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  • BS 5268-2(2002) : 2002

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    STRUCTURAL USE OF TIMBER - PART 2: CODE OF PRACTICE FOR PERMISSIBLE STRESS DESIGN, MATERIALS AND WORKMANSHIP

    Available format(s):  Hardcopy, PDF

    Superseded date:  24-11-2009

    Language(s):  English

    Published date:  01-01-2002

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Committees responsible
    Foreword
    Section 1. General
      1.1 Scope
      1.2 Normative references
      1.3 Terms and definitions
      1.4 Symbols
      1.5 Materials
      1.6 Design considerations
    Section 2. Timber
      2.1 General
      2.2 Timber specification
      2.3 Species
      2.4 Dimensions and geometrical properties
      2.5 Grades
      2.6 Grade stresses for strength classes and individual species
      2.7 Additional properties
      2.8 Duration of loading
      2.9 Load-sharing systems
      2.10 Flexural members
      2.11 Compression members
      2.12 Tension members
    Section 3. Glued laminated timber
      3.1 General
      3.2 Grade stresses for horizontally glued laminated members
      3.3 Grade stresses for vertically glued laminated beams
      3.4 Glued end joints in glued laminated timber
      3.5 Glued laminated flexural members
      3.6 Glued laminated compression members
      3.7 Glued laminated tension members
    Section 4. Plywood
      4.1 General
      4.2 Durability
      4.3 Dimensions and section properties
      4.4 Grades
      4.5 Grade stresses and moduli
      4.6 Design data derived from characteristic values
      4.7 Flexural members
      4.8 Plywoods for roof and floor decking
    Section 5. Panel products other than plywood
      5.1 General
      5.2 Section properties
      5.3 Strength and elastic moduli
      5.4 Panel products for roof and floor decking
    Section 6. Joints
      6.1 General
      6.2 Joint slip
      6.3 Anti-corrosion treatment
      6.4 Nailed joints
      6.5 Screwed joints
      6.6 Bolted and dowelled joints
      6.7 Toothed-plate connector joints
      6.8 Split-ring connector joints
      6.9 Shear-plate connector joints
      6.10 Glued joints
    Section 7. Workmanship, inspection and maintenance
      7.1 General
      7.2 Moisture content
      7.3 Machining and preparation
      7.4 Joints
      7.5 Transportation, storage and handling
      7.6 Assembly and erection
      7.7 Treatments
      7.8 Inspection
      7.9 Maintenance
    Section 8. Testing
      8.1 General
      8.2 Testing authority
      8.3 Information required
      8.4 Quality and manufacture of test structure
      8.5 Method of testing
      8.6 Acceptance
      8.7 Test report
      8.8 Use of tested structures
      8.9 Testing of roof and floor decking assemblies
    Annex B (normative) - Modification factor for compression members
    Annex C (normative) - Efficiency ratings of glued end joints in
            softwoods
    Annex D (informative) - Species of timber used in the manufacture
            of plywood
    Annex E (informative) - Grade marks for plywood
    Annex G (informative) - Derivation of the basic lateral load-carrying
            capacities referred to in section 6
    Annex H (normative) - Moisture content determination by oven dry
            method
    Annex L (informative) - K factors
    Annex M (normative) - Supplementary accidental damage provisions
    Bibliography

    Abstract - (Show below) - (Hide below)

    Describes guidance on the structural use of timber, glued laminated timber, plywood and other panel products in load-bearing members.

    General Product Information - (Show below) - (Hide below)

    Committee B/525/5
    Development Note Supersedes BS 5268-2(1996) and 00/104922 DC. (04/2002) Also available as part of BS PP7312(2002). (06/2002) Supersedes 07/30156974 DC. (01/2008)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 8217(2005) : 2005 REINFORCED BITUMEN MEMBRANES FOR ROOFING - CODE OF PRACTICE
    BS 5268-7.3(1989) : 1989 STRUCTURAL USE OF TIMBER - PART 7: RECOMMENDATIONS FOR THE CALCULATION BASIS FOR SPAN TABLES - SECTION 7.3: CEILING JOISTS
    BS 5268-4.1(1978) : 1978 STRUCTURAL USE OF TIMBER - PART 4: FIRE RESISTANCE OF TIMBER STRUCTURES - SECTION 4.1: RECOMMENDATIONS FOR CALCULATING FIRE RESISTANCE OF TIMBER MEMBERS
    BS 5268-7.4(1989) : 1989 STRUCTURAL USE OF TIMBER - PART 7: RECOMMENDATIONS FOR THE CALCULATION BASIS FOR SPAN TABLES - SECTION 7.4: CEILING BINDERS
    11/30238044 DC : 0 BS 5756:2007+A1 - VISUAL GRADING OF HARDWOOD SPECIFICATION
    07/30150912 DC : 0 BS 5975 - CODE OF PRACTICE FOR THE PROCEDURAL CONTROL OF TEMPORARY WORKS AND THE PERMISSIBLE STRESS DESIGN OF FALSEWORK
    BS 1088-1(2003) : 2003 MARINE PLYWOOD - PART 1: REQUIREMENTS
    07/30043554 DC : 0 BS 5385-5 - WALL AND FLOOR TILING - PART 5: DESIGN AND INSTALLATION OF TERRAZZO, NATURAL STONE AND AGGLOMERATED STONE TILES AND SLABS - CODE OF PRACTICE
    BS 5975(2008) : 2008 CODE OF PRACTICE FOR TEMPORARY WORKS PROCEDURES AND THE PERMISSIBLE STRESS DESIGN OF FALSEWORK
    06/30148361 DC : DRAFT APR 2006 BS 4978 - VISUAL STRENGTH GRADING OF SOFTWOOD - SPECIFICATION
    BS 6180(1999) : 1999 BARRIERS IN AND ABOUT BUILDINGS - CODE OF PRACTICE
    11/30238046 DC : 0 BS 4978:2007+A1 - VISUAL STRENGTH GRADING OF SOFTWOOD SPECIFICATION
    BS 5974(2010) : 2010 CODE OF PRACTICE FOR THE PLANNING, DESIGN, SETTING UP AND USE OF TEMPORARY SUSPENDED ACCESS EQUIPMENT
    BS 5534(2003) : 2003 CODE OF PRACTICE FOR SLATING AND TILING (INCLUDING SHINGLES)
    BS 1133-8(1991) : 1991 PACKAGING CODE - SECTION 8: WOODEN BOXES, CASES AND CRATES
    DEFSTAN 02-188/1(2000) : 2000 REQUIREMENTS FOR THE PROCUREMENT, STORAGE AND USE OF TIMBER
    BS 5385-3(2014) : 2014 WALL AND FLOOR TILING - PART 3: DESIGN AND INSTALLATION OF INTERNAL AND EXTERNAL CERAMIC AND MOSAIC FLOOR TILING IN NORMAL CONDITIONS - CODE OF PRACTICE
    BS EN 1995-1-2 NA : 2004 UK NATIONAL ANNEX TO EUROCODE 5: DESIGN OF TIMBER STRUCTURES - PART 1-2: GENERAL - STRUCTURAL FIRE DESIGN
    BS 8103-3(2009) : 2009 STRUCTURAL DESIGN OF LOW-RISE BUILDINGS - PART 3: CODE OF PRACTICE FOR TIMBER FLOORS AND ROOFS FOR HOUSING
    BS 585-2(1985) : 1985 WOOD STAIRS - PART 2: SPECIFICATION FOR PERFORMANCE REQUIREMENTS FOR DOMESTIC STAIRS CONSTRUCTED OF WOOD-BASED MATERIALS
    BS 5268-7.1(1989) : 1989 STRUCTURAL USE OF TIMBER - PART 7: RECOMMENDATIONS FOR THE CALCULATION BASIS FOR SPAN TABLES - SECTION 7.1 DOMESTIC FLOOR JOISTS
    08/30181828 DC : DRAFT MAY 2008 BS 5979 - CODE OF PRACTICE FOR THE PLANNING, DESIGN, SETTING UP AND USE OF TEMPORARILY INSTALLED SUSPENDED ACCESS EQUIPMENT
    BS 5268-7.6(1990) : 1990 STRUCTURAL USE OF TIMBER - PART 7: RECOMMENDATION FOR THE CALCULATION BASIS FOR SPAN TABLES - SECTION 7.6: PURLINS SUPPORTING RAFTERS
    04/30092680 DC : DRAFT MAR 2004 BS 6037-2 - CODE OF PRACTICE FOR THE PLANNING, DESIGN, INSTALLATION AND USE OF PERMANENTLY INSTALLED ACCESS EQUIPMENT - PART 2: TRAVELLING LADDERS AND GANTRIES
    BS 5395-2(1984) : 1984 STAIRS, LADDERS AND WALKWAYS - PART 2: CODE OF PRACTICE FOR THE DESIGN OF HELICAL AND SPIRAL STAIRS
    BS 5385-5(2009) : 2009 WALL AND FLOOR TILING - PART 5: DESIGN AND INSTALLATION OF TERRAZZO, NATURAL STONE AND AGGLOMERATED STONE TILE AND SLAB FLOORING - CODE OF PRACTICE
    BS 6948(1989) : 1989 METHODS OF TEST FOR MECHANICALLY FASTENED JOINTS IN TIMBER AND WOOD-BASED MATERIALS
    BS 5268-5(1989) : 1989 STRUCTURAL USE OF TIMBER - CODE OF PRACTICE FOR THE PRESERVATIVE TREATMENT OF STRUCTURAL TIMBER
    S.R. 50-2:2012 BUILDING SERVICES CODE OF PRACTICE - PART 2: THERMAL SOLAR SYSTEMS
    06/30148363 DC : DRAFT APR 2006 BS 5756 - VISUAL STRENGTH GRADING OF HARDWOOD - SPECIFICATION
    BS 6180(1982) : 1982 CODE OF PRACTICE FOR PROTECTIVE BARRIERS IN AND ABOUT BUILDINGS
    BS 5385-5(1994) : 1994 WALL AND FLOOR TILING - PART 5: CODE OF PRACTICE FOR THE DESIGN AND INSTALLATION OF TERRAZZO TILE AND SLAB, NATURAL STONE AND COMPOSITION BLOCK FLOORINGS
    BS 5268-7.2(1989) : 1989 STRUCTURAL USE OF TIMBER - PART 7: RECOMMENDATIONS FOR THE CALCULATION BASIS FOR SPAN TABLES - SECTION 7.2 JOISTS FOR FLAT ROOFS
    BS 5268-6.1(1996) : 1996 STRUCTURAL USE OF TIMBER - PART 6: CODE OF PRACTICE FOR TIMBER FRAME WALLS - SECTION 6.1: DWELLINGS NOT EXCEEDING SEVEN STOREYS
    17/30349707 DC : DRAFT AUG 2017 BS 5975:2018 - CODE OF PRACTICE FOR TEMPORARY WORKS PROCEDURES AND THE PERMISSIBLE STRESS DESIGN OF FALSEWORK
    BS 5516-1(2004) : 2004 PATENT GLAZING AND SLOPING GLAZING FOR BUILDINGS - PART 1: CODE OF PRACTICE FOR DESIGN AND INSTALLATION OF SLOPING AND VERTICAL PATENT GLAZING
    BS 5268-7.7(1990) : 1990 STRUCTURAL USE OF TIMBER - PART 7: RECOMMENDATIONS FOR THE CALCULATION BASIS FOR SPAN TABLES - SECTION 7.7 PURLINS SUPPORTING SHEETING OR DECKING
    BS 6229(2003) : 2003 FLAT ROOFS WITH CONTINUOUSLY SUPPORTED COVERINGS - CODE OF PRACTICE
    BS 5268-3(2006) : 2006 STRUCTURAL USE OF TIMBER - PART 3: CODE OF PRACTICE FOR TRUSSED RAFTER ROOFS
    14/30283603 DC : 0 BS 5385-3 - WALL AND FLOOR TILING - PART 3: DESIGN AND INSTALLATION OF INTERNAL ANDEXTERNAL CERAMIC AND MOSAIC FLOOR TILING IN NORMAL CONDITIONS - CODE OF PRACTICE
    BS 5756(2007) : 2007 VISUAL STRENGTH GRADING OF TEMPERATE HARDWOOD - SPECIFICATION
    07/30016130 DC : 0 BS 5974 - CODE OF PRACTICE FOR THE PLANNING, DESIGN, SETTING UP AND USE OF TEMPORARILY INSTALLED SUSPENDED ACCESS EQUIPMENT
    02/105033 DC : DRAFT AUG 2002 BS 5534 - CODE OF PRACTICE FOR SLATING AND TILING (INCLUDING SHINGLES)
    BS 6037-2(2004) : 2004 CODE OF PRACTICE FOR THE PLANNING, DESIGN, INSTALLATION AND USE OF PERMANENTLY INSTALLED ACCESS EQUIPMENT - PART 2: TRAVELLING LADDERS AND GANTRIES
    BS 5628-3(2005) : 2005 CODE OF PRACTICE FOR THE USE OF MASONRY - PART 3: MATERIALS AND COMPONENTS, DESIGN AND WORKMANSHIP
    03/303957 DC : DRAFT APR 2003 BS 5385 - WALL AND FLOOR TILING - PART 3: CODE OF PRACTICE FOR THE DESIGN AND INSTALLATION OF INTERNAL AND EXTERNAL CERAMIC FLOOR TILES AND MOSAICS IN NORMAL CONDITIONS
    BS 5589(1989) : 1989 CODE OF PRACTICE FOR PRESERVATION OF TIMBER
    I.S. 193:2006 TIMBER TRUSSES FOR ROOFS
    BS 6700(2006) : 2006 DESIGN, INSTALLATION, TESTING AND MAINTENANCE OF SERVICES SUPPLYING WATER FOR DOMESTIC USE WITHIN BUILDINGS AND THEIR CURTILAGES - SPECIFICATION
    08/30140202 DC : 0 BS 8103-3 - STRUCTURAL DESIGN OF LOW-RISE BUILDINGS - PART 3: CODE OF PRACTICE FOR TIMBER FLOORS AND ROOFS FOR HOUSING
    BS 6037-1(2003) : 2003 CODE OF PRACTICE FOR THE PLANNING, DESIGN, INSTALLATION AND USE OF PERMANENTLY INSTALLED ACCESS EQUIPMENT - SUSPENDED ACCESS EQUIPMENT
    BS 5385-3(2007) : 2007 WALL AND FLOOR TILING - PART 3: DESIGN AND INSTALLATION OF INTERNAL AND EXTERNAL CERAMIC AND MOSAIC FLOOR TILING IN NORMAL CONDITIONS - CODE OF PRACTICE
    BS 5975(2008) : 2019 CODE OF PRACTICE FOR TEMPORARY WORKS PROCEDURES AND THE PERMISSIBLE STRESS DESIGN OF FALSEWORK
    BS 6349-1(2000) : 2000 MARITIME STRUCTURES - PART 1: CODE OF PRACTICE FOR GENERAL CRITERIA
    I.S. 444:1998 THE USE OF STRUCTURAL TIMBER IN BUILDINGS
    BS 6229:2003 FLAT ROOFS WITH CONTINUOUSLY SUPPORTED COVERINGS - CODE OF PRACTICE
    BS 5756(2007) : 2007 VISUAL STRENGTH GRADING OF TEMPERATE HARDWOOD - SPECIFICATION
    BS 1133-8:1991 PACKAGING CODE - SECTION 8: WOODEN BOXES, CASES AND CRATES
    BS 5975(2008) : 2008 CODE OF PRACTICE FOR TEMPORARY WORKS PROCEDURES AND THE PERMISSIBLE STRESS DESIGN OF FALSEWORK
    BS 5974:2010 CODE OF PRACTICE FOR THE PLANNING, DESIGN, SETTING UP AND USE OF TEMPORARY SUSPENDED ACCESS EQUIPMENT
    BS 6037-1:2003 CODE OF PRACTICE FOR THE PLANNING, DESIGN, INSTALLATION AND USE OF PERMANENTLY INSTALLED ACCESS EQUIPMENT - SUSPENDED ACCESS EQUIPMENT
    BS 5975(2008) : 2019 CODE OF PRACTICE FOR TEMPORARY WORKS PROCEDURES AND THE PERMISSIBLE STRESS DESIGN OF FALSEWORK
    BS 5268-6.1:1996 (published 2007-11) Structural use of timber Code of practice for timber frame walls - Dwellings not exceeding seven storeys

    Standards Referencing This Book - (Show below) - (Hide below)

    BS EN 322 : 1993 WOOD-BASED PANELS - DETERMINATION OF MOISTURE CONTENT
    BS EN 622-5 : 2009 FIBREBOARDS - SPECIFICATIONS - PART 5: REQUIREMENTS FOR DRY PROCESS BOARDS (MDF)
    DD ENV 12872 : 2000 WOOD-BASED PANELS - GUIDANCE ON THE USE OF LOAD-BEARING BOARDS IN FLOORS, WALLS AND ROOFS
    BS EN 314-2 : 1993 PLYWOOD - BONDING QUALITY - PART 2: REQUIREMENTS
    BS EN 789 : 2004 TIMBER STRUCTURES - TEST METHODS - DETERMINATION OF MECHANICAL PROPERTIES OF WOOD BASED PANELS
    BS 6150(2006) : 2006 PAINTING OF BUILDINGS - CODE OF PRACTICE
    BS 5756(2007) : 2007 VISUAL STRENGTH GRADING OF TEMPERATE HARDWOOD - SPECIFICATION
    BS EN 622-3 : 2004 FIBREBOARDS - SPECIFICATIONS - PART 3: REQUIREMENTS FOR MEDIUM BOARDS
    BS 8417(2003) : 2003 PRESERVATION OF TIMBER - RECOMMENDATIONS
    BS EN 622-2 : 2004 FIBREBOARDS - SPECIFICATIONS - PART 2: REQUIREMENTS FOR HARDBOARDS
    BS EN 323 : 1993 WOOD-BASED PANELS - DETERMINATION OF DENSITY
    BS EN 314-1 : 2004 PLYWOOD - BONDING QUALITY - PART 1: TEST METHODS
    BS 5268-6.1(1996) : 1996 STRUCTURAL USE OF TIMBER - PART 6: CODE OF PRACTICE FOR TIMBER FRAME WALLS - SECTION 6.1: DWELLINGS NOT EXCEEDING SEVEN STOREYS
    BS 6399-3(1988) : 1988 LOADING FOR BUILDINGS - PART 3: CODE OF PRACTICE FOR IMPOSED ROOF LOADS
    ISO 3898:2013 Bases for design of structures Names and symbols of physical quantities and generic quantities
    BS 5268-4.1(1978) : 1978 STRUCTURAL USE OF TIMBER - PART 4: FIRE RESISTANCE OF TIMBER STRUCTURES - SECTION 4.1: RECOMMENDATIONS FOR CALCULATING FIRE RESISTANCE OF TIMBER MEMBERS
    DD ENV 1099 : 1998 PLYWOOD - BIOLOGICAL DURABILITY - GUIDANCE FOR THE ASSESSMENT OF PLYWOOD FOR USE IN DIFFERENT HAZARD CLASSES
    BS 7916(1998) : 1998 CODE OF PRACTICE FOR THE SELECTION AND APPLICATION OF PARTICLEBOARD, ORIENTED STRAND BOARD (OSB), CEMENT BONDED PARTICLEBOARD AND WOOD FIBREBOARDS FOR SPECIFIC PURPOSES
    BS 5268-4.2(1990) : 1990 STRUCTURAL USE OF TIMBER - FIRE RESISTANCE OF TIMBER STRUCTURES - RECOMMENDATION FOR CALCULATING FIRE RESISTANCE OF TIMBER STUD WALLS AND JOISTED FLOOR CONSTRUCTIONS
    BS EN 12369-2 : 2011 WOOD-BASED PANELS - CHARACTERISTIC VALUES FOR STRUCTURAL DESIGN - PART 2: PLYWOOD
    BS 1202-1(2002) : 2002 SPECIFICATION FOR NAILS - PART 1: STEEL NAILS
    BS EN ISO 898-1 : 2013 MECHANICAL PROPERTIES OF FASTENERS MADE OF CARBON STEEL AND ALLOY STEEL - PART 1: BOLTS, SCREWS AND STUDS WITH SPECIFIED PROPERTY CLASSES - COARSE THREAD AND FINE PITCH THREAD (ISO 898-1:2013)
    BS EN 1912:2012 Structural Timber. Strength classes. Assignment of visual grades and species
    BS EN 300 : 2006 ORIENTED STRAND BOARDS (OSB) - DEFINITIONS, CLASSIFICATION AND SPECIFICATIONS
    BS EN 338:2016 STRUCTURAL TIMBER - STRENGTH CLASSES
    BS EN 310 : 1993 WOOD-BASED PANELS - DETERMINATION OF MODULUS OF ELASTICITY IN BENDING AND OF BENDING STRENGTH
    BS EN 312 : 2010 PARTICLEBOARDS - SPECIFICATIONS
    BS EN 380:1993 (published 1993-11) Timber structures. Test methods. General principles for static load testing
    BS 5268-3(2006) : 2006 STRUCTURAL USE OF TIMBER - PART 3: CODE OF PRACTICE FOR TRUSSED RAFTER ROOFS
    BS EN 1195 : 1998 TIMBER STRUCTURES - TEST METHODS - PERFORMANCE OF STRUCTURAL FLOOR DECKING
    BS EN 12871 : 2013 WOOD-BASED PANELS - DETERMINATION OF PERFORMANCE CHARACTERISTICS FOR LOAD BEARING PANELS FOR USE IN FLOORS, ROOFS AND WALLS
    BS 6399-2(1997) : 1997 LOADING FOR BUILDINGS - PART 2: CODE OF PRACTICE FOR WIND LOADS
    BS EN 385 : 2001 FINGER JOINTED STRUCTURAL TIMBER - PERFORMANCE REQUIREMENTS AND MINIMUM PRODUCTION REQUIREMENTS
    BS EN 912 : 2011 TIMBER FASTENERS - SPECIFICATION FOR CONNECTORS FOR TIMBERS
    BS 6399-1(1996) : 1996 LOADING FOR BUILDINGS - PART 1: CODE OF PRACTICE FOR DEAD AND IMPOSED LOADS
    BS EN 12369-1 : 2001 WOOD-BASED PANELS - CHARACTERISTIC VALUES FOR STRUCTURAL DESIGN : OSB, PARTICLEBOARDS AND FIBREBOARDS
    BS EN 301:2013 ADHESIVES, PHENOLIC AND AMINOPLASTIC, FOR LOAD-BEARING TIMBER STRUCTURES - CLASSIFICATION AND PERFORMANCE REQUIREMENTS
    BS 1210(1963) : 1963 SPECIFICATION FOR WOOD SCREWS
    BS EN 636 : 2012 PLYWOOD - SPECIFICATIONS
    BS 6446(1997) : 1997 SPECIFICATION FOR MANUFACTURE OF GLUED STRUCTURAL COMPONENTS OF TIMBER AND WOOD BASED PANELS
    BS EN 14080 : 2013 TIMBER STRUCTURES - GLUED LAMINATED TIMBER AND GLUED SOLID TIMBER - REQUIREMENTS
    BS EN 1058 : 2009 WOOD-BASED PANELS - DETERMINATION OF CHARACTERISTIC 5-PERCENTILE VALUES AND CHARACTERISTIC MEAN VALUES
    BS EN 1995-1-1 : 2012 EUROCODE 5: DESIGN OF TIMBER STRUCTURES - PART 1-1: GENERAL - COMMON RULES AND RULES FOR BUILDINGS
    BS EN 324-2 : 1993 WOOD-BASED PANELS - DETERMINATION OF DIMENSIONS OF BOARDS - PART 2: DETERMINATION OF SQUARENESS AND EDGE STRAIGHTNESS
    BS EN 324-1 : 1993 WOOD-BASED PANELS - DETERMINATION OF DIMENSIONS OF BOARDS - PART 1: DETERMINATION OF THICKNESS, WIDTH AND LENGTH
    BS 4320(1968) : 1968 SPECIFICATION FOR METAL WASHERS FOR GENERAL ENGINEERING PURPOSES - METRIC SERIES
    BS EN 315 : 2000 PLYWOOD - TOLERANCES FOR DIMENSIONS
    BS 449-2(1969) : 1969 SPECIFICATION FOR THE USE OF STRUCTURAL STEEL IN BUILDING - PART 2: METRIC UNITS
    BS EN 336:2013 STRUCTURAL TIMBER - SIZES, PERMITTED DEVIATIONS
    BS 6100-8(2007) : 2007 BUILDING AND CIVIL ENGINEERING - VOCABULARY - PART 8: WORK WITH TIMBER AND WOOD-BASED PANELS
    BS 4978(2007) : 2007 VISUAL STRENGTH GRADING OF SOFTWOOD - SPECIFICATION
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