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NS EN 1995-1-2 : 2004 + NA 2010

Current
Current

The latest, up-to-date edition.

EUROCODE 5: DESIGN OF TIMBER STRUCTURES - PART 1-2: GENERAL - STRUCTURAL FIRE DESIGN
Published date

12-01-2013

Foreword
Background of the Eurocode programme
Status and field of application of Eurocodes
National Standards implementing Eurocodes
Links between Eurocodes and harmonised technical specifications
(ENs and ETAs) for products
Additional information specific to EN 1995-1-2
National annex for EN 1995-1-2
Section 1 General
1.1 Scope
    1.1.1 Scope of Eurocode 5
    1.1.2 Scope of EN 1995-1-2
1.2 Normative references
1.3 Assumptions
1.4 Distinction between principles and application rules
1.5 Terms and definitions
1.6 Symbols
Section 2 Basis of design
2.1 Requirements
    2.1.1 Basic requirements
    2.1.2 Nominal fire exposure
    2.1.3 Parametric fire exposure
2.2 Actions
2.3 Design values of material properties and resistances
2.4 Verification methods
    2.4.1 General
    2.4.2 Member analysis
    2.4.3 Analysis of parts of the structure
    2.4.4 Global structural analysis
Section 3 Material properties
3.1 General
3.2 Mechanical properties
3.3 Thermal properties
3.4 Charring depth
    3.4.1 General
    3.4.2 Surfaces unprotected throughout the time of
          fire exposure
    3.4.3 Surfaces of beams and columns initially protected
          from fire exposure
          3.4.3.1 General
          3.4.3.2 Charring rates
          3.4.3.3 Start of charring
          3.4.3.4 Failure times of fire protective claddings
3.5 Adhesives
Section 4 Design procedures for mechanical resistance
4.1 General
4.2 Simplified rules for determining cross-sectional properties
    4.2.1 General
    4.2.2 Reduced cross-section method
    4.2.3 Reduced properties method
4.3 Simplified rules for analysis of structural members
    and components
    4.3.1 General
    4.3.2 Beams
    4.3.3 Columns
    4.3.4 Mechanically jointed members
    4.3.5 Bracings
4.4 Advanced calculation methods
Section 5 Design procedures for wall and floor assemblies
5.1 General
5.2 Analysis of load-bearing function
5.3 Analysis of separating function
Section 6 Connections
6.1 General
6.2 Connections with side members of wood
    6.2.1 Simplified rules
          6.2.1.1 Unprotected connections
          6.2.1.2 Protected connections
          6.2.1.3 Additional rules for connections with
                  internal steel plates
    6.2.2 Reduced load method
          6.2.2.1 Unprotected connections
          6.2.2.2 Protected connections
6.3 Connections with external steel plates
    6.3.1 Unprotected connections
    6.3.2 Protected connections
6.4 Simplified rules for axially loaded screws
Section 7 Detailing
7.1 Walls and floors
    7.1.1 Dimensions and spacings
    7.1.2 Detailing of panel connections
    7.1.3 Insulation
7.2 Other elements
Annex A (Informative) Parametric fire exposure
   A1 General
   A2 Charring rates and charring depths
   A3 Mechanical resistance of members in edgewise bending
Annex B (informative) Advanced calculation methods
   B1 General
   B2 Thermal properties
   B3 Mechanical properties
Annex C (Informative) Load-bearing floor joists and wall
        studs in assemblies whose cavities completely filled
        with insulation
   C1 General
   C2 Residual cross-section
      C2.1 Charring rates
      C2.2 Start of charring
      C2.3 Failure times of panels
   C3 Reduction of strength and stiffness parameters
Annex D (informative) Charring of members in wall and floor
        assemblies with void cavities
   D1 General
   D2 Charring rates
   D3 Start of charring
   D4 Failure times of panels
Annex E (informative) Analysis of the separating function of
        wall and floor assemblies
   E1 General
   E2 Simplified method for the analysis of insulation
      E2.1 General
      E2.2 Basic insulation values
      E2.3 Position coefficients
      E2.4 Effect of joints
Annex F (informative) Guidance for users of this Eurocode Part

Describes additional and varied rules to be used for the design of timber structures, which are required to avoid premature structural collapse and to limit the spread of fire in the accidental situation of exposure to fire.

DevelopmentNote
2004 Edition Re-Issued in March 2010 & incorporates NA 2010. Supersedes NS 3470-2. (04/2010)
DocumentType
Standard
PublisherName
Norwegian Standards (Norges Standardiseringsforbund)
Status
Current
Supersedes

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