of class B sleeve
      couplers
9.8 Tensile testing of sleeve couplers with sheer
      pins
9.9 Testing of behaviour under load of parallel
      couplers
9.10 Determination of the ultimate load for parallel
      couplers
Tables
1. Summary of requirements for testing the behaviour
    under load of prototype couplers specified in
    clauses 8 and 9
2. Examples of sampling plans for inspection by
    attributes
3. Examples of sampling plans for inspection by
    variables
4. Flow diagram giving instructions for random
    sampling when testing the behaviour of right angle
    couplers, swivel couplers, sleeve couplers or
    parallel couplers by attributes or by variables
Figures
1. Maximum clearance between centring device and tube
2. Operating characteristics
3. Test apparatus
    a) to test the behaviour under load of right angle
        couplers
    b) to test the behaviour under load of swivel
        couplers
    c) to determine the ultimate load of right angle
        and swivel couplers
4. Test apparatus to determine the torsional rigidity
    of right angle couplers
5. Angle of rotation phi against the torque M for
    class B right angle couplers
6. Test apparatus for tensile testing of sleeve
    couplers
7. Test apparatus for bending load capacity testing
    of class B sleeve couplers
8. Test apparatus for investigating the behaviour
    under load of parallel couplers
9. Test apparatus to determine the ultimate load of
    parallel couplers

Requirements for materials and design and test procedures for couplers, loose spigots and base plates used for connecting steel tubes of 48.3 mm outside diameter and of at least 3.2 mm nominal wall thickness.

Committee
B/514
DevelopmentNote
Supersedes 85/15498 DC and BS 1139-2(1982). Also numbered as EN 74. (06/2005)
DocumentType
Standard
Pages
28
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

EN 12811-1:2003 Temporary works equipment - Part 1: Scaffolds - Performance requirements and general design
BS 1139-3:1994 Metal scaffolding Specification for prefabricated mobile access and working towers
BS 5973:1993 Code of practice for access and working scaffolds and special scaffold structures in steel
07/30016130 DC : 0 BS 5974 - CODE OF PRACTICE FOR THE PLANNING, DESIGN, SETTING UP AND USE OF TEMPORARILY INSTALLED SUSPENDED ACCESS EQUIPMENT
BS 1139-2.2:1991 Metal scaffolding. Couplers Specification for steel and aluminium couplers, fittings and accessories for use in tubular scaffolding
BS 7885:1997 Code of practice for safe entry into silos
BS EN 12811-1:2003 Temporary works equipment Scaffolds. Performance requirements and general design
BS 5975:1996 Code of practice for falsework

ISO 272:1982 Fasteners — Hexagon products — Widths across flats
BS 1139-2.2:1991 Metal scaffolding. Couplers Specification for steel and aluminium couplers, fittings and accessories for use in tubular scaffolding
BS 6001-1(1999) : 1999 SAMPLING PROCEDURES FOR INSPECTION BY ATTRIBUTES - PART 1: SAMPLING SCHEMES INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION
BS 6002:1979 Specification for sampling procedures and charts for inspection by variables for percent defective
BS 1139-1.1:1990 Metal scaffolding. Tubes Specification for steel tube

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