EN 12813:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Temporäre Konstruktionen für Bauwerke - Stützentürme aus vorgefertigten Bauteilen - Besondere BemessungsverfahrenEquipements temporaires de chantiers - Tours d'étaiement en composants préfabriqués - Méthodes particulieres de calcul des structuresTemporary works equipment - Load bearing towers of prefabricated components - Particular methods of structural design91.220Gradbena opremaConstruction equipmentICS:Ta slovenski standard je istoveten z:EN 12813:2004SIST EN 12813:2004en01-oktober-2004SIST EN 12813:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12813June 2004ICS 91.220English versionTemporary works equipment - Load bearing towers ofprefabricated components - Particular methods of structuraldesignEquipements temporaires de chantiers - Tours d'étaiementen composants préfabriqués - Méthodes particulières decalcul des structuresTemporäre Konstruktionen für Bauwerke - Stützentürmeaus vorgefertigten Bauteilen - BesondereBemessungsverfahrenThis European Standard was approved by CEN on 4 December 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12813:2004: ESIST EN 12813:2004

Procedure for analysis by first order theory of a fully triangulated load bearing tower.13 A.1 Example chosen.13 A.2 Determination of the buckling load, Fcr for one face of the tower.13 A.3 Structural analysis by first order theory.13 Annex B (normative)
Global test procedure.15 B.1 Introduction.15 B.2 Apparatus.15 B.3 Choice of components.15 B.4 Assembly of test tower.15 B.5 Test procedure.17 B.6 Data to be recorded.17 B.7 Additional requirements when a horizontal load is also applied.17
Introduction This European Standard is intended to provide information for those who specify load bearing towers made from prefabricated components and for the designer who has to prepare a scheme for their use. This European Standard will be of interest to those who wish to develop particular items, or groups of items for load bearing towers of prefabricated components. This European Standard describes how to establish structural data for load bearing towers made from prefabricated components.
Most of the figures illustrating the standard are of a particular type of tower but the procedures described are applicable to all towers. There is a requirement for a global test to demonstrate that the modelling adopted in the analysis is sufficiently accurate and on the conservative side. For materials this standard refers only to valid European Standards. However a large stock of equipment made of materials conforming to standards no longer valid is in use. This standard does not cover the use of this equipment. NOTE This European Standard does not give information on site activities nor about safety requirements, for which reference should be made to E.C. directives, and national documents. SIST EN 12813:2004

restrained or free. This European Standard specifies two methods of analysis, by
first order theory, or by
second order theory. NOTE For definitions and requirements relating to structures and materials of the structure, specifications and loads, see EN 12812. The European Standard is not intended for towers constructed with tubes and couplers: it is expected that they will be designed in accordance with EN 12812. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). ENV 1993-1-1, Eurocode 3 —- Design of steel structures — Part 1-1: General rules and rules for buildings. ENV 1999-1-1, Eurocode 9 — Design of aluminium structures Part 1-1: General rules - General rules and rules for buildings. EN 12810-2, Façade scaffolds made of prefabricated components — Part 2: Particular methods of structural design EN 12811-2, Temporary works equipment - Part 2: Information on materials. EN 12811-3:2002, Temporary works equipment - Part 3: Load testing. EN 12812:2004, Falsework —
Performance requirements and general design.
3 Terms and definitions For the purposes of this European Standard, the terms an definitions of EN 12812 and the following apply. 3.1 base plate plate used for spreading the load in a standard over a greater area
3.2 base jack base plate which has means of vertical adjustment NOTE It is intended to be positioned at the base of an upright. It usually incorporates a base plate. SIST EN 12813:2004

3.4 fork head "U" shaped component for holding a beam NOTE It is intended to be positioned at the top of an upright for locating and supporting a horizontal beam. 3.5 frame component which has at least one horizontal element permanently fixed to at least one upright element
3.6 fully triangulated load bearing tower tower in which a diagonal member is attached to each panel including either braced or unbraced jacks (see Figures 1a, 1b, 2) NOTE A panel is bounded by two adjacent vertical and two adjacent horizontal members. The diagonals are considered to create full triangulation to each vertical plane, if they are attached within 200 mm of each node point. 3.7 head jack screw device both able to adjust height and to release the tower from the loading. NOTE It is intended to be positioned at the top of an upright. It usually incorporates a fork head. 3.8 horizontal member component forming a horizontal connection between two uprights.
NOTE An upright may either be the vertical linear element of frames, or vertical components of a modular system. 3.9 load bearing tower tower with three or more uprights made of prefabricated steel or aluminium alloy components NOTE The components are principally linear members or frames. 3.10 loading beam horizontal member positioned above the primary beams onto which the vertical imposed test load is centrally applied 3.11 not fully triangulated load bearing tower tower in which not all vertical planes are fully
triangulated (see Figures 3a, 3b) 3.12 prefabricated component discrete part of a tower with permanently fixed connection devices which pre-determine dimensions SIST EN 12813:2004

upright vertical load bearing element
a) with braced head jacks b) with unbraced jacks Figure 1 — Examples of fully triangulated towers
Figure 2 — Eccentricity "e" of the diagonals to members SIST EN 12813:2004

a) with braced head jacks b) with unbraced jacks Figure 3 — Examples of not fully triangulated towers 4 Symbols Table 1 — Symbols Number Symbol Denomination Unit 1 A Cross-sectional area mm² 2 d Horizontal displacement mm 3 e Eccentricity mm 4 E Longitudinal modulus of elasticity N/mm² 5 F External
load applied to the structure N 6 FH Horizontal
load applied to the structure N 7 FHd Design value of the horizontal load N 8 Fv Vertical load applied to the structure N 9 Fvd Design value of the vertical load N 10 Fcr Buckling load of a face N 11 ƒy nom Nominal yield stress N/mm² 12 H, h Height m 13 L Length m 14 n Number of uprights in a tower
15 Rd Design value of resistance N/mm² 16 Sd Design value of the effects of actions N/mm² 17 γF Partial
factor for the actions
18 γM Partial
factor for resistance
19 αcr The lowest elastic buckling load factor to be applied to the design loads
clause 5, (
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