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:

        general

        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

        Introduction

        Introduction

        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.

            B1

          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

            B3

            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

        • 1 Gallery floors with no alternative exit Diagram 1 Gallery floors with no alternative exit
        • 2 Flat where all habitable rooms have direct access to an entrance hall Diagram 2 Flat where all habitable rooms have direct access to an entrance hall
        • 3 Flat with restricted travel distance from furthest point to entrance Diagram 3 Flat with restricted travel distance from furthest point to entrance
        • 4 Flat with an alternative exit but where all habitable rooms have no direct acess to an entrance hall Diagram 4 Flat with an alternative exit but where all habitable rooms have no direct access to an entrance hall
        • 5 Multi-storey flat with alternative exits from each habitable room except at entrance level 5 Multi-storey flat with alternative exits from each habitable room except at entrance level
        • 6 Multi-storey flat with protected entrance hall and landing Diagram 6 Multi-storey flat with protected entrance hall and landing
        • 7 Flats served by one common stair,png Diagram 7 Flats served by one common stair
        • 8 Flats served by more than one common stair 8 Flats served by more than one common stair
        • 9 Common escape route in small single stair building Diagram 9 Common escape route in small single stair building
        • 10 Travel distance in dead-end condition 10 Travel distance in dead-end condition
        • 11 Alternative escape routes 11 Alternative escape routes
        • 12 Inner room and access room 12 Inner room and access room
        • 13 Exits in a central core Diagram 13 Exits in a central core
        • 14 Open Connections Diagram 14 Open Connections
        • 15 Merging flows at final exit Diagram 15 Merging flows at final exit
        • 16 Subdivision of corridors Diagram 16 Subdivision of corridors
        • 17 Dead-end corridors Diagram 17 Dead-end corridors
        • 18 Maximum travel distances in a small two or three storey premises with a single protected stair to each storey Diagram 18 Maximum travel distances in a small two or three storey premises with a single protected stair to each storey
        • 19 Progressive horizontal evacuation in care homes Diagram 19 Progressive horizontal evacuation in care homes
        • 20 Refuge formed by compartmentation Diagram 20 Refuge formed by compartmentation
        • 21 Refuge formed in a protected stairway Diagram 21 Refuge formed in a protected stairway
        • 22 Max travel distance in a small three storey premises with a single stair to each storey Diagram 22 Max travel distance in a small three storey premises with a single stair to each storey
        • 23 Max travel distance in a small two storey premises with a single open stair Diagram 23 Max travel distance in a small two storey premises with a single open stair
        • 24 External protection to protected stairways Diagram 24 External protection to protected stairways
        • 25 Fire resistance of areas adjacent to external stairs 25 Fire resistance of areas adjacent to external stairs
        • 26 Lighting diffuser in relation to ceiling Diagram 26 Lighting diffuser in relation to ceiling
        • 27 Layout restrictions on Class 3 plastic roofflights TP-b rooflights and TP b lighting diffusers Diagram 27 Layout restrictions on Class 3 plastic rooflights TP-b rooflights and TP b lighting diffusers
        • 27a Layout restrictions on small Class 3 plastic rooflights TP b rooflights and lighting diffusers Diagram 27a Layout restrictions on small Class 3 plastic rooflights TP b rooflights and lighting diffusers
        • 28 Compartment floors illustration of guidance in paragraph 8.16 Diagram 28 Compartment floors illustration of guidance in paragraph 8.16
        • 29 Compartment walls and compartment floors with reference to relevant paragraphs in Section 8 Diagram 29 Compartment walls and compartment floors with reference to relevant paragraphs in Section 8
        • 30 Junction of compartment wall with roof Diagram 30 Junction of compartment wall with roof
        • 31 Protected shafts Diagram 31 Protected shafts
        • 32 Uninsulated glazed screen separating protected shaft from lobby or corridor Diagram 32 Uninsulated glazed screen separating protected shaft from lobby or corridor
        • 33 Provisions for cavity barriers Diagram 33 Provisions for cavity barriers
        • 34 Cavity wall excluded from provisions for cavity barriers Diagram 34 Cavity wall excluded from provisions for cavity barriers
        • 35 Fire-resisting ceiling below concealed space Diagram 35 Fire-resisting ceiling below concealed space
        • 36 Provisions for cavity barriers in double-skinned insulated roof sheeting Diagram 36 Provisions for cavity barriers in double-skinned insulated roof sheeting
        • 37 Pipes penetrating structure Diagram 37 Pipes penetrating structure
        • 38 Enclosure for drainage or water supply pipes Diagram 38 Enclosure for drainage or water supply pipes
        • 39 Flues penetrating compartment walls or floors Diagram 39 Flues penetrating compartment walls or floors
        • 40 Provisions for external surfaces or walls Diagram 40 Provisions for external surfaces or walls
        • 41 Relevant boundary Diagram 41 Relevant boundary
        • 42 Notional boundary Diagram 42 Notional boundary
        • 43 Status of combustible surface material as unprotected area Diagram 43 Status of combustible surface material as unprotected area
        • 44 Unprotected areas which may be disregarded in assessing the separation distance from the boundary Diagram 44 Unprotected areas which may be disregarded in assessing the separation distance from the boundary
        • 45 The effect of a canopy on separation distance Diagram 45 The effect of a canopy on separation distance
        • 46 Permitted unprotected areas in small residential buildings Diagram 46 Permitted unprotected areas in small residential buildings
        • 47 Limitations on spacing and size of plastic rooflights having a Class 3 or Class D-s3 d2 or TP b lower surface Diagram 47 Limitations on spacing and size of plastic rooflights having a Class 3 or Class D-s3 d2 or TP b lower surface
        • 48 Example of building footprint and perimeter Diagram 48 Example of building footprint and perimeter
        • 49 Relationship between buildings and hardstanding access roads for high reach fire appliances Diagram 49 Relationship between buildings and hardstanding access roads for high reach fire appliances
        • 50 Turning facilities Diagram 50 Turning facilities
        • 51 Provision of firefighting shafts Diagram 51 Provision of firefighting shafts
        • 52 Components of a firefighting shaft Diagram 52 Components of a firefighting shaft
        • 53 Fire-resisting construction for smoke outlet shafts Diagram 53 Fire-resisting construction for smoke outlet shafts
        • C1 Measurement of door width Diagram C1 Measurement of door width
        • C2 Cubic capacity Diagram C2 Cubic capacity
        • C3 Area Diagram C3 Area
        • C4 Height of building Diagram C4 Height of building
        • C5 Number of storeys Diagram C5 Number of storeys
        • C6 Height of top storey in buildingC6 Height of top storey in building Diagram C6 Height of top storey in building
        • C7 Free area of smoke ventilators Diagram C7 Free area of smoke ventilators
        • D1 Classification of Purpose Groups Diagram D1 Classification of Purpose Groups
        • E1 Recessed car parking areas Diagram E1 Recessed car parking areas
        • Table 1 Limitations on distance of travel in common areas of blocks of flats - see par 2.23 Table 1 Limitations on distance of travel in common areas of blocks of flats - see par 2.23
        • Table 2 Limitations on travel distance Table 2 Limitations on travel distance
        • Table 3 Minimum number of escape routes and exits from a room tier or storey Table 3 Minimum number of escape routes and exits from a room tier or storey
        • Table 4 Widths of escape routes and exits Table 4 Widths of escape routes and exits
        • Table 5 Maximum distances of travel in small premises with a protected stair Table 5 Maximum distances of travel in small premises with a protected stair
        • Table 6 Minimum widths of escape stairs Table 6 Minimum widths of escape stairs
        • Table 7 Capacity of a stair for basements and for simultaneous evacuation of the building Table 7 Capacity of a stair for basements and for simultaneous evacuation of the building
        • Table 8 Minimum width of stairs designed for phased evacuation Table 8 Minimum width of stairs designed for phased evacuation
        • Table 9 Provisions for escape lighting Table 9 Provisions for escape lighting
        • Table 10 Classification of linings Table 10 Classification of linings
        • Table 11 Limitations applied to thermoplastic rooflights and lighting diffusers in suspended ceilings and Class 3 plastic rooflights Table 11 Limitations applied to thermoplastic rooflights and lighting diffusers in suspended ceilings and Class 3 plastic rooflights
        • Table 12 Maximum dimensions of building or compartment - non-residential buildings Table 12 Maximum dimensions of building or compartment - non-residential buildings
        • Table 13 Maximum dimensions of cavities in non-domestic buildings - purpose Groups 2-7 Table 13 Maximum dimensions of cavities in non-domestic buildings - purpose Groups 2-7
        • Table 14 Maximum nominal internal diameter of pipes passing through a compartment wall-floor - see par 10.5 onwards Table 14 Maximum nominal internal diameter of pipes passing through a compartment wall-floor - see par 10.5 onwards
        • Table 15 Permitted unprotected areas in small buildings or compartments Table 15 Permitted unprotected areas in small buildings or compartments
        • Table 16 Limitations on roof coverings Table 16 Limitations on roof coverings
        • Table 17 Class 3 or Class D-s3 d2 plastic rooflights limitations on use and boundary distance Table 17 Class 3 or Class D-s3 d2 plastic rooflights limitations on use and boundary distance
        • Table 18 TP a and TP b plastic rooflights limitations on use and boundary distance Table 18 TP a and TP b plastic rooflights limitations on use and boundary distance
        • Table 19 Fire and rescue service vehicle access to buildings excluding blocks of flats not fitted with fire mains Table 19 Fire and rescue service vehicle access to buildings excluding blocks of flats not fitted with fire mains
        • Table 20 Typical fire and rescue service vehicle access route specification Table 20 Typical fire and rescue service vehicle access route specification
        • 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 Table A2 Minimum periods of fire resistance
        • 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 materials of limited combustibility Table A7 Use and definitions of materials of limited combustibility
        • Table A8 Typical performance rating of some generic materials and products Table A8 Typical performance rating of some generic materials and products
        • Table B1 Provisions for fire doors Table B1 Provisions for fire doors
        • Table C1 Floor space factors Table C1 Floor space factors
        • Table D1 Classification of Purpose Groups Table D1 Classification of Purpose Groups
        • Table Maximum dimensions of building or compartment - non-residential buildings Table Maximum dimensions of building or compartment (non-residential buildings)