wind pressures and building stack effects, a reduction in the designed pressure differentials is not justified.
There had been some concern that the sudden evaporation of water spray may cause a hazard [Mawhinney & Tamura, 1994]. However, it is generally considered that provided the sprinkler(s) operate early, i.e. before the fire is well developed, then this is not an important issue.
© Building Research Establishment Ltd 2005