What is the correct sequence for demolishing a building?

Demolition must proceed story by story from top to bottom, removing non-load-bearing walls first, followed by floors and then load-bearing structures (Clause 6).

How should debris be removed from upper floors?

Materials should not be thrown indiscriminately. Enclosed wooden or metal chutes must be used if dropping debris from a height greater than 6 meters.

Are barricades required around a demolition site?

Yes, a protective barricade or hoarding at least 2 meters high must be erected around the site to prevent unauthorized access and protect the public (Clause 5).

IS 4130

: 1991

Code of practice for demolition of buildings

CurrentSpecializedSafety CodeStructural Engineering · Construction Safety and Practices

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This code prescribes safety requirements, precautions, and the systematic sequence of operations for the safe demolition of buildings to protect workers, the public, and adjacent properties.

Lays down methods and safety precautions for the demolition of buildings and structures.

Quick Reference Values

Minimum height of protective barricade/hoarding2 m

Height above which enclosed chutes are mandatory for debris6 m

Minimum slope for enclosed debris chutes45 degrees to the horizontal

Practical Notes

Ensure all utilities (water, gas, electricity) are completely disconnected and safely capped outside the property line before any demolition work begins.

Demolition must strictly proceed from top to bottom; load-bearing members should never be removed before the elements they support.

Hazardous materials like asbestos or toxic dust require specialized removal, protective gear, and safe disposal methods prior to general demolition.