I.S. ENV 1998-1-4:1996
Superseded
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EUROCODE 8: DESIGN PROVISIONS FOR EARTHQUAKE RESISTANCE OF STRUCTURES - PART 1-4: GENERAL RULES - STRENGTHENING AND REPAIR OF BUILDINGS
Hardcopy , PDF
14-08-2005
English
01-01-1996
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
Foreword
1 General
1.1 Scope
1.2 Distinction between principles and Application
Rules
1.3 Assumptions
1.4 Definitions
1.5 S.I. Units
1.6 Symbols
2 Information for structural assessment
2.1 General information and history
2.2 Minimum input data
3 Evaluation
3.1 General
3.2 Modified seismic action. Non seismic actions
3.3 Modified material strengths and partial safety
factors related to resistance
3.4 Structural data and combination of actions
3.4.1 Estimation of actual structural characteristics
of building elements before intervention
3.4.2 Combination of the seismic action
3.5 Analysis (prior to intervention)
3.5.1 General
3.5.2 General methods
3.5.3 Approximate static non-linear methods
3.6 Verification (final evaluation)
3.6.1 Computational verification
3.6.2 Vulnerability evaluation methods
4 Decisions for structural intervention
4.1 Post earthquake immediate measures
4.2 Criteria for a structural intervention
4.2.1 General criteria
4.2.2 Technical criteria
4.2.3 Type of intervention
4.2.4 Ductility considerations
4.2.5 Non-structural elements
4.2.6 Justifications of the selected intervention
type
4.3 Priority of interventions
5 Redesign of repair and/or strengthening
5.1 Redesign procedures
5.2 Revised gamma[m] factors
5.3 Basic data for forte transfer
5.3.1 Compression against pre cracked interfaces
5.3.2 Adhesion between non-metallic materials
5.3.3 Friction between non-metallic materials
5.3.4 Load transfer through resin layers
5.3.5 Clamping effect of steel across interface
5.3.6 Dowel action
5.3.7 Anchoring of new reinforcement
5.3.8 Welding of steel elements
5.3.9 Connections of timber-to-timber elements
5.4 Local and global ductility
5.4.1 General
5.4.2 Modified behaviour factors
5.5 Analysis (determination of action-effects) after
the Intervention
5.6 Post-Intervention stiffnesses and resistances
5.6.1 General
5.6.2 Analytical estimation of stiffness and
resistance
5.6.3 Simplified estimation of stiffness and
resistance
5.7 Verification
6 Quality assurance of interventions
6.1 Quality assurance as a performance criterion
6.2 Quality control of redesign documents
6.3 Quality control of execution
6.4 Maintenance
Annexes
Annex A (informative) Post earthquake measures
Annex B (informative) Information for structural
assessment
Annex C (informative) Conceptual bases for Design
Documents allowing for reduced a[g]-values
in assessment and redesign operations
Annex D (informative) Vulnerability methods
Annex E (informative) Quality assurance of interventions
Annex F (informative) Particular considerations for
historical buildings and monuments
Annex G (informative) Specific provisions for concrete
structure
Annex H (informative) Specific provisions for steel
structures
Annex J (informative) Specific provisions for timber
structures
Annex K (informative) Specific provisions for masonry
structures
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