Couplers, spigot pins and baseplates for use in falsework and scaffolds - Part 1: Couplers for tubes - Requirements and test procedures

This document specifies, for right angle couplers, swivel couplers, sleeve couplers and parallel couplers working by friction:
—   materials;
—   design requirements;
—   strength classes with different structural parameters including values for resistance and stiffness;
—   test procedures;
—   assessment;
and gives:
—   recommendations for ongoing production control.
These couplers are intended for use in temporary works equipment for example in scaffolds erected in accordance with EN 12811 1 and falsework erected in accordance with EN 12812.

Kupplungen, Zentrierbolzen und Fußplatten für Arbeitsgerüste und Traggerüste - Teil 1: Rohrkupplungen - Anforderungen und Prüfverfahren

Raccords, goujons d’assemblage et semelles pour étaiements et échafaudages - Partie 1 : Raccords de tubes - Exigences et modes opératoires d’essai

Spojke, vezne centične spojke in podnožne plošče za delovne in nosilne odre - 1. del: Cevne spojke - Zahteve in preskusni postopki - Dopolnilo A1

General Information

Status
Not Published
Publication Date
01-Jul-2026
ICS
91.220 - Construction equipment
Technical Committee
CEN/TC 53 - Temporary works equipment
Drafting Committee
CEN/TC 53 - Temporary works equipment
Current Stage
4060 - Closure of enquiry - Enquiry
Start Date
24-Oct-2024
Due Date
22-Oct-2024
Completion Date
24-Oct-2024
Ref Project
SIST EN 74-1:2022/oprA1:2024 - Couplers, spigot pins and baseplates for use in falsework and scaffolds - Part 1: Couplers for tubes - Requirements and test procedures

Relations

Merged Into
EN 74-1:2022+A1:2025 - Couplers, spigot pins and baseplates for use in falsework and scaffolds - Part 1: Couplers for tubes - Requirements and test procedures
Effective Date
26-Feb-2025
Amends
EN 74-1:2022 - Couplers, spigot pins and baseplates for use in falsework and scaffolds - Part 1: Couplers for tubes - Requirements and test procedures
Effective Date
17-Jan-2024

Overview

EN 74-1:2022/prA1 (CEN) is a draft amendment to the European standard EN 74-1:2022 covering couplers for tubes used in temporary works such as falsework and scaffolds. The document defines requirements and test procedures for friction-working couplers - including right angle couplers, swivel couplers, sleeve couplers and parallel couplers - and provides guidance on materials, design, strength classes (resistance and stiffness), assessment and ongoing production control. The amendment (prA1) updates the evaluation of test results and references statistical assessment in EN 12811-3.

Key topics and requirements

  • Scope: Applies to tube couplers intended for scaffolding (EN 12811-1) and falsework (EN 12812).
  • Materials & design requirements: Specifies basic material and design expectations for couplers that function by friction (no specific materials invented here - see standard for details).
  • Strength classes and structural parameters: Defines strength classes with associated values for resistance and stiffness to classify coupler performance.
  • Test procedures: Sets out mechanical testing methods and load/displacement criteria (test loads P at displacements per Table 8 in the standard).
  • Evaluation of test results (prA1 change):
    • Test loads P at specified displacements are to be evaluated.
    • For a given displacement Δ, the lowest measured force between 1 mm and 2 mm is taken for P.
    • Results must be analysed statistically per EN 12811-3 to determine the 5% quantile (F5%).
    • Test outcomes from clause 7.2.1.4 b) are excluded from statistical evaluation.
    • The F5% value shall not be less than the specified value in Table 8.
  • Production control recommendations: Advises on ongoing production monitoring to maintain conformity.

Applications and users

Who uses EN 74-1:2022/prA1:

  • Manufacturers of scaffolding and falsework couplers (product design, type testing, quality control)
  • Testing laboratories and conformity assessment bodies (mechanical testing and statistical evaluation)
  • Engineers, site managers and specifiers (selecting couplers that meet required strength classes)
  • Safety and compliance teams ensuring temporary works meet European standards

Practical uses:

  • Verifying coupler resistance and stiffness for safe scaffold and falsework design
  • Determining compliance criteria for procurement and certification
  • Establishing routine production testing and acceptance criteria

Related standards

  • EN 74 series (other parts) - for spigot pins and baseplates
  • EN 12811-1 - performance requirements and general design for scaffolds
  • EN 12812 - falsework performance and design
  • EN 12811-3 - referenced for statistical evaluation of test results

Keywords: EN 74-1, couplers, scaffolding couplers, falsework couplers, test procedures, strength classes, CEN, production control, EN 12811, EN 12812.

Frequently Asked Questions

EN 74-1:2022/prA1 is a draft published by the European Committee for Standardization (CEN). Its full title is "Couplers, spigot pins and baseplates for use in falsework and scaffolds - Part 1: Couplers for tubes - Requirements and test procedures". This standard covers: This document specifies, for right angle couplers, swivel couplers, sleeve couplers and parallel couplers working by friction: — materials; — design requirements; — strength classes with different structural parameters including values for resistance and stiffness; — test procedures; — assessment; and gives: — recommendations for ongoing production control. These couplers are intended for use in temporary works equipment for example in scaffolds erected in accordance with EN 12811 1 and falsework erected in accordance with EN 12812.

This document specifies, for right angle couplers, swivel couplers, sleeve couplers and parallel couplers working by friction: — materials; — design requirements; — strength classes with different structural parameters including values for resistance and stiffness; — test procedures; — assessment; and gives: — recommendations for ongoing production control. These couplers are intended for use in temporary works equipment for example in scaffolds erected in accordance with EN 12811 1 and falsework erected in accordance with EN 12812.

EN 74-1:2022/prA1 is classified under the following ICS (International Classification for Standards) categories: 91.220 - Construction equipment. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 74-1:2022/prA1 has the following relationships with other standards: It is inter standard links to EN 74-1:2022+A1:2025, EN 74-1:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

You can purchase EN 74-1:2022/prA1 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.

Standards Content (Sample)


SLOVENSKI STANDARD
01-oktober-2024
Spojke, vezne centične spojke in podnožne plošče za delovne in nosilne odre - 1.
del: Cevne spojke - Zahteve in preskusni postopki - Dopolnilo A1
Couplers, spigot pins and baseplates for use in falsework and scaffolds - Part 1:
Couplers for tubes - Requirements and test procedures
Kupplungen, Zentrierbolzen und Fußplatten für Arbeitsgerüste und Traggerüste - Teil 1:
Rohrkupplungen - Anforderungen und Prüfverfahren
Raccords, goujons d’assemblage et semelles pour étaiements et échafaudages - Partie
1 : Raccords de tubes - Exigences et modes opératoires d’essai
Ta slovenski standard je istoveten z: EN 74-1:2022/prA1
ICS:
21.120.20 Sklopke Couplings
91.220 Gradbena oprema Construction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
EN 74-1:2022
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
August 2024
ICS 91.220
English Version
Couplers, spigot pins and baseplates for use in falsework
and scaffolds - Part 1: Couplers for tubes - Requirements
and test procedures
Raccords, goujons d'assemblage et semelles pour Kupplungen, Zentrierbolzen und Fußplatten für
étaiements et échafaudages - Partie 1 : Raccords de Arbeitsgerüste und Traggerüste - Teil 1:
tubes - Exigences et modes opératoires d'essai Rohrkupplungen - Anforderungen und Prüfverfahren
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 53.

This draft amendment A1, if approved, will modify the European Standard EN 74-1:2022. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greec
...

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