EN 1365-3:1999

Fire resistance tests for loadbearing elements - Part 3: Beams

This part of EN 1365 specifies a method for determining the fire resistance of beams with or without applied fire protection systems and with or without cavities.  This standard is used in conjunction with prEN 1363-1. Beams which are part of a floor construction are tested with the floor construction as described in prEN 1365-2 and are subject to evaluation of integrity and insulation. General guidance on this method of test is given in annex A.

Feuerwiderstandsprüfungen für tragende Bauteile - Teil 3: Balken

Dieser Teil von EN 1365 legt ein Verfahren für die Ermittlung der Feuerwiderstandsdauer von Balken fest, wenn diese mit oder ohne Anwendung eines Brandschutzsystems sowie mit oder ohne Hohlräume(n) zu prüfen sind. Diese Norm gilt in Verbindung mit prEN 1363-1. Balken als Bestandteil einer Deckenkonstruktion werden wie in prEN 1365-2 beschrieben mit der Deckenkonstruktion geprüft und einer Beurteilung des Raumabschlusses und der Wärmedämmung unterzogen. Ein allgemeine Anleitung zu diesem Verfahren ist in Anhang A angegeben.

Essais de résistance au feu des éléments porteurs - Partie 3: Poutres

La présente partie de l'EN 1365 prescrit une méthode de détermination de la résistance au feu des poutres avec ou sans application de systèmes de protection incendie et avec ou sans cavités. La présente norme est utilisée avec le prEN 1363-1. Les poutres faisant partie d'un plancher sont soumis à l'essai avec celui-ci comme décrit dans le prEN 1365-2 et font l'objet d'une évaluation de leur étanchéité au feu et de leur isolation thermique. Des lignes directives générales sur cette méthode sont données dans l'annexe A.

Preskusi požarne odpornosti nosilnih elementov - 3. del: Nosilci

General Information

• Status: Published
• Publication Date: 07-Dec-1999
• Withdrawal Date: 29-Jun-2001
• ICS: 13.220.50 - Fire-resistance of building materials and elements
• Technical Committee: CEN/TC 127 - Fire safety in buildings
• Drafting Committee: CEN/TC 127 - Fire safety in buildings
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 18-Jul-2024
• Completion Date: 14-Apr-2025
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Mandate: M/100 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on precast concrete products
• Ref Project: SIST EN 1365-3:2001 - Fire resistance tests for loadbearing elements - Part 3: Beams

Overview

EN 1365-3:1999 - "Fire resistance tests for loadbearing elements - Part 3: Beams" (CEN) specifies a standardized method to determine the fire resistance of beams. The standard covers beams tested with or without applied fire protection systems and with or without cavities. It is intended to be used together with prEN 1363-1 (general fire resistance test methods). Where beams form part of a floor construction, testing is carried out in conjunction with prEN 1365-2 and includes assessment of integrity and insulation. General guidance on the test method is provided in Annex A.

Key Topics

• Scope of testing: Methods for testing beams as loadbearing elements under prescribed fire conditions (with/without protection and cavities).
• Combined testing: Requirements when beams are part of a floor - coordinated testing and evaluation with prEN 1365-2.
• Evaluation criteria: Assessment of loadbearing capacity and, when applicable, integrity and insulation performance.
• Use with prEN 1363-1: The standard relies on general test procedures and furnace conditions defined in the overarching fire test standard.
• Guidance annex: Annex A offers interpretative and practical guidance for conducting the beam fire resistance test.

Applications

EN 1365-3 is used to produce reliable, comparable data on beam performance in fire and to support decisions in design, compliance, and product development:

• Structural engineers - to verify that beam designs meet required fire resistance for safety and code compliance.
• Fire test laboratories - to perform standardized fire resistance tests on beams and assemblies.
• Manufacturers of beams and fire protection systems - to validate and certify products (intumescent coatings, encasements, fireproofing boards).
• Regulatory authorities and certifiers - to assess conformity with national building regulations and European standards.
• Architects and contractors - to select appropriate beam types and protection strategies for building projects.

Related Standards

• prEN 1363-1 - General requirements and procedures for fire resistance tests (used alongside EN 1365-3).
• prEN 1365-2 - Fire resistance tests for floors - relevant when beams are tested as part of floor constructions.
• Other parts of the EN 1365 series and regional/adopted variants (e.g., SIST EN 1365-3) may apply for specific jurisdictions.

EN 1365-3 is a key reference for anyone involved in assessing the fire-resistance of building elements, ensuring consistent testing and reporting of beam performance under fire conditions.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Preskusi požarne odpornosti nosilnih elementov - 3. del: NosilciFeuerwiderstandsprüfungen für tragende Bauteile - Teil 3: BalkenEssais de résistance au feu des éléments porteurs - Partie 3: PoutresFire resistance tests for loadbearing elements - Part 3: Beams91.060.99Drugi stavbni elementiOther elements of buildings13.220.50Požarna odpornost gradbenih materialov in elementovFire-resistance of
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