MAIN CHANGES VOLUME 1

  1. Main changes made by the 2013 amendments
    1. Main changes made by the 2010 amendments
      1. Main changes in the 2006 edition
        1. General
          1. Introduction
            1. B1
              1. B3
                1. B4
                  1. B5
                    1. Appendix B

                    Main changes made by the 2013 amendments

                    The general guidance on materials and workmanship and the Construction Products Directive has been edited and a reference to Approved Document 7 put in its place. The standard for smoke alarms has been updated to BS EN 14604 Smoke alarm devices.

                    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. 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 edition of Approved Document B, Fire safety, replaces the 2000 edition. The main changes are:

                    General

                    a. Approved Document B: The Approved Document has been split into two volumes. Volume 1 deals with dwellinghouses, Volume 2 deals with buildings other than dwellinghouses. Wherever possible the guidance in Volume 1 has been tailored and simplified to be more directly relevant to dwellinghouses.

                    Introduction

                    b. Certification Schemes: Suitable schemes may be accepted by Building Control Bodies as evidence of compliance. c. Residential Sprinklers: The use of sprinkler systems in accordance with BS 9251:2005 is recognised. d. Adult Placements: Reference is made to the code of practice for fire safety in adult placements.

                    B1

                    e. Fire Alarms: The guidance on smoke alarms 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 not necessarily need to obtain a copy of the standard. All smoke alarms should have a standby power supply. Where a dwellinghouse is extended smoke alarms should be provided in the circulation spaces. f.  Means of escape: The guidance on means of escape has been restructured to make it easier to use.

                    i. Additional guidance has been provided in relation to work on existing houses. ii. Locks and child resistant safety stays may be provided on escape windows. iii. The alternative approach for loft conversions to two storey houses has been removed. iv. New guidance has been provided on the provision of galleries and inner inner rooms. v. An option of providing sprinkler protection instead of alternative escape routes has been included for dwellinghouses with a floor more than 7.5m above ground level. vi. Guidance on the application of B1 to replacement windows has been included. vii. Guidance on the use of air circulation systems in houses with protected stairways is given.

                    B3

                    1. Integral Garages: The provision of a sloping floor has been included as an alternative to the 100mm step between dwellinghouses and integral
                    2. Compartmentation: Guidance on the junction between compartment walls and roofs has been clarified and
                    3. Cavity Barriers: Window and door frames are only suitable for use as cavity barriers if they are constructed of steel or timber of an appropriate

                    B4

                    j. Roof Coverings: The guidance on roof coverings incorporates the new European system of classification set out in BS EN 13501-5:2005

                    B5

                    k. Vehicle Access: There should be access for a pump appliance to within 45m of all points within a dwellinghouse

                    Appendix B

                    1. Self-Closing Devices: Other than doors between a dwellinghouse and an integral garage, fire doors need not be provided with self closing

                    • Diagram1- Means of escape form dwellinghouses Diagram1 - Means of escape form dwellinghouses
                    • Diagram 2 - Alternative arrangements for final exits Diagram 2 - Alternative arrangements for final exits
                    • Diagram 3 - Fire separation in houses with more than one floor over 4.5m above ground level Diagram 3 - Fire separation in houses with more than one floor over 4.5m above ground level
                    • Diagram 4 - Ground or basement storey exit into an enclosed space Diagram 4 - Ground or basement storey exit into an enclosed space.
                    • Diagram 5 - Gallery floors with no alternative exit
                    • Diagram 6 - Alternative cavity barrier arrangements in roof space over protected stairway in a house with a floor more than 4.5m above ground level Diagram 6 - Alternative cavity barrier arrangements in roof space over protected stairway in a house with a floor more than 4.5m above ground level
                    • Diagram 7 - Fire resistance of areas adjacent to external stairs Diagram 7 - Fire resistance of areas adjacent to external stairs
                    • Diagram 8 - Lighting diffuser in relation to ceiling Diagram 8 - Lighting diffuser in relation to ceiling
                    • Diagram 9 - Layout restrictions on Class 3 plastice rooflights, TP(b) rooflights and TP(b) lighting diffusers Diagram 9 - Layout restrictions on Class 3 plastice rooflights, TP(b) rooflights and TP(b) lighting diffusers
                    • Diagram 10 - Separation between garage and dwellinghouse Diagram 10 - Separation between garage and dwellinghouse
                    • Diagram 11 - Junction of compartment wall with roof Diagram 11 - Junction of compartment wall with roof
                    • Diagram 12 - Interrupting concealed spaces (cavities) Diagram 12 - Interrupting concealed spaces (cavities)
                    • Diagram 13 - Cavity walls excluded from provisions for cavity barriers Diagram 13 - Cavity walls excluded from provisions for cavity barriers
                    • Diagram 14 - Pipes penetrating structure Diagram 14 - Pipes penetrating structure
                    • Diagram 15 - Enclosure for drainage or water supply pipes Diagram 15 - Enclosure for drainage or water supply pipes
                    • Diagram 16 - Fules penetrating compartment walls or floors Diagram 16 - Fules penetrating compartment walls or floors
                    • Diagram 17 - Relevant boundary Diagram 17 - Relevant boundary
                    • Diagram 18 - Notional boundary Diagram 18 - Notional boundary
                    • Diagram 19 - Status of combustible surface material as unprotected area Diagram 19 - Status of combustible surface material as unprotected area
                    • Diagram 20 - Unprotected areas which may be disregarded in assessing the separation distances from the boundry Diagram 20 - Unprotected areas which may be disregarded in assessing the separation distances from the boundry
                    • Diagram 21 - The effect of a conopy on separation distance Diagram 21 - The effect of a conopy on separation distance
                    • Diagram 22 - Permitted unprotected areas for Method 1 Diagram 22 - Permitted unprotected areas for Method 1
                    • Diagram 23 - Limitations on spacing and size of plastic rooflights having a Class 3 (National class) or Class D-s3, d2 (European class) or TP(b) lower surface Diagram 23 - Limitations on spacing and size of plastic rooflights having a Class 3 (National class) or Class D-s3, d2 (European class) or TP(b) lower surface
                    • Diagram 24 - Turning facilities Diagram 24 - Turning Facilities
                    • Table 1 - Classification of linings Table 1 - Classification of linings
                    • Table 3 - Maximum nominal internal diameter of pipes passing through a fire separating element Table 3 - Maximum nominal internal diameter of pipes passing through a fire separating element
                    • Table 3 - Maximum nominal internal diameter of pipes passing through a fire separating element Table 3 - Maximum nominal internal diameter of pipes passing through a fire separating element
                    • Table 4 - Permitted unprotected areas for Method 2 Table 4 - Permitted unprotected areas for Method 2
                    • Table 5 - Limitations on rood coverings Table 5 - Limitations on rood coverings
                    • Table 6- Class 3 (National class) or Class D-s3, d2 (eurpean class) plstic rooflights - limitations on use and boundary distance Table 6- Class 3 (National class) or Class D-s3, d2 (eurpean class) plstic rooflights - limitations on use and boundary distance
                    • Table 7 - TP (a) and TP (b) plastic rooflights- limitations on use and boundary distance Table 7 - TP (a) and TP (b) plastic rooflights- limitations on use and boundary distance
                    • Table A8 - Typical performance ratings of some generic materails and products Table A8 - Typical performance ratings of some generic materails and products
                    • Table A1 - Specific provisions of test for fire resistance of elements of structure etc Table A1 - Specific provisions of test for fire resistance of elements of structure etc
                    • Table A1 continued Table A1 continued
                    • Table A2 - Minimum periods of fire resistance for dwellinghouses Table A2 - Minimum periods of fire resistance for dwellinghouses
                    • Table A3 - Limitations on fire - protecting suspended ceilings (see Table A1, Note 4) Table A3 - Limitations on fire - protecting suspended ceilings (see Table A1, Note 4)
                    • Table A4 - Limitations on the use of uninsulated glazed elements on escape routes Table A4 - Limitations on the use of uninsulated glazed elements on escape routes
                    • Table A5 - Notional designations of roof coverings Table A5 - Notional designations of roof coverings
                    • Table A6 - Use and definitions of non-combustible materials Table A6 - Use and definitions of non-combustible materials
                    • Table A7 - Use and definitions of materails of limited combustibillty Table A7 - Use and definitions of materails of limited combustibillty
                    • Table A8 - Typical performance ratings of some generic materails and products Table A8 - Typical performance ratings of some generic materails and products
                    • Table B1 Provision for fire doors Table B1 Provision for fire doors
                    • Table  C1 - Height of top storey in building Table C1 - Height of top storey in building
                    • Table D1 - Classification of Purpose Groups Table D1 - Classification of Purpose Groups