PD 7974-3:2019

This standard PD 7974-3:2019 Application of fire safety engineering principles to the design of buildings is classified in these ICS categories:

• 91.040.01 Buildings in general
• 13.220.20 Fire protection

This Published Document 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. This Published Document considers the following issues:

1. the conditions that lead to fire spread beyond the enclosure of fire origin (see also Annex A);

2. the selection of design fires depending on the objectives of the assessment (see also Annex B);

3. the thermal and mechanical response of the enclosure boundaries and its structure to the fire conditions (see also Annex C and Annex D);

4. the impact of the anticipated thermal and mechanical responses on adjacent enclosures and spaces; and

5. 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 (see also Annex E and Annex F).

Annex G provides a methodology for establishing the extended application of fire resistance test results.