Esta brochura é um auxiliar, contendo tabelas e um ábaco, para o cálculo do tempo de resistência ao fogo, de elementos desprovidos de protecção, de uma estrutura em aço. Está em conformidade com a parte 1.2 do EC3 e da parte 1.1 do EC1.
(ver também a publicação ECCS - 92)
The publication is a design aid to calculate the fire resistance time of unprotected and insulated steel members on the basis of ENV 1993-1-2 and ENV 1991-2.2. It contains a nomogram to calculate the critical temperatures and the corresponding time to reach this temperature for a given profile. The application of the nomogram is explained with 4 worked examples.
1. Introduction
2. Principles of Calculation
2.1 Steel temperature
2.2 Mechanical Properties of Steel at Elevated Temperatures
2.3 Temperature Distribution
2.4 General Assumptions
3. Calculation Procedure
4. Properties of Fire protection Material
5. Section Factors
5.1 Unprotected Steel Members
5.2 Steel Members insulated by Fire Protection Material
5.3 Section Factors for Hot rolled Profiles
6. Nomogram
7. Worked Examples
8. Symbols and Units
8.1 Symbols
8.2 Units
9. References
10. Rules given in the National Application Document and properties of Proprietary Fire protection Material According to National Test Results
ECCS