What is the primary purpose of an evacuation lift under this code?

To provide a safe and reliable means of vertical evacuation for persons with disabilities during an emergency, particularly a fire.

What are the minimum internal dimensions for an evacuation lift car?

1100 mm (width) x 2100 mm (depth), to accommodate a standard stretcher and attendants. (Table 1)

Is a separate power supply required?

Yes, a secondary, protected power supply is mandatory. It must automatically take over within 60 seconds and run the lift for a minimum of 2 hours. (Clause 5.5)

What kind of communication system is needed?

A two-way communication system is required, connecting the lift car to the building's fire service control room or a designated control point. (Clause 5.4)

IS 17462 Part 9

: 2020

Safety Rules for the Construction and Installation of Lifts — Lifts for the Transport of Persons and Goods — Part 9: Evacuation Lifts for Disabled Persons

CurrentSpecializedSafety CodeBIMFire Safety · Lifts, Escalators and Mechanical Handling

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This standard specifies the safety rules for the construction and installation of special evacuation lifts intended for use by persons with disabilities during an emergency. It outlines supplementary requirements to standard passenger lifts, focusing on fire protection of the lift well and lobbies, secondary power supply, two-way communication systems, and specific car dimensions to ensure safe evacuation.

Specifies additional safety rules for lifts that can be used for evacuation of disabled persons in an emergency.

Quick Reference Values

Minimum internal car width1100 mm

Minimum internal car depth2100 mm

Minimum clear door opening width900 mm

Maximum changeover time to secondary power supply60 s

Minimum duration of secondary power supply2 h

Minimum fire resistance rating for lift landing doors60 min

Practical Notes

This standard is crucial for high-rise buildings and must be read in conjunction with the National Building Code (Part 4: Fire and Life Safety).

The evacuation lift is distinct from a 'Fireman's Lift', though they can be a combined unit if all requirements of both standards are met.

Effective implementation requires close coordination between the architect, fire consultant, MEP engineer, and the lift manufacturer to ensure all protective measures and system interfaces are correctly designed and installed.