Fire Sprinkler Calculator
Calculate sprinkler coverage, spacing, and water demand based on hazard classification. Determine design density and system requirements.
Enter building details to design sprinkler system
DISCLAIMER
This calculator provides ESTIMATES for preliminary planning purposes. Results are based on standard assumptions and may not reflect your specific project conditions.
By using this tool, you acknowledge that:
1. All calculations are approximate and based on typical industry standards and assumptions.
About This Calculator
The Fire Sprinkler Calculator helps fire protection engineers and MEP contractors design automatic sprinkler systems for buildings across the UAE and Gulf. Calculate sprinkler coverage, spacing, and water demand based on hazard classification (Light, Ordinary, Extra Hazard). Determine design density, hydraulic calculations, and system requirements per NFPA 13 and UAE Civil Defense standards.
When to Use This Calculator
- Designing sprinkler systems for commercial buildings and warehouses
- Calculating hydraulic requirements for fire pump sizing
- Determining sprinkler spacing for different hazard classifications
- Verifying water supply adequacy for fire protection
- Preparing fire protection tender specifications and BOQs
How to Use This Calculator
Select Hazard Classification
Choose Light Hazard (offices), Ordinary Hazard (retail, parking), or Extra Hazard (warehouses, industrial).
Enter Area Details
Input floor area to be protected, ceiling height, and obstructions (beams, ducts).
Specify Sprinkler Type
Select standard spray, extended coverage, ESFR, or in-rack sprinklers based on application.
Calculate Coverage
Get maximum coverage area per sprinkler and required spacing based on hazard class.
Review System Requirements
Get total sprinkler count, design density (mm/min), and water demand (L/min) for the most remote area.
Typical Scenarios in UAE & Gulf Projects
Fire protection engineer designs sprinkler system for a 50,000m² mall. Ordinary Hazard Group 1 requires 4.1 mm/min density over 140m² design area. Calculator determines 1,500+ sprinklers at 4.0m×4.0m spacing, with 574 L/min water demand plus hose allowance, requiring a 200 HP fire pump.
Logistics facility with 12m storage height requires Extra Hazard protection. ESFR sprinklers at ceiling level eliminate in-rack sprinklers. Calculator specifies K-25 heads at 3.0m×3.0m spacing, 1,325 L/min per head design, meeting NFPA 13 and UAE Civil Defense requirements.
Frequently Asked Questions
Take Your Calculations Further
This calculator reflects the logic built into Arkan's construction management platform.
Last Updated: January 2026
Standards Reference: NFPA 13 (Standard for Installation of Sprinkler Systems), UAE Fire and Life Safety Code, BS EN 12845