SN EN 1998-3 : 2005

FOREWORD
1 GENERAL
  1.1 SCOPE
  1.2 NORMATIVE REFERENCES
      1.2.1 General reference standards
  1.3 ASSUMPTIONS
  1.4 DISTINCTION BETWEEN PRINCIPLES AND APPLICATION
      RULES
  1.5 DEFINITIONS
  1.6 SYMBOLS
      1.6.1 General
      1.6.2 Symbols used in Annex A
      1.6.3 Symbols used in Annex B
  1.7 S.I. UNITS
2 PERFORMANCE REQUIREMENTS AND COMPLIANCE CRITERIA
  2.1 FUNDAMENTAL REQUIREMENTS
  2.2 COMPLIANCE CRITERIA
      2.2.1 General
      2.2.2 Limit State of Near Collapse (NC)
      2.2.3 Limit State of Significant Damage (SD)
      2.2.4 Limit State of Damage Limitation (DL)
3 INFORMATION FOR STRUCTURAL ASSESSMENT
  3.1 GENERAL INFORMATION AND HISTORY
  3.2 REQUIRED INPUT DATA
  3.3 KNOWLEDGE LEVELS
      3.3.1 Definition of knowledge levels
      3.3.2 KL1: Limited knowledge
      3.3.3 KL2: Normal knowledge
      3.3.4 KL3: Full knowledge
  3.4 IDENTIFICATION OF THE KNOWLEDGE LEVEL
      3.4.1 Geometry
      3.4.2 Details
      3.4.3 Materials
      3.4.4 Definition of the levels of inspection
            and testing
  3.5 CONFIDENCE FACTORS
4 ASSESSMENT
  4.1 GENERAL
  4.2 SEISMIC ACTION AND SEISMIC LOAD COMBINATION
  4.3 STRUCTURAL MODELLING
  4.4 METHODS OF ANALYSIS
      4.4.1 General
      4.4.2 Lateral force analysis
      4.4.3 Multi-modal response spectrum analysis
      4.4.4 Nonlinear static analysis
      4.4.5 Non-linear time-history analysis
      4.4.6 q-factor approach
      4.4.7 Combination of the components of the seismic
            action
      4.4.8 Additional measures for masonry infilled
            structures
      4.4.9 Combination coefficients for variable actions
      4.4.10 Importance classes and importance factors
  4.5 SAFETY VERIFICATIONS
      4.5.1 Linear methods of analysis (lateral force or
            modal response spectrum analysis)
      4.5.2 Nonlinear methods of analysis (static or
            dynamic)
      4.5.3 q-factor approach
  4.6 SUMMARY OF CRITERIA FOR ANALYSIS AND SAFETY
      VERIFICATIONS
5 DECISIONS FOR STRUCTURAL INTERVENTION
  5.1 CRITERIA FOR A STRUCTURAL INTERVENTION
      5.1.1 Introduction
      5.1.2 Technical criteria
      5.1.3 Type of intervention
      5.1.4 Non-structural elements
      5.1.5 Justification of the selected intervention
            type
6 DESIGN OF STRUCTURAL INTERVENTION
  6.1 RETROFIT DESIGN PROCEDURE
ANNEX A (INFORMATIVE) REINFORCED CONCRETE STRUCTURES
ANNEX B (INFORMATIVE) STEEL AND COMPOSITE STRUCTURES
ANNEX C (INFORMATIVE) MASONRY BUILDINGS

Provides criteria for the evaluation of the seismic performance of existing individual building structures. Also describe the approach in selecting necessary corrective measures.