Based on NFPA 72 guidelines used by fire protection engineers.

NFPA Clause Reference

According to NFPA 72:

• Smoke detector spacing typically 30 ft (9.1 m)
• Maximum coverage ≈ 900 sq ft (≈83 m²) per detector
• Ceiling height impacts spacing adjustments

Relevant section:

NFPA 72 – Chapter 17 (Initiating Devices)
Smoke Detector Spacing Requirements

Fire Alarm Detector Calculator (Indian Standard – 7 m Spacing)

In many Indian projects following National Building Code of India, engineers adopt a more conservative spacing (~7 m) to ensure better coverage and safety.

So your calculator should support:

• Detector spacing: 7 m
• Coverage area ≈ 49 m² (7 × 7)

This makes the tool more accurate for Indian projects.

Fire Pump calculation– Fire Fighting Pump Capacity Calculation (NFPA & NBC 2016)

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