Application of fire safety engineering principles to the design of buildings - Structural response and fire spread beyond the enclosure of origin

PD 7974-3:2011 Application of fire safety engineering principles to the design of buildings. Structural response and fire spread beyond the enclosure of origin

This Published Document (PD 7974-3:2011) provides a framework for developing a rational methodology for design using a fire safety engineering approach through the application of scientific and engineering principles to the protection of people, property and the environment from fire. PD 7974-3:2011 considers the following issues:

• The conditions within a fire enclosure and their potential to cause fire spread
• The thermal and mechanical response of the enclosure boundaries and its structure to the fire conditions
• The impact of the anticipated thermal and mechanical responses on adjacent enclosures and spaces
• The structural responses of loadbearing elements and their effect on structural stability, load transfer and acceptable damage according to the design and purpose of the building
• Fire following structural impact to the building.

PD 7974-3:2011 is one of a series of documents published under the Fire Standards Policy Committee, and is a supporting document to BS 7974, Code of Practice on the Application of Fire Safety Engineering Principles to the Design of Buildings.

Other documents in the series are:

• PD 7974-0: Guide to design framework and fire safety engineering procedures
• PD 7974-1: Initiation and development of fire within the enclosure of origin
• PD 7974-2: Spread of smoke and toxic gases within and beyond the enclosure of origin
• PD 7974-4: Detection of fire and activation of fire suppression systems
• PD 7974-5: Fire service intervention
• PD 7974-6: Evacuation
• PD 7974-7: Probabilistic risk assessment.

Contents for PD 7974-3:2011

• Scope
• Normative references
• Terms and definitions
• Symbols and abbreviated terms
• Interaction of BS 7974 sub-systems
• Design approach to PD 7974-3
• Analysis of mechanisms of fire spread
• Characterization of the fire enclosure and openings
• Characterization of the fire conditions
• Analysis of thermal response
• Behaviour of separating elements in fire
• Analysis of mechanical response of loadbearing structural elements and frames

Supersession

This Published Document supersedes PD 7474-3:2003, which is withdrawn.