Frequently Asked Questions
Hydraulic demand is the amount of water (flow + pressure) the system needs to operate effectively. It’s calculated during design to ensure the water supply can meet demand at the worst-case (most remote) head. An insufficient water supply can compromise system performance and fail inspections.
While the initial cost varies, sprinklers are cost-effective in the long run. According to NFPA, average installation cost in new construction is $1–$2 per square foot. Retrofits cost more. Insurance discounts, reduced fire loss, and enhanced life safety often offset the investment quickly.
No. Only the sprinkler head(s) exposed to enough heat will activate. This targeted activation minimizes water damage while controlling the fire quickly. Unlike Hollywood portrayals, full-system discharge only occurs in deluge systems, which are used in high-hazard areas.
Under NFPA 25, sprinkler systems require:
- Monthly: Visual inspections of valves and gauges
- Quarterly: Alarm device and water flow testing
- Annually: Full inspection and main drain test
- Every 5 Years: Internal pipe inspection
- Every 10 Years: Sprinkler head sample testing (dry systems)
Absolutely. Systems are custom-designed based on building use, layout, hazards, ceiling heights, and occupancy loads. For example, a warehouse with high-piled storage requires a different design than a residential apartment. Design engineers use code requirements, hydraulic models, and site conditions to tailor the system effectively.