What is the fire rating requirement for fire doors in high-rise escapes?

Question

We are buying fire doors for the exit staircases of our commercial project in Borivali. What rating is required? The supplier has 1-hour and 2-hour doors.

FirePause Experts · Accepted Answer

Under NBC 2016 Part 4, fire doors installed at the entrance of fire escape staircases and lift lobbies in high-rise commercial structures must have a minimum **2-hour fire-resistance rating** (conforming to IS 3614). A 1-hour door is only permitted inside partition walls or low-height residential stairways. Always ensure the door assembly comes with a testing laboratory test tag.

What is the fire rating requirement for fire doors in high-rise escapes?

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