Main Changes

  1. Main Changes Volume 2
    1. Main changes made by the 2010 amendments.
      1. Main changes in the 2006 edition
        1. general
          1. Introduction

        Main Changes Volume 2




        Main changes made by the 2010 amendments.


        The amendment in March 2010 updated a number of references to European Standards. In particular, the guidance in Appendix B (Fire doors) was updated to take account of BS EN 81-58:2003 Safety rules for the construction and installation of lifts – Examination and tests. Landing doors fire resistance test. The amendment in October 2010 reflected the changes made as a result of the Building Regulations 2010, Building Approved Inspector etc. Regulations 2010. The changes mainly reflected regulation number changes as a result of re-ordering.


        Main changes in the 2006 edition

        This is the second impression of the 2006 Edition of Approved Document B which incorporates the typographical and proofing corrections issued in April 2007.
        This edition of Approved Document B, Fire safety, replaces the 2000 edition.
        The main changes are:


        1. Approved Document B: The Approved Document has been split into two volumes. Volume 1 deals with dwellinghouses, Volume 2 deals with buildings other than
        2. Fire safety information: A new Regulation 38 has been introduced to ensure that sufficient information is recorded to assist the eventual owner/occupier/ employer to meet their statutory duties under the Regulatory Reform (Fire Safety) Order



        1. Management of Premises: New guidance is given on the need to ensure that management regimes are
        2. Certification schemes: Suitable schemes may be accepted by Building Control Bodies as evidence of
        3. Residential sprinklers: The use of sprinkler systems in accordance with BS 9251:2005 is recognised.
        4. Alternative Approaches
          1. HTM 05 “Firecode” should be used for used for the design of hospitals and similar health care
          2. BB100 should be used for the design of schools.


          3. Fire Alarms in Flats: The guidance on smoke alarms in flats has been amended such that alarms should be installed in accordance with BS 5839-6:2004.

            Simple guidance has been retained, in the form of a commentary on this standard, so that most users of the Approved Document will necessarily not need to obtain a copy of the  standard.

            • All smoke alarms should have a standby power

        Fire Alarms: The guidance for buildings other than dwellings has been updated to take account of the 2002 edition of BS 5839-1.

        Means of Escape:

        1. Locks and child resistant safety stays may be provided on escape
        2. New guidance has been provided on the provision of galleries and inner inner

        Additional options of providing sprinkler protection and/or a protected stairway instead of alternative escape routes has been included for flats with more than one

            1. Guidance on the use of air circulation systems in flats with protected entrance halls or stairways is
            2. The provisions for smoke control in the common areas of flats have been
            3. Guidance on means of escape in buildings with open spatial planning has been
            • A method has been provided for calculating acceptable final exit widths for merging escape routes at ground floor
            • Guidance on the provision of cavity barriers associated with subdivided corridors has been moved to Section 3 and
            1. Guidance applicable to small premises, previously in BS 5588-11, has been incorporated into the
            2. New guidance on the design of residential care homes has been given including the use of sprinklers and/or free swing door closing Greater flexibility is also given where sprinkler systems are provided.
            3. Guidance on means of escape for disabled people has been incorporated in the general guidance on means of
            • In tall building with phased evacuation consideration needs to be given to the interaction of firefighters with people attempting to evacuate the
            • More detailed guidance has been provided on the protection of ventilation


            1. Compartment Walls: The predicted deflection of a floor, in the event of a fire, should be accommodated in the design of compartment
            2. sprinkler Protection in Flats: Sprinkler systems should be provided in blocks of flats exceeding 30m in
            3. Warehouses: A maximum compartment size has been introduced for unsprinklered singlestorey warehouse
            4. Concealed spaces: This section has been completely restructured. Table 13 (AD B 2000) has now been incorporated into the text to reduce


            Main changes are continued on the inside back  cover