What is the maximum number of sprinkler heads allowed to be connected directly to a domestic water supply in an isolated area?

In various building and fire codes, the standard often dictates that when connecting sprinkler heads directly to a domestic water supply in isolated areas, limitations are placed on the number of heads to ensure adequate water pressure and flow for effective fire suppression. The value of six is significant because it reflects the balance between ensuring enough operational capability while preventing the risk of exceeding the water supply capacity.

The choice of six arises from considerations of hydraulic calculations, which demonstrate that having more than this number can lead to insufficient water supply for all the heads to function effectively during a fire emergency. If too many heads are connected, the potential exists for drastically reduced water pressure and flow, diminishing the system’s overall reliability.

This understanding is important in fire safety planning, as it reinforces the necessity of adhering to standards that prioritize effective firefighting measures.