Category of systems
(Residential)
- Category 1 (Typically a domestic dwelling (house) for a single family)
- Category 2 (Typically a block of flats below 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)
