Provides guidance on the design, installation, testing and maintenance in new and existing buildings of systems intended to limit the spread of smoke by means of pressure differentials.Cross References: BS 476-24:1987*BS 5306-2:1990*BS 5588-5:1991*BS 5588-7:1997*BS 5588-8:1988*BS 5588-9:1989*BS 5588-12*BS 5655-1:1986*BS 5720:1979*BS 5839-1:1988*BS 6207*BS 6387:1994*BS 7346-1:1990*BS 7346-2:1990*BS 7671:2001*BS 8300:2001*BS 8313:1997*Building Regulations 1991*Building (Procedure) (Scotland) Regulations 1981*Building (Procedure) (Scotland) Amendment Regulations 1990*Building Regulations 1994*Electrical Equipment (Safety) Regulations 1994*Building Standards (Scotland) Regulations 1990*Electricity at Work Regulations 1989*Building Regulations 1991. Approved Document B 1992*