NBN EN 1337-3 : 2005

Foreword
1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviations
  3.1 Terms and definitions
  3.2 Symbols
      3.2.1 Latin upper case letters
      3.2.2 Latin lower case letters
      3.2.3 Greek letters
      3.2.4 Subscripts
  3.3 Abbreviations
4 Requirements
  4.1 General
  4.2 Functional requirements
  4.3 Performance requirements for complete bearings
      4.3.1 Shear modulus
      4.3.2 Shear bond strength
      4.3.3 Compression stiffness
      4.3.4 Resistance to repeated loading in compression
      4.3.5 Static rotation capability
      4.3.6 Ozone resistance
      4.3.7 PTFE/elastomer shear bond strength
  4.4 Material properties
      4.4.1 General
      4.4.2 Physical and mechanical properties of elastomer
      4.4.3 Steel reinforcing plates
      4.4.4 Sliding surfaces
5 Design rules
  5.1 General
  5.2 Design values of actions
  5.3 Laminated bearings
      5.3.1 Types of laminated bearings
      5.3.2 Sizes and shapes of laminated bearings
      5.3.3 Basis of design
  5.4 Plain pad bearings
  5.5 Strip bearings
      5.5.1 Geometry
      5.5.2 Loads
      5.5.3 Shear strain
      5.5.4 Stability criteria
      5.5.5 Deformations and maximum forces exerted on the
            structure
  5.6 Sliding elastomeric bearings
6 Manufacturing tolerances
  6.1 Plan size
  6.2 Thickness of elastomer layers
      6.2.1 Internal layer
      6.2.2 External layer on top and bottom surfaces for
            laminated bearings
      6.2.3 Tolerances of total thickness of bearing system
      6.2.4 Edge cover thickness for laminated bearings
  6.3 Reinforcing steel plate for laminated bearings
7 Special requirements
  7.1 Plinth of the structure - Tolerances of the contact
      area with the structure
      7.1.1 General
      7.1.2 Surface conditions
      7.1.3 Surface flatness
      7.1.4 Surface level
  7.2 Positive means of location
  7.3 Marking and labelling
8 Conformity evaluation
  8.1 General
  8.2 Control of the construction product and its manufacture
      8.2.1 General
      8.2.2 Initial type tests
      8.2.3 Routine testing
      8.2.4 Control of raw materials
      8.2.5 Audit-testing
  8.3 Sampling
      8.3.1 Samples for audit testing
  8.4 Non-compliance with the technical specification
9 Criteria for in-service inspection
Annex A (normative) Elliptical bearings
Annex B (normative) Rotational limitation factor
Annex C (normative) Maximum design strain in laminated bearings
Annex D (informative) Shear modulus comments
Annex E (informative) Typical bearing schedule
Annex F (normative) Shear modulus test method
Annex G (normative) Shear bond test method
Annex H (normative) Compression test method
Annex I (normative) Repeated Loading Compression Test Method
Annex J (normative) Eccentric loading test method
Annex K (normative) Restoring Moment Test Method
Annex L (normative) Resistance to ozone test method
Annex M (normative) Shear bond test method for PTFE/elastomer
                    interface
Annex N (normative) Factory production control
Annex ZA (informative) Clauses of this European Standard
                       addressing the provisions of the EU
                       Construction Products Directive
Bibliography

Applies to elastomeric bearings with or without complementary bearing devices to extend their field of use such as flat sliding elements covered by EN 1337-2 or sliding surface described in 4.4.4, as used in bridge structures or any other structure with comparable support conditions.