Buildings in India are classified into 5 statutory risk categories. The risk class determines mandatory firefighting installations, structural testing frequencies, and penalty tiers.
Class A: High-Rise Residential Buildings (> 15 Meters)
Annual NOC AuditApartment towers, housing societies, gated residential complexes with height exceeding 15 meters.
- Mandatory dual fire staircases (min width 1.5m) with positive pressure air fans.
- Dedicated fire refuge floor every 7 stories with emergency telephone line.
- Rooftop helipad / drone landing clearance for towers exceeding 100 meters.
Class B: Commercial, Shopping Malls & IT Parks
High OccupancyMultiplex cinemas, shopping centers, central business offices, food courts, and convention centers.
- 100% automated fire sprinkler coverage across all shop floors and basement parking.
- Illuminated photo-luminescent exit floor markers and public address audio evacuation.
Class C: Hospitals, Nursing Homes & Critical Care
Bi-Annual Mandatory AuditInstitutional healthcare facilities with non-ambulatory patients requiring assisted bed evacuation.
- External fire evacuation ramps (minimum 2.4m slope width) directly accessible from ICU floors.
- Zero combustible false ceilings and mandatory non-toxic electrical wiring (LSZH).
Class E: Industrial, Chemical & Hazardous Storage
Critical RiskChemical plants, pharmaceutical manufacturing, LPG storage yards, and explosive warehouses.
- High-expansion foam deluge systems and flameproof electrical fixtures (ATEX/IECEx).
- Continuous peripheral water curtain walls and monthly mock evacuation audits.