PD ISO/TR 24679-6:2017

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Design strategy for fire safety of structure
5 Qualification of the performance of structures in fire
Annex A (informative) - Heat transfer of calculation
Annex B (informative) - Results from thermal and
        mechanical analyses
Annex C (informative) - Results from OAT sensitivity
        analysis for the uncertainty of material properties
Bibliography

Gives an example of fire safety engineering design in the application of ISO 24679-1 to an office building.

This document provides an example of fire safety engineering design in the application of ISO24679‑1 to an office building.

In this document, an overall structural analysis of a building is undertaken. It consists in a numerical assessment of the structural performance of an eight-storey concrete building when subjected to a fire. This analysis is performed in order to demonstrate that the fire safety objectives, for the relevant design fire scenarios, due to structural behaviour of building in the event of fire, are met with the trial plan for the safety of structure. With regards to this, a fully developed fire was studied.

The purpose of this document is to assess the performance of an office building which is fully accessible to public in case of fire, using ISO24679‑1. In this respect, a critical design fire was identified and analysed using detailed fire modelling. A more detailed analysis was then performed for critical design fire using the finite element model. The advanced model provided all the comprehensive information necessary for analysing the given built environment with respect to fire safety.

It is to be noted that this document only addresses the fire safety objectives related to the structural performance during fire. The analysis within this document is therefore only part of the overall building fire safety strategy.