ÖNORM EN 1992-1-2|Fire design

EN 1992-1-2 deals with the basis, requirements and rules for the design of structures for the accidental situation of fire exposure. The general objectives of fire protection are to limit risks with respect to the individual and society, neighbouring property, and where required, environment or directly exposed property, in the case of fire.

Construction Products Directive 89/106/EEC gives the following essential requirement for the limitation of fire risks: The construction works must be designed and build in such a way, that in the event of an outbreak of fire

  • the load bearing resistance of the construction can be assumed for a specified period of time; 
  • the generation and spread of fire and smoke within the works are limited; 
  • the spread of fire to neighbouring construction works is limited; 
  • the occupants can leave the works or can be rescued by other means; 
  • the safety of rescue teams is taken into consideration.

EN 1992- 1-2 describes the Principles, requirements and rules for the structural design of buildings exposed to fire and is intended to be used in conjunction with EN 1992-1-1 and EN 1991-1-2. It only identifies differences from, or supplements to, normal temperature design. This document deals only with passive methods of fire protection. Active methods are not covered. It applies to concrete structures that are required to fulfil certain functions when exposed to fire, in terms of: 

  • avoiding premature collapse of the structure (load bearing function);
  • limiting fire spread (flame, hot gases, excessive heat) beyond designated areas (separating function).

EN 1992-1-2 gives principles and application rules (see EN 1991-1-2) for designing structures for specified requirements in respect of the aforementioned functions and the levels of performance. It applies to structures, or parts of structures, that are within the scope of EN 1992-1-1 and are designed accordingly.

However, it does not cover structures with prestressing by external tendons and shell structures

The methods given in EN 1992-1-2 are applicable to normal weight concrete up to strength class C90/105 and for lightweight concrete up to strength class LC55/60. Additional and alternative rules for strength classes above C50/60 are given in section 6.

Current document

ÖNORM EN 1992-1-2
EUROCODE 2 - Design of concrete structures - Part 1-2: General rules - Structural fire design

Current status:

ÖNORM

Publication:

2010-09-01

More Information & Order:

ÖNORM EN 1992-1-2

National Annex (German only)

ÖNORM B 1992-1-2
EUROCODE 2 - Design of concrete structures - Part 1-2: General rules - Structural fire design - National specifications concerning ÖNORM EN 1992-1-2 and national comments

Current status:

ÖNORM

Publication:

2007-04-01

National Specifications:

Overview

More Information & Order:

ÖNORM B 1992-1-2