ISO 22762-1:2024

Overview

ISO 22762-1:2024 - Elastomeric seismic-protection isolators - Part 1: Test methods is the international standard that defines laboratory test methods for characterizing the rubber materials and complete elastomeric isolators used to protect buildings and bridges from earthquake damage. Published as the fourth edition in 2024, this document covers procedures to determine material properties, stiffness, damping, durability and ultimate performance of laminated elastomeric isolators (alternating elastomeric layers and steel reinforcement plates) placed between superstructure and substructure.

Key topics and technical requirements

The standard specifies a comprehensive suite of tests and corrections to quantify isolator behavior and material integrity, including:

• Rubber material tests

  • Tensile properties, hardness, compression set, adhesion
  • Ageing and accelerated ageing procedures for inner and cover rubber
  • Dynamic shear properties, breaking properties, brittleness point
  • Ozone resistance and low-temperature crystallization

• Elastomeric isolator tests

  • Compression and shear stiffness tests (including compressive–shear interaction)
  • Dependence tests covering strain, compressive force, frequency, repeated deformation, and temperature
  • Ultimate shear and tensile testing procedures
  • Durability tests: degradation, creep and fatigue assessments
  • Measurement of reaction force under low-rate deformation

• Normative corrections and annexes

  • Inertia and friction force corrections, coefficient of linear thermal expansion
  • Informative annexes with alternative shear methods, creep methods, and long-term durability case studies for bridges and buildings

The document defines required test conditions, specimen types, test machines, result expression and reporting requirements to ensure repeatable, comparable data.

Applications and who uses this standard

ISO 22762-1:2024 is used wherever reliable seismic-isolator testing and quality assurance are required:

• Structural and seismic engineers evaluating isolation systems for building and bridge design
• Manufacturers of elastomeric isolators for product development, type approval and factory quality control
• Independent testing laboratories conducting material and component qualification
• Specifiers, asset owners and procurement teams requiring objective performance verification
• Regulators and standards committees integrating test methods into national codes or conformity schemes

Practical benefits include consistent verification of isolator stiffness and damping, reliable durability assessments for lifecycle planning, and standardized test reports for procurement and certification.

Related standards

• ISO 22762 series (other parts such as test methods, design and application parts referenced in the standard)
• National seismic design codes and procurement specifications that reference ISO test methods

Keywords: ISO 22762-1:2024, elastomeric seismic-protection isolators, test methods, seismic isolation, rubber material tests, compression shear stiffness, durability testing, bridges, buildings.