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

This part of EN 1337 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.This part of EN 1337 applies to elastomeric bearings with dimensions in plan up to (1200 x 1200) mm and does not cover elastomeric bearings made with other elastomers materials than those specified in 4.4.1. It applies to laminated bearings types A, B, C, laminated sliding bearings types E and D, plain pad and strip bearings type F.This part deals with bearings for use in operating temperatures ranging from - 25 °C to + 50 °C and for short periods up to + 70 °C.It is recognised that the air temperature in some regions of Northern Europe is lower than -25 °C.In this case of very low operating temperature (down to - 40 °C), it is essential that bearing characteristics comply also with the shear modulus at very low temperature (see 4.3.1.3. and annex F)