Fire Door Rating Selector
Pick the location/element and occupancy — get an indicative fire rating (30/60/90/120 min), whether smoke control (Sa) is needed, and the full assembly. Per NBC 2016 Part 4 / IS 3614 — indicative only; confirm with a fire consultant and your local fire NOC.
The opening
Separates a dwelling from the common corridor — must hold the fire inside the unit and keep smoke out of the escape route. The rating is a property of the tested assembly (leaf + frame + seals + closer), not the leaf alone. Indicative India 2026 — NBC 2016 Part 4 & IS 3614; your fire consultant and local fire NOC are final.
Indicative fire-resistance rating
0 min
Rating
60 min
Smoke (Sa)
Yes
cold-smoke seals
Element
Flat
protected
Why this rating
- Flat / unit entrance door: indicative base 60 min — Separates a dwelling from the common corridor — must hold the fire inside the unit and keep smoke out of the escape route.
- High-rise (> 15 m): tighter compartmentation applies; confirm with the fire consultant.
Required assembly for a 60-minute door with Sa
A fire door is only as good as its weakest part — every component below must come from the same tested certification.
- Leaf: solid flush fire-rated core (mineral/particle/flaxboard or steel), 44–46 mm typical.
- Frame: pressed-steel or fire-rated timber chowkat, properly grouted/anchored to the wall.
- Intumescent seal: continuous strip in the leaf/frame rebate (expands to seal the gap in fire).
- Smoke (cold-smoke) seals — brush/fin seals on all edges for the Sa smoke-control classification.
- Self-closing device (overhead door closer); double doors need a coordinator/selector.
- Fire-rated hardware: CE/IS hinges (3+ for heavy leaves), fire-rated lock/latch, intumescent pads behind ironmongery.
- Permanent rating label/plug on the leaf; install strictly to the manufacturer's tested certification.
Indicative rating by element
For your selected occupancy and flags, this is the indicative rating each location/element would need. Your selected element is highlighted.
Indicative only. Fire-door ratings are a legal life-safety requirement set by the tested assembly, NBC 2016 Part 4, IS 3614, your state fire-safety rules and the Authority Having Jurisdiction. This selector gives a starting point — always confirm the final rating, smoke classification and assembly with a qualified fire consultant and obtain your local fire NOC before procurement.
Sense-check your fire-door schedule
DesignAI maps ratings, smoke control and assemblies across every opening in your building and flags what the fire consultant should confirm for the NOC.
Related Guides — Deep-dive reading
Fire Door Ratings India: 30 to 180 Min Codes (India 2026)
A specifier's deep-dive into 30/60/90/120/180-minute fire-door ratings, integrity vs insulation, IS 3614 testing, and where NBC 2016 demands each.
Home Doors & EntrancesFire Rated Doors in India: IS 3614 Ratings, Cost & Where They're Required (2026)
What a fire-check door is, how the 30/60/90/120-minute ratings work to IS 3614, where the NBC makes them mandatory, and why the whole assembly must be certified.
Home Doors & EntrancesFire Exit Doors in India: NBC 2016 Egress, Panic Bars & Costs (2026)
How fire exit and emergency egress doors must be sized, swung, hardware-fitted and signed to NBC 2016 Part 4 in Indian buildings, and what they cost.
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