EN 74-3:2007

Couplers, spigot pins and baseplates for use in falsework and scaffolds - Part 3: Plain base plates and spigot pins - Requirements and test procedures

EN 74-3 specifies for non adjustable base plates and loose spigots to be used with 48,3 mm diameter tubes in scaffolds and falsework:
-   materials;
-   design requirements;
-   test procedure;
-   assessment.
A base plate with a means of limited vertical adjustment, called a "base jack", is dealt with in EN 12811 1.
NOTE   In the text of this standard, the term "loose spigot" is used instead of the "spigot pin" in the title.

Kupplungen, Zentrierbolzen und Fußplatten für Arbeitsgerüste und Traggerüste - Teil 3: Ebene Fußplatten und Zentrierbolzen - Anforderungen und Prüfverfahren

Diese Europäische Norm legt für ebene und profilierte Fußplatten sowie für Zentrierbolzen zur Anwendung in Arbeits  und Traggerüsten aus Rohren mit einem Durchmesser von 48,3 mm fest:
   die Werkstoffe;
   die konstruktiven Anforderungen;
   die Versuchsdurchführungen;
                die Beurteilung.
Eine Fußplatte mit einer Vorrichtung zur Höhenverstellung, Fußspindel genannt, wird in EN 12811 1 behandelt.

Raccords, goujons et semelles pour étaiements et échafaudages - Partie 3 : Semelles et goujons - Exigences et modes opératoires d'essais

La présente Norme européenne prescrit les exigences relatives aux semelles simples et profilées et aux goujons libres utilisés dans les échafaudages de service et d’étaiement à tubes de 48,3 mm de diamètre :
   matériaux ;
   exigences de conception ;
   modes opératoires d’essai ;
   évaluation.
Les semelles à réglage vertical, désignées « socles réglables », sont traitées dans l’EN 12811-1.
NOTE   Dans le texte de cette norme, le terme « goujon libre » est utilisé à la place de « goujon ».

Spojke, spojni čepi in podnožne plošče za nosilne in delovne odre - 3. del: Ravne podnožne plošče in spojni čepi - Zahteve in načini preskušanja

General Information

• Status: Published
• Publication Date: 17-Apr-2007
• Withdrawal Date: 30-Oct-2007
• ICS: 91.220 - Construction equipment
• Technical Committee: CEN/TC 53 - Temporary works equipment
• Drafting Committee: CEN/TC 53/WG 3 - Tubes and fittings
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 04-Mar-2024
• Completion Date: 14-Apr-2025
• Ref Project: SIST EN 74-3:2007 - Couplers, spigot pins and baseplates for use in falsework and scaffolds - Part 3: Plain base plates and spigot pins - Requirements and test procedures

Relations

• Replaces: EN 74:1988 - Couplers, loose spigots and base-plates for use in working scaffolds and falsework made of steel tubes - Requirements and test procedures
• Effective Date: 22-Dec-2008
• Parent: EN 74-1:2005 - Couplers, spigot pins and baseplates for use in falsework and scaffolds - Part 1: Couplers for tubes - Requirements and test procedures
• Effective Date: 22-Dec-2008

Overview

EN 74-3:2007 (CEN) - "Couplers, spigot pins and baseplates for use in falsework and scaffolds - Part 3: Plain base plates and spigot pins - Requirements and test procedures" defines requirements and test procedures for plain base plates and loose spigots (spigot pins) intended for use with 48.3 mm diameter scaffold and falsework tubes. The standard covers materials, design requirements, production control, force‑displacement testing and assessment, marking, designation and required product documentation.

Key topics and technical requirements

• Scope & terminology
  • Applies to plain and profiled base plates and loose spigots for 48.3 mm tubes. The term “loose spigot” is used in the text instead of “spigot pin”.
• Materials and corrosion protection
  • Ferrous materials in line with EN 74-1; aluminium alloys permitted.
  • Electrolytic zinc coating type C: average thickness 15 µm.
• Design requirements
  • Base plate comprises a plate and a centring device; centring device minimum 50 mm length.
  • Maximum radial play of reference tube: 11 mm.
  • Plate symmetry and inscribed circle radius r = 70–80 mm.
  • Minimum flat plate thicknesses deemed acceptable: steel S235 ≥ 5 mm, aluminium alloy with proof stress 195 N/mm² ≥ 7 mm.
  • Loose spigot: collar outer diameter 47.0–47.8 mm, body diameter 35.0–37.5 mm (cruciform up to 38.7 mm), collar/axis concentricity ±1.0 mm, insertion length at least 75 mm into tubes either side of collar.
• Test procedures (base plates)
  • Minimum 3 tests, samples randomly selected from a batch ≥ 500 (ISO 2859-10).
  • Test arrangement: plate on circular support, force applied centrally to tube.
  • Preload 0.3 kN; increase test load at ≤ 0.1 kN/s; displacement rate ≤ 1.0 mm/min.
  • Stop when load P reaches 30 kN or central deflection f reaches 5 mm. Record force‑displacement curve.
• Production, marking and documentation
  • Manufacturer drawings, production control, product manual (incl. identification, assessor, usage and damage instructions, declaration of conformity).
  • Marking: “EN 74-3”, manufacturer name/trademark, year (last two digits). Characters ≥ 4.0 mm high, ≥ 0.2 mm deep.
  • Example designation: EN 74-3 BP C (base plate with corrosion protection type C).

Applications and users

• Practical use: selection, testing and certification of base plates and loose spigots for scaffolding, falsework, temporary works and construction support systems.
• Primary users: scaffold and falsework manufacturers, temporary works engineers, site safety managers, testing laboratories, conformity assessors, procurement/specifiers and regulatory inspectors.

Related standards

• EN 74-1:2005 (couplers for tubes)
• EN 12811-1:2003 (scaffolds - performance & design)
• EN 12811-2:2004 (materials information)
• EN 12811-3 (load testing)
• ISO 2859-10 (sampling procedures)

Keywords: EN 74-3:2007, base plates, loose spigots, spigot pins, scaffolds, falsework, CEN, test procedures, force‑displacement, 48.3 mm tubes.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2007
6SRMNHVSRMQLþHSLLQSRGQRåQHSORãþH]DQRVLOQHLQGHORYQHRGUHGHO5DYQH
SRGQRåQHSORãþHLQVSRMQLþHSL=DKWHYHLQQDþLQLSUHVNXãDQMD
Couplers, spigot pins and baseplates for use in falsework and scaffolds - Part 3: Plain
base plates and spigot pins - Requirements and test procedures
Kupplungen, Zentrierbolzen und Fußplatten für Arbeitsgerüste und Traggerüste - Teil 3:
Ebene Fußplatten und Zentrierbolzen - Anforderungen und Prüfverfahren
Raccords, goujons d'assemblages et semailles pour étaiement et échafaudages de
service - Partie 3: Semelles planes et goujons - Exigences de performances et méthode
d'essai
Ta slovenski standard je istoveten z: EN 74-3:2007
ICS:
91.220 Gradbena oprema Construction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 74-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2007
ICS 91.220 Supersedes EN 74:1988
English Version
Couplers, spigot pins and baseplates for use in falsework and
scaffolds - Part 3: Plain base plates and spigot pins -
Requirements and test procedures
Raccords, goujons d'assemblages et semailles pour Kupplungen, Zentrierbolzen und Fußplatten für
étaiement et échafaudages de service - Partie 3: Semelles Arbeitsgerüste und Traggerüste - Teil 3: Ebene Fußplatten
planes et goujons - Exigences de performances et méthode und Zentrierbolzen - Anforderungen und Prüfverfahren
d'essai
This European Standard was approved by CEN on 15 March 2007.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 74-3:2007: E
worldwide for CEN national Members.

Contents Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Symbols .6
5 Requirements for structural properties.7
6 Reference tube.7
7 General requirements.7
7.1 Materials .7
7.2 Design .7
7.3 Production.9
8 Test method and evaluation of results for a base plate .9
8.1 General.9
8.2 Purpose of test.9
8.3 Arrangement of test.9
8.4 Test method.10
8.5 Data to be recorded .10
8.6 Evaluation of test results .10
9 Designation .11
10 Marking .11
11 Test report and test certification.11
12 Product manual.11

Foreword
This document (EN 74-3:2007) has been prepared by Technical Committee CEN/TC 53 “Temporary works
equipment”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by October 2007, and conflicting national standards shall be withdrawn at
the latest by October 2007.
This document together with EN 74-1:2005 supersedes EN 74:1988.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and United Kingdom.
Introduction
EN 74, “Couplers, spigot pins and base plates for use in falsework and scaffolds”, consists of the following
parts:
Part 1 – Couplers for tubes – Requirements and test procedures
Part 2 – Special couplers – Requirements and test procedures
Part 3 – Plain base plates and spigot pins – Requirements and test procedures
1 Scope
EN 74-3 specifies for plain and profiled base plates and loose spigots to be used with 48,3 mm diameter tubes
in scaffolds and falsework:
 materials;
 design requirements;
 test procedure;
 assessment.
A base plate with a means of limited vertical adjustment, called a “base jack”, is dealt with in EN 12811-1.
NOTE In the text of this standard, the term “loose spigot” is used instead of the “spigot pin” in the title.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 74-1:2005, Couplers, spigot pins and baseplates for use in falsework and scaffolds - Part 1: Couplers for
tubes - Requirements and test procedures
EN 12811-1:2003, Temporary works equipment - Part 1: Scaffolds – Performance requirements and ge
...