Package of PROTECTION

摘要

Passive fire protection (PFP) has long played an important role in achieving the fire performance of structural steelwork in buildings. It is used in low-, medium- and high-rise buildings of various occupancy types to achieve fire-resistance ratings for prescriptive design. In the future, however, it is hoped that a risk-based approach to fire resistance design, coupled with robust structural fire design, will become more acceptable. For example, where the risk of a severe fire and structural collapse is shown to be very small, the need for passive PFP could be reduced. But should the risk of a fire be high, more fire protection and structural detailing will be required for the building design. This concept is something that forms the basis of BS EN 1991: 2002: Eurocode 1: Actions on structures: Part 1-2: General actions — Actions on structures exposed to fire, although it is expected to be revised for the UK market, due to concerns with the risk factors proposed. The major next step required is therefore a study and quantification of suitable risk factors for structural fire design.