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Main changes made by the 2020 amendments

The changes focus on the following fire safety provisions in blocks of flats:

a. Sprinklers: A reduction in the trigger height from 30m to 11m.

b. Wayfinding signage for the fire service: A new recommendation for floor identification and flat indication signage within blocks of flats with storeys over 11m.

In addition a typographical error is corrected in both volumes.

Purpose group number 2 is now included in reference to ‘residential’ buildings in the guidance on boundaries.

The changes are set out in the May 2020 AD B amendments.

Main changes made by the 2022 amendments

The changes focus on the following fire safety provisions:

a. Ban of combustible materials in and on the external walls of buildings: Consequential amendments following the laying of the Building (Amend