Category of systems
(Residential)

  • Category 1 (Typically a domestic dwelling (house) for a single family)
  • Category 2 (Typically a block of flats over 18m)
  • Category 3 (Typically a residential care home)
  • Category 4 (Typically a block of flats 18m and above)

Sprinkler system

CATEGORY 1

Individual dwellings (houses), HMO’s, B&B’s, Boarding Houses

  • Calculate for 1 or 2 sprinkler heads operating
  • Average 84-100 litres/minute
  • Storage for 10 minutes supply
  • Tank size 1m³ to 1.5m³

 

CATEGORY 2

Blocks of flats below 18m, small residential care homes, sheltered and extra care housing

  • Calculate for 1 or 2 sprinkler heads operating
  • Average 84-100 litres/minute
  • Storage for 30 minutes supply
  • Tank size 3m³ to 4.5m³

 

CATEGORY 3

Large residential care homes, student accommodation, dormitories, hostels

  • Calculate for up to 2 or 4 sprinkler heads operating
  • Average 168-200 litres/minute
  • Storage for 30 minutes supply
  • Tank size 6m³ to 9m³

 

CATEGORY 4

Blocks of flats 18m and above

  • Calculate for up to 2 or 4 sprinkler heads operating
  • Average 168-200 litres/minute
  • Storage for 60 minutes supply
  • Split tank size 6m³ to 9m³ (each tank)