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BS EN 74-1:2022 Couplers, spigot pins and baseplates for use in falsework and scaffolds - Couplers for tubes. Requirements and test procedures, 2022
- undefined
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and symbols [Go to Page]
- 3.1 Terms and definitions
- 3.2 Symbols and abbreviations
- 4 Types and classes of couplers [Go to Page]
- 4.1 Types of couplers
- 4.2 Classes of couplers [Go to Page]
- 4.2.1 General
- 4.2.2 Transmissible internal forces, moments and related stiffnesses
- 5 Reference tubes and bar for coupler tests
- 6 General requirements [Go to Page]
- 6.1 Materials
- 6.2 Design
- 6.3 Manufacturer’s drawings
- 6.4 Production control
- 7 Test methods and evaluation of results [Go to Page]
- 7.1 General
- 7.2 Slipping and failure force [Go to Page]
- 7.2.1 Slipping force Fs (RA,SW,PA,SF) [Go to Page]
- 7.2.1.1 Purpose of test
- 7.2.1.2 Test arrangements
- 7.2.1.3 Requirements for initial load
- 7.2.1.4 Test procedure
- 7.2.1.5 Evaluation of test results
- 7.2.2 Failure force Ff (RA,SW,PA) [Go to Page]
- 7.2.2.1 Purpose of test
- 7.2.2.2 Test arrangements
- 7.2.2.3 Test procedure
- 7.2.2.4 Evaluation of test results
- 7.3 Pull apart force Fp (RA) [Go to Page]
- 7.3.1 Purpose of test
- 7.3.2 Test arrangement
- 7.3.3 Test procedure
- 7.3.4 Evaluation of test results
- 7.4 Stiffnesses and moments [Go to Page]
- 7.4.1 Cruciform bending stiffness cφ1,MB and cφ2,MB and cruciform bending moment MB (RA) [Go to Page]
- 7.4.1.1 Purpose of test
- 7.4.1.2 Test arrangements
- 7.4.1.3 Test procedure
- 7.4.1.4 Evaluation of test results
- 7.4.2 Rotational moment MT and stiffness cφ,MT (RA) [Go to Page]
- 7.4.2.1 Purpose of test
- 7.4.2.2 Test arrangements
- 7.4.2.3 Requirements for initial load
- 7.4.2.4 Test procedure
- 7.4.2.5 Evaluation of test results
- 7.4.3 Bending moment MB (SF) [Go to Page]
- 7.4.3.1 Purpose of test
- 7.4.3.2 Test arrangement
- 7.4.3.3 Test procedure
- 7.4.3.4 Evaluation of test results
- 7.5 Indentation (RA,SW,PA) [Go to Page]
- 7.5.1 Purpose of test
- 7.5.2 Test arrangement
- 7.5.3 Test procedure
- 7.5.4 Evaluation of test results
- 8 Designation
- 9 Marking
- 10 Test report
- 11 Evaluation of test results
- 12 Assessment
- 13 Product manual
- Annex A (normative)Whitworth thread size 1/2 x 12 Tpi [Go to Page]
- A.1 Nominal values
- A.2 Tolerances and limiting dimensions after coating
- Annex B (informative)Ongoing production control [Go to Page]
