Falsework - Performance requirements and general design

This European Standard specifies performance requirements and limit state design methods for two design classes of falsework.
It sets out the rules that have to be taken into account to produce a safe falsework structure.
It also provides information where falsework is required to support a "permanent structure", or where the design or supply of falsework has to be commissioned.
This European Standard also gives information on foundations.
This European Standard does not specify requirements for formwork, although formwork may be a part of the falsework construction. Nor does it provide information on access and working scaffolds, which is given in EN 12811-1.
This European Standard does not provide information about site activities. It does not provide information about the use of some standardized products, including timber formwork beams conforming to EN 13377 and props conforming to EN 1065.

Traggerüste - Anforderungen, Entwurf und Bemessung

Diese Europäische Norm legt Anforderungen und Verfahren für die Bemessung von Traggerüsten im Grenz¬zustand der Tragfähigkeit für zwei Bemessungsklassen fest.
Sie gibt die Regeln an, die für den Aufbau und die Verwendung von Traggerüsten zu beachten sind.
Sie gibt weiterhin Angaben für den Fall, dass Traggerüste zur temporären Unterstützung von „bestehenden Bauwerken/Bauteilen benötigt werden.
Diese Europäische Norm enthält auch Angaben zu Gründungen.
Die vorliegende Europäische Norm legt keine spezifischen Anforderungen an Schalungen fest, obwohl diese Teil der Trag¬gerüstkonstruktion sein können. Sie formuliert ebenfalls keine Angaben zum Zugang und zu Arbeitsgerüsten; die entsprechenden Angaben sind in EN 12811-1 zu finden.
Diese Europäische Norm enthält keine Angaben zu Arbeiten auf der Baustelle. Sie macht keine Angaben zur Verwendung genormter Produkte auf der Baustelle, einschließlich Schalungsträger aus Holz nach EN 13377 und Baustützen aus Stahl mit Ausziehvorrichtung nach EN 1065.

Etaiements - Exigences de performance et méthodes de conception et calculs

La présente Norme européenne spécifie les exigences de performance et les méthodes de conception et calcul aux états limites pour trois classes d'étaiement.
Elle définit les règles que doit respecter le concepteur pour prendre en compte la réalisation d'une structure d'étaiement sûre.
Elle donne également des informations lorsque l'étaiement est requis pour supporter une « structure permanente », ou lorsque le calcul ou la livraison de l'étaiement doit être commissionné(e).
La présente Norme européenne donne également des informations sur les fondations.
La présente Norme européenne ne spécifie pas les exigences relatives aux coffrages, bien que ces derniers puissent faire partie d'une construction d'étaiement. Elle ne fournit pas non plus d'informations sur les tours d’accès et les parties constituées d’échafaudages de travail, qui sont spécifiées dans l’EN 12811-1.
La présente Norme européenne ne donne pas d'informations sur les activités sur site. Elle ne fournit pas d'informations sur l'utilisation de certains produits normalisés, comprenant notamment les poutrelles de coffrage en bois conformes à l'EN 13377 et les étais conformes à l'EN 1065.

Nosilni odri - Zahtevane lastnosti in projektiranje

General Information

Status
Published
Publication Date
15-Jul-2008
Withdrawal Date
30-Jan-2009
ICS
91.220 - Construction equipment
Technical Committee
CEN/TC 53 - Temporary works equipment
Drafting Committee
CEN/TC 53/WG 6 - Performance requirements for falsework
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
04-Mar-2024
Completion Date
14-Apr-2025
Ref Project
SIST EN 12812:2008 - Falsework - Performance requirements and general design

Relations

Replaces
EN 12812:2004 - Falsework - Performance requirements and general design
Effective Date
22-Dec-2008

Overview

EN 12812:2008 - Falsework: Performance requirements and general design is a CEN European Standard that sets out performance requirements and limit‑state design methods for temporary structural supports (falsework). It specifies rules to produce safe falsework systems used to support freshly placed concrete, structural elements during erection, and temporary storage loads. The standard defines two main design classes (A and B, with B split into B1 and B2), design principles, material requirements, connection rules and guidance on foundations - while explicitly excluding detailed formwork, access/working scaffolds and certain standardized products.

Key topics and requirements

  • Design classes
    • Class A: Simplified/descriptive design for simple slab and beam cases (e.g., slab area ≤ 0.3 m² per metre width, beam area ≤ 0.5 m², clear span ≤ 6.0 m, height ≤ 3.5 m).
    • Class B: Full structural design in accordance with the Eurocodes; subdivided into B1 (detailed Eurocode‑based design) and B2 (simplified design procedures achieving equivalent safety).
  • Limit state and performance approach: Designs use limit‑state methods aligned with the relevant Eurocodes (EN 1990 - EN 1999) and companion clauses in EN 12812.
  • Materials and fabrication
    • Only materials with established properties and conformity to product standards.
    • Minimum nominal thickness for steel/aluminium components: 2 mm.
    • Weldability requirements and adherence to EN 1090 for metal structures.
  • Connections and stability
    • Connections must not disconnect unintentionally; vertical spigot overlaps ≥ 150 mm are deemed secure.
    • Jack overlap provisions (refer to Clause 9.3.2) and guidance on tower flexibility and imperfections.
  • Foundations and ground transfer: Provides rules and information for transmitting falsework loads into the subsoil or load‑bearing substructures.
  • Documentation: Design briefs must include site data, loading (e.g., fresh concrete), erection/dismantling procedures and ground information.

Practical applications and users

EN 12812:2008 is intended for:

  • Temporary works and structural engineers designing falsework systems.
  • Contractors and site managers specifying and commissioning falsework.
  • Falsework suppliers and fabricators ensuring materials, connections and component dimensions meet the standard.
  • Safety officers and inspectors verifying compliance with performance and documentation requirements. Common uses include in‑situ concrete support, temporary support during erection or maintenance, and temporary storage support where falsework must reliably carry construction loads.

Related standards

  • Eurocodes: EN 1990 - EN 1999 (basis, actions, steel, geotechnical, seismic, aluminium)
  • Execution and welding: EN 1090‑2 / EN 1090‑3
  • Scaffolds and temporary works: EN 12811‑1, EN 12810‑1, EN 12813
  • Component/product standards: EN 74, EN 1065, EN 13377

EN 12812:2008 is an essential reference for safe, verifiable falsework design and selection of temporary support systems in European construction projects.

Frequently Asked Questions

EN 12812:2008 is a standard published by the European Committee for Standardization (CEN). Its full title is "Falsework - Performance requirements and general design". This standard covers: This European Standard specifies performance requirements and limit state design methods for two design classes of falsework. It sets out the rules that have to be taken into account to produce a safe falsework structure. It also provides information where falsework is required to support a "permanent structure", or where the design or supply of falsework has to be commissioned. This European Standard also gives information on foundations. This European Standard does not specify requirements for formwork, although formwork may be a part of the falsework construction. Nor does it provide information on access and working scaffolds, which is given in EN 12811-1. This European Standard does not provide information about site activities. It does not provide information about the use of some standardized products, including timber formwork beams conforming to EN 13377 and props conforming to EN 1065.

This European Standard specifies performance requirements and limit state design methods for two design classes of falsework. It sets out the rules that have to be taken into account to produce a safe falsework structure. It also provides information where falsework is required to support a "permanent structure", or where the design or supply of falsework has to be commissioned. This European Standard also gives information on foundations. This European Standard does not specify requirements for formwork, although formwork may be a part of the falsework construction. Nor does it provide information on access and working scaffolds, which is given in EN 12811-1. This European Standard does not provide information about site activities. It does not provide information about the use of some standardized products, including timber formwork beams conforming to EN 13377 and props conforming to EN 1065.

EN 12812:2008 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 12812:2008 has the following relationships with other standards: It is inter standard links to EN 12812:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

You can purchase EN 12812:2008 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)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Nosilni odri - Zahtevane lastnosti in projektiranjeTraggerüste - Anforderungen, Entwurf und BemessungEtaiements - Exigences de performance et méthodes de conception et calculsFalsework - Performance requirements and general design91.220Gradbena opremaConstruction equipmentICS:Ta slovenski standard je istoveten z:EN 12812:2008SIST EN 12812:2008en,fr01-oktober-2008SIST EN 12812:2008SLOVENSKI
STANDARDSIST EN 12812:20041DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12812July 2008ICS 91.220Supersedes EN 12812:2004
English VersionFalsework - Performance requirements and general designEtaiements - Exigences de performance et méthodes deconception et calculsTraggerüste - Anforderungen, Bemessung und EntwurfThis European Standard was approved by CEN on 7 June 2008.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 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12812:2008: ESIST EN 12812:2008

Relation with site activities.40 Annex B (informative).41 Bibliography.42
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 the United Kingdom. SIST EN 12812:2008

Introduction Most falsework is used:  to carry the loads due to freshly poured concrete for permanent structures until these structures have reached a sufficient load bearing capacity;  to absorb the loads from structural members, plant and equipment which arise during the erection, maintenance, alteration or removal of buildings or other structures;  additionally, to provide support for the temporary storage of building materials, structural members and equipment. This European Standard gives performance requirements for specifying and using falsework and gives methods to design falsework to meet those requirements. Clause 9 provides design methods. It also gives simplified design methods for falsework made of tubes and fittings. The information on structural design is supplementary to the relevant Structural Eurocodes. The standard describes different design classes. This allows the designer to choose between more or less complex design methods, while achieving the same level of structural safety. Provision for specific safety matters is dealt with in EN 12811-1 and other documents. SIST EN 12812:2008

EN 74-1, Couplers, spigot pins and baseplates for use in falsework and scaffolds — Part 1: Couplers for tubes — Requirements and test procedures prEN 74-2, Couplers, spigot pins and baseplates for use in falsework and scaffolds — Part 2: Special couplers — Requirements and test procedures EN 74-3, Couplers, spigot pins and baseplates for use in falsework and scaffolds — Part 3: Plain base plates and spigot pins — Requirements and test procedures EN 1065:1998, Adjustable telescopic steel props — Product specifications, design and assessment by calculation and tests EN 1090-2, Execution of steel structures and aluminium structures - Part 2: Technical requirements for steel structures EN 1090-3, Execution of steel structures and aluminium structures - Part 3: Technical requirements for aluminium structures EN 1990, Eurocode — Basis of structural design EN 1991 (all parts), Eurocode 1 — Actions on structures EN 1993-1-1:2005, Eurocode 3: Design of steel structures - Part 1-1: General rules and rules for buildings EN 1997 (all parts), Eurocode 7 — Geotechnical design EN 1998 (all parts), Eurocode 8 — Design of structures for earthquake resistance EN 1999 (all parts), Eurocode 9 — Design of aluminium structures SIST EN 12812:2008

NOTE 1 A bow imperfection can occur both in an individual member and in the complete tower or modular beam assembly. It arises because the member is not straight, is manufactured not straight or members are assembled out of alignment. NOTE 2 These are the values for design purposes and may be more than the erection tolerance. 3.8 node theoretical intersection point of members SIST EN 12812:2008

4 Design classes 4.1 General The design shall be in accordance with one of the classes: A or B. Class B has two subclasses, B1 and B2, see 4.3 where the designer has to decide which subclass shall be applied. 4.2 Design class A NOTE A Class A falsework is one which follows established good practice which may be deemed to satisfy the design requirements. Class A covers falsework for simple constructions such as in situ slabs and beams. Class A shall only be adopted where: a) slabs have a cross-sectional area not exceeding 0,3 m2 per metre width of slab; b) beams have a cross-sectional area not exceeding 0,5 m2; c) the clear span of beams and slabs does not exceed 6,0 m; d) the height to the underside of the permanent structure does not exceed 3,5 m. The design for class A falsework shall be in accordance with the descriptive requirements in Clauses 5 and 7. 4.3 Design class B Class B falsework is one for which a complete structural design is undertaken. Class B falsework is required to be designed in accordance with the relevant Eurocodes. There are separate additional provisions in this code for Classes B1 and B2 that are detailed below. Class B2 uses a simpler design method than Class B1 to achieve the same level of safety. 4.3.1 Class B1 The design shall be in accordance with the relevant Eurocodes (EN 1990, EN 1991 to EN 1999) and additionally with 9.1.1, 9.1.2.1, 9.1.3, 9.3.3 and 9.4.1 of the present standard. NOTE
It is assumed that the erection will be carried out to the level of workmanship appropriate for permanent construction, see EN 1090-2 and EN 1090-3 for metal structures. 4.3.2 Class B2 The design shall be in accordance with Clauses 5, 6, 7, 8 and 9, with the exception of 9.1.2.1, 9.3.3, 9.4.1, and with the relevant Eurocodes (EN 1991, EN 1990 to EN 1999). Where there is a conflict, the provisions of the present standard shall take precedence. NOTE Attention is drawn to the simplified methods given in 9.3 and 9.4 and to the requirements for drawings and other documentation given in 9.1.2. SIST EN 12812:2008

Where the relevant properties of materials and equipment cannot be obtained from the standards referred to in 5.2.1, their properties shall be established by testing (see 9.5.2).
5.2.3 Steel of deoxidation type FU (Rimming steel) shall not be used. 5.3 Weldability The steel used shall be weldable, unless structural members and components are not intended to be welded. Welding shall be carried out in accordance with the requirements of EN 1090-2 and EN 1090-3. The design shall not require any welding of aluminium to be undertaken on site. 6 Brief The design shall be based on a brief containing all necessary data including information on erection, use, dismantling and loading. NOTE 1
Concrete is a typical example of loading. NOTE 2 Adequate information about site conditions should be obtained and included in the brief. Particular points are:  layout with levels, including adjacent structures;  general appreciation of the parameters relating to wind load calculations for the local conditions;  positions of services such as water pipes or electricity cables;  requirements for access and safe working space;  information about the ground conditions. 7 Design requirements 7.1 General The structure shall be designed such that all the loads acting on it are carried into the subsoil or into a load-bearing sub-structure. The available skill in erection and the ambient circumstances should be taken into account in the design. SIST EN 12812:2008

The value of the settlement, δs, shall be the lesser of 5 mm and that calculated from Equation (1); the maximum value of the thermal movement shall be calculated from Equation (2) taking the lesser of the two values of δs from the previous examination. l/××=−3s105,2≤ 5 mm (1) SIST EN 12812:2008

(2) where Rd is the normal design value of the load bearing capacity; Rd* is the design value of the load bearing capacity after differential settlement or thermal movement has occurred; h is the overall height of the tower in millimetres; l is the horizontal base of the support tower in millimetres;
δs is the differential settlement; δt is the horizontal movement caused by temperature.
a) Theoretical system b) Differential settlement c) Thermal movement NOTE See 7.4 for symbol definitions. Figure 1 — Relative deformations due to differential settlement or thermal movement 7.5 Foundation 7.5.1 Basic requirements for foundations The structure shall be supported directly from one or more of the following:  a sub-structure provided for the purpose; SIST EN 12812:2008

for the support construction for load bearing towers; – for the height adjustment of the base-construction in combination with the foundation.
In each case, stacked members shall be placed crosswise, and the base area shall be enlarged with every layer from top to bottom. The support construction for load bearing towers shall cover the whole cross-section of the tower (Figure 2a). SIST EN 12812:2008

h ≤ 40cm (3) For bandhFFVH,,see Figure 2.b).
a) support of a load bearing tower by stacked members
Key 1 lower edge of base plate
b) stacked member for height adjustment
Figure 2 — Examples of arrangement of stacked members 7.6 Towers providing support
The cross-sectional shape of a support tower shall be maintained e.g. by bracing or stiffened planes; at the top and bottom, the formwork and the foundation may substitute for the bracing if appropriately connected. SIST EN 12812:2008

a) Cross section during concreting
b) Loading diagram Key 1 access areas: minimum live loading class 1 of EN 12811-1 2 loading from the weight of concrete to be supported 3 surcharge allowance for heaping during placing concrete Figure 3 — Loading from concrete on falsework 8.2.3.2 Concrete pressure Lateral concrete pressure shall be considered in the design. NOTE The National Annex may give information on lateral loads. Published guidance can be found in:  DIN 18218:1980;  CIRIA Report No. 108, Concrete pressure on formwork, 1985;  Manual de Technologie: Coffrage; CIB-FIB-CEB 27-98-83. 8.2.4 Wind "Q5" 8.2.4.1 Maximum wind Data shall be obtained from EN 1991-1-4, which gives velocity pressure for a 50-year return period. NOTE The velocity pressure may be modified according to EN 1991-1-4 taking the period of use of the falsework into account. 8.2.4.2 Working wind For the working wind, a velocity pressure of 200 N/ m2 shall be used. 8.2.5 Flowing water actions "Q6" 8.2.5.1 Loads produced by flowing water The static pressure taken to represent the dynamic pressure of flowing water, qw in Newtons per square metre, shall be calculated from Equation (4):
qw = 500 x vw2 (4) SIST EN 12812:2008

Fw = qw × η × A (5) where A is the effective area normal to the flow, in square metres; η is the force coefficient for water appropriate to the members under consideration. The effective water area A should be determined after investigating the maximum flood level. NOTE 1 The following are some values of η:  1,86 for flat surfaces normal to flows;  0,63 for cylindrical surfaces;  0,03 for well streamlined surfaces. NOTE 2 Shielding may be taken into account providing the structure is so arranged that a clear-cut water pattern is developed at the upstream members to provide protection to regular lines of members in the direction of flow. Where such arrangements are made as a feature of the design, the total force calculated may be reduced, in the case of the shielded members, by up to 20 %. 8.2.5.2 Debris effect The accumulation of debris is expected to produce a load on the structure that may be calculated as for that on a rectangular cofferdam. This load, Fw, in Newtons, shall be calculated from Equation (6): Fw = 666 × A
× vw2 (6) where A is the area of obstruction presented by the trapped debris and falsework, in square metres; vw is the speed of water flow, in metres per second. NOTE 1 If there is a possibility of logs or rubbish being washed or floating down after heavy rain, then an estimate of the possible loads should be made. It is normally preferable to prevent debris accumulating against the structure. NOTE 2 Where a structure is subject to waves, account should be taken of the loads that may be imposed by the waves. 8.2.6 Seismic effects "Q7" Allowance should be made for seismic effects. Reference shall be made to EN 1998. NOTE Attention is drawn to the provisions of national regulations concerning seismic effects. SIST EN 12812:2008

EN 128
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표준 EN 12812:2008은 가설구조물(플라스워크)의 성능 요구사항과 일반 설계 방법을 규정하고 있습니다. 이 표준의 적용 범위는 가설구조물의 두 가지 설계 클래스에 대한 한계 상태 설계 방법과 성능 요구 사항을 명확히 설정합니다. 주요 강점으로는, 이 표준이 안전한 가설구조물 구조물을 생산하기 위한 필수 기준을 제공한다는 점이 있습니다. 또한, 가설구조물이 "영구 구조물"을 지지해야 할 때 필요한 정보와 가설구조물의 설계 또는 공급을 의뢰해야 하는 경우에 대한 명확한 지침을 포함하고 있습니다. 이러한 정보는 엔지니어링 및 건설 분야에서 매우 중요한 요소로, 실제 작업 시 안전성과 효율성을 보장하는 데 기여합니다. EN 12812:2008은 기초에 대한 정보도 제공하며, 이는 안정적이고 신뢰할 수 있는 가설구조물의 설계에 필수적입니다. 이 표준은 또한 폼워크에 대한 요구 사항을 명시하지는 않지만, 폼워크가 가설구조물 건설의 일부가 될 수 있다는 점을 반영하고 있어, 사용자의 이해를 돕는 역할을 하고 있습니다. 다만, 이 표준은 작업 발판이나 출입에 관한 정보는 제공하지 않으며, 이는 EN 12811-1에서 다루어집니다. 또한, 현장 활동이나 EN 13377에 따라 규정된 목재 폼워크 빔 및 EN 1065에 적합한 지지대와 같은 특정 표준화된 제품에 대한 정보도 포함되어 있지 않습니다. 결론적으로, EN 12812:2008 표준은 가설구조물의 안전하고 효율적인 설계에 중요한 기초 자료를 제공하며, 관련 분야의 전문가들이 이 표준을 참조하여 실무를 수행하는 데 기여할 수 있습니다.

Die Norm EN 12812:2008 legt spezifische Leistungsanforderungen und Entwurfsmethoden für zwei Entwurfsklassen von Gerüsten fest, die in der Branche als „falsework“ bekannt sind. Ihr Umfang ist klar definiert und konzentriert sich darauf, sicherzustellen, dass eine sichere falsework-Struktur produziert werden kann. Die Norm ist von großer Relevanz für Bauprojekte, bei denen temporäre Unterstützung erforderlich ist, um permanente Strukturen zu stützen. Ein herausragendes Merkmal der EN 12812:2008 ist die klare Definition der Regeln, die für das Design und die Ausführung von falsework berücksichtigt werden müssen. Diese Norm hebt die Bedeutung der richtigen Berechnung und Planung hervor, um die Sicherheit und Leistungsfähigkeit der Gerüstkonstruktion zu gewährleisten. Die Norm stellt sicher, dass sowohl die Konstruktionsmaterialien als auch die Entwurfsmethoden den erforderlichen Sicherheitsstandards entsprechen. Darüber hinaus bietet die Norm wertvolle Informationen zu den Anforderungen an die Fundamente, die für die Stabilität der falsework-Strukturen entscheidend sind. Die Einhaltung dieser Vorgaben ist ergebnisrelevant, um potenzielle Risiken während der Bauarbeiten zu minimieren. Es wird jedoch darauf hingewiesen, dass die Norm keine Anforderungen für Schalungen spezifiziert, obgleich Schalungen Teil der Gerüstkonstruktion sein können. Eine weitere Stärke der EN 12812:2008 liegt in der klaren Abgrenzung des Geltungsbereichs. Während die Norm eine solide Grundlage für die Planung und den sicheren Einsatz von falsework bietet, werden andere Themen wie Zugang und Arbeitsgerüste oder spezifische örtliche Aktivitäten nicht behandelt. Diese Klarheit trägt dazu bei, Missverständnisse zu vermeiden und die Anwendung der Norm effizient zu gestalten. Insgesamt bietet die EN 12812:2008 eine umfassende, praxisnahe Orientierung für Fachleute im Bauwesen, die sich mit der Planung und dem Einsatz von falsework beschäftigen. Durch ihre klaren Vorgaben fördert sie die Sicherheit und Effizienz von Bauprojekten, was sie zu einem unverzichtbaren Instrument in der Branche macht.

La norme EN 12812:2008, intitulée "Falsework - Performance requirements and general design", établit des exigences de performance et des méthodes de conception des états limites pour deux classes de conception de falsework. Ce document normatif joue un rôle crucial dans la création de structures de falsework sûres, en définissant les règles essentielles à respecter lors de leur conception et de leur mise en œuvre. L'un des points forts de cette norme est son approche systématique des exigences de performance, qui garantit que les structures de falsework sont conçues pour supporter efficacement les charges auxquelles elles seront soumises. En spécifiant des méthodes de conception, la norme facilite le processus d'élaboration des structures temporaires tout en assurant la sécurité des sites de construction. La norme est particulièrement pertinente pour les projets où le falsework est nécessaire pour soutenir une "structure permanente". Elle offre également des conseils sur la conception et la fourniture de falsework, ce qui est essentiel pour les ingénieurs et les entreprises de construction. Par ailleurs, les recommandations concernant les fondations renforcent la compréhension des conditions nécessaires pour une mise en œuvre sécurisée du falsework. Il est important de noter que la norme ne couvre pas les exigences liées au coffrage, bien que le coffrage puisse faire partie intégrante de la construction du falsework. De même, elle n'aborde pas les échafaudages d'accès et de travail, ces derniers étant traités dans la norme EN 12811-1. En outre, la norme ne fournit pas d'informations sur des activités spécifiques sur le chantier ni sur l'utilisation de produits standardisés tels que les poutres de coffrage en bois conformes à EN 13377 et les étais conformes à EN 1065. Dans l'ensemble, la norme SIST EN 12812:2008 est un document précieux pour les professionnels de la construction, car elle définit clairement les exigences de performance et les considérations de conception nécessaires pour garantir la sécurité et la fonctionnalité des structures de falsework. Sa pertinence dans le domaine de la construction ne peut être sous-estimée, car elle contribue à établir des normes de sécurité élevées dans les projets de construction à travers l'Europe.

EN 12812:2008は、仮設構造物に関する性能要件と一般設計について規定するヨーロッパの標準です。この標準は、仮設構造物の2つの設計クラスに対する性能要件と限界状態設計法を明記しています。仮設構造物を安全に構築するためのルールが設定されていることから、その重要性が際立っています。 標準の範囲は、仮設構造物が「恒久構造物」を支える必要がある場合や、仮設構造物の設計または供給を委託する必要がある場合に提供される情報を含んでいます。この点において、EN 12812:2008は実務におけるガイドラインとして非常に有用です。さらに、基礎に関する情報も提供されているため、設計者や施工業者にとって、基礎設計を考慮する際に役立ちます。 しかしながら、この標準は型枠に関する要件を明記していない点に注意が必要です。型枠は仮設構造物の一部を構成することがありますが、その詳細が含まれていないため、施工者は別途リソースを参照する必要があります。また、アクセスや作業足場に関する情報はEN 12811-1に委ねられており、仮設構造物設計に特化した内容になっています。さらに、現場活動や特定の標準製品の使用についても情報がないため、これらの要素も考慮することが求められます。 総じて、EN 12812:2008は仮設構造物の設計において非常に重要な指針を提供しており、その適用範囲や安全性に関する要求が明確に示されています。この標準は、関連する構造物の設計施工における信頼性を高めるための基盤となるものであり、仮設構造物の建設に従事するすべての関係者にとって必須の文書です。

The EN 12812:2008 standard establishes essential performance requirements and limit state design methods specifically for falsework, delineating two distinct design classes. This European Standard is critical in ensuring that falsework structures are produced with safety as a priority, making it an invaluable resource for engineers and designers involved in construction projects. One of the primary strengths of EN 12812:2008 is its comprehensive scope, which not only addresses the performance requirements but also highlights the necessary design considerations for falsework supporting permanent structures. This inclusion is particularly relevant for construction practitioners who frequently encounter situations where reliable temporary support is crucial for ongoing construction activities. Furthermore, the standard provides detailed guidance on foundational considerations, which is a vital aspect when establishing the integrity of falsework designs. By offering these insights, EN 12812:2008 aids in reducing the potential for structural failures that can arise from inadequate foundation support. However, it is essential to note that this standard does not cover formwork requirements, access and working scaffolds, or site activities, thus necessitating the use of additional standards for a comprehensive approach to construction safety and design. Formwork, while potentially part of the falsework configuration, is addressed separately, indicating the need for practitioners to consult the appropriate documents, such as EN 12811-1 for related scaffolding guidelines and EN 13377 and EN 1065 for standardized product utilization. In summary, EN 12812:2008 serves as a foundational instrument in the safe design and implementation of falsework systems within construction settings, reflecting its relevance in the industry and its necessity for enhancing safety practices.