4.4.1. A standpipe and hose system shall be installed in the following buildings:(a) buildings of more than 3 storeys or more than 14 m above ground level;
(b) buildings of more than 3 storeys without automatic extinguishers and having an area of more than 1,000 m2;
(c) buildings of 2 storeys without automatic fire extinguishers and having an area of more than 2,000 m2 if the hazards are low, of more than 1,500 m2 if the hazards are medium, and of more than 1,000 m2 if the hazards are high;
(d) buildings of one storey without automatic extinguishers and having more than 3,000 m2 if the hazards are low, more than 2,000 m2 if the fire hazards are medium, and of more than 1,000 m2 if the hazards are high.