Fire Protection System Calculator

System Mode (-)

Select fire protection system type to design

Design Standard (-)

Applicable standard for fire cabinet/hydrant system

System Type (-)

Fire cabinet system installation type

Hose Length (m)

Standard fire hose length

Hose Diameter (mm)

Inner diameter of fire hose

Nozzle Type (-)

Nozzle type affects K-factor and pattern

Building Height (m)

Total building height from ground to top floor

Riser Height (m)

Vertical riser height from pump to highest outlet

Simultaneous Hoses (-)

Number of hoses operating simultaneously

Sprinkler Standard (-)

Applicable standard for sprinkler system design

Building Type (-)

Building usage type for hazard classification

Floor Area (m²)

Single floor area for sprinkler coverage calculation

Floor Height (m)

Typical floor-to-floor height

Number of Floors (-)

Total number of floors with sprinkler protection

Sprinkler Type (-)

Sprinkler head type and orientation

Sprinkler K-Factor (-)

Discharge coefficient based on orifice size

Pipe Material (-)

Sprinkler pipe material for friction calculation

🔥

Fire Protection System Calculator

Complete fire protection system design calculator. FIRE CABINET & HYDRANT MODE: • NFPA 14, EN 671-1/2, TS 9251/12183 compliance • Hose friction loss and riser sizing • Pump pressure requirement • Manifold/header sizing AUTOMATIC SPRINKLER MODE: • NFPA 13, EN 12845, TS 9252 compliance • Sprinkler count and placement • Pipe sizing (main and branch) • Hydraulic calculations • Tank volume (NFPA 22 / EN 12845) • Pump selection PUMP SELECTION: • Electric centrifugal (standard) • Multi-stage (high pressure) • Diesel-driven (emergency backup) STANDARDS SUPPORTED: • NFPA 13, 14, 20, 22 • EN 12845, 671-1/2 • TS 9251, 9252, 9253, 12183 DESIGN DENSITIES: Light Hazard: 2.25-4.1 mm/min Ordinary Hazard: 5.0-6.1 mm/min Extra Hazard: 10.0-24.4 mm/min COVERAGE AREAS: Light: 12-20 m² per sprinkler Ordinary: 9-12 m² per sprinkler Extra: 6-9 m² per sprinkler

Key Points:

Dual mode: Fire Cabinet or Sprinkler system
Multi-standard compliance (NFPA, EN, TS)
Automatic sprinkler count calculation
Pipe sizing with hydraulic analysis
Pump selection with safety margins
Tank volume per standard requirements
Standard comparison table
Compliance status indicator
Fire protection design report
Material list generation

Calculation Steps:

Enter all required parameters
Click "Update Calculation"
Review results and analysis

Formula Variables:

Q Flow Rate (L/min)

P Pressure (bar)

K K-Factor (L/min·bar^0.5)

D Density (mm/min)

A Coverage Area (m²)

n Sprinkler Count (-)

Dpipe Pipe Diameter (mm)

V Velocity (m/s)

ΔP Pressure Loss (bar)

Vtank Tank Volume (m³)