Firefighting Systems — Hydrants, Sprinklers and Pump Rooms

Firefighting systems are the hydrants, hose reels, wet risers, automatic sprinklers and fire pump rooms that suppress a fire in a building. Pumps, tank and pipework are sized by hydraulic calculation from the occupancy's hazard classification and the systems installed, with reference to NBC 2016 Part 4, IS 15105 and IS 3844.

By Dhruv Agarwal · · 2 min read

What we deliver

Fire hydrant and hose reel systems, wet risers, automatic sprinklers, fire pump rooms and the associated piping — installed, pressure tested and commissioned.

This is life-safety work, and the standard it is held to is correspondingly higher. A sprinkler system is tested once properly and then, with luck, never used — which means whatever was wrong with it on day one is discovered on the worst day of the building's life.

Scope of works

StageWhat we deliver
AssessmentOccupancy, hazard class and applicable requirements
DesignLayout, hydraulic calculation, pump and tank sizing
Pump roomMain, jockey and diesel pumps, valves, controls
HydrantsInternal and yard hydrants, hose reels, wet risers
SprinklersHeads, range pipes, installation control valves
PipingMS / GI piping, supports, painting and identification
TestingHydrostatic pressure test, flow test, commissioning
HandoverAs-built drawings, test records, O&M documentation

What drives the cost

Hazard classification · building height and floor area · whether sprinklers are required in addition to hydrants · pump capacity and the diesel standby · tank volume · pipe material and lengths · the number of enclosures on a fit-out, since each needs its own coverage.

Where projects go wrong

  • Pump room space allocated before the calculation. The pumps and valves then do not fit, and the room is rebuilt.
  • Sprinklers not reassessed after partitioning. Every enclosure needs its own coverage.
  • Pressure testing rushed or skipped. The test is the only proof the system holds pressure; leaks found later are found in finished ceilings.
  • Obstructions ignored. Ducts, beams and cable trays that block a sprinkler's spray pattern leave areas uncovered despite heads being present.
  • No maintenance plan. Jockey pumps, valves and diesel engines need routine testing to still work when called on.

Why Hagerstone

A dedicated 35-member firefighting team — the largest single trade team in our organisation — plus 15 plumbers, 15 fitters and 15 welders, with pipe threading, cutting, bending and pressure testing equipment owned in-house.

Coordinated with interiors and MEP under one contract, so sprinkler rework on a fit-out is resolved on the drawing rather than discovered on site.

79+ quality checkpoints under ISO 9001 / 14001 / 45001.

Standards referenced

Fire and life safety requirements under NBC 2016, Part 4. Sprinkler design and installation to IS 15105. Internal hydrants and hose reels to IS 3844.

Standards referenced

  • NBC 2016, Part 4 — Fire and life safety (Bureau of Indian Standards)
  • IS 15105 — Design and installation of fixed automatic sprinkler systems (Bureau of Indian Standards)
  • IS 3844 — Installation of internal fire hydrants and hose reels (Bureau of Indian Standards)

Frequently asked

Not every one — the requirement depends on occupancy, height and floor area under NBC 2016 Part 4 and the local fire authority's interpretation of it. Most multi-storey commercial buildings and larger industrial buildings do. The requirement should be established for the specific building at design stage, not assumed from a similar project.

The hazard classification of the occupancy, the systems installed — hydrant, sprinkler or both — and the duration the code requires them to run. Those set the required flow and pressure, which in turn size the main pump, the jockey pump and the diesel standby, and the stored water volume. It is a calculation, and it has to be done before the pump room is given its space in the building.

Because the base-build sprinkler layout assumes open plan. Each new cabin or meeting room is an enclosure that needs its own coverage, and a head that sat in the middle of an open area may now be on the wrong side of a wall. Every partition drawn on a fit-out has a sprinkler consequence behind it.

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