ISO 10318-1:2026

Overview

ISO 10318-1:2026 – Geosynthetics - Part 1: Vocabulary is the foundational international standard that establishes clear and harmonized terminology in the field of geosynthetics. Developed by ISO Technical Committee 221 in collaboration with CEN/TC 189, this standard defines key terms related to geosynthetic functions, products, and properties. By providing a unified vocabulary, ISO 10318-1:2026 supports consistent communication, documentation, and implementation across global geotechnical and civil engineering projects where geosynthetics are utilized.

Key Topics

This standard covers:

• Functions: Definitions for essential geosynthetic functions such as drainage, filtration, protection, reinforcement, separation, surface erosion control, barrier, stress relief, and stabilization.
• Product Types: Terminology for an extensive range of geosynthetic products, including geotextiles (nonwoven, woven, knitted), geogrids, geostrips, geospacers, geomats, geonets, geoblankets, geosynthetic barriers (polymeric, clay, bituminous), geomembranes, geocomposites, geosynthetic clay liners, geofoam, and other advanced products.
• Material Properties: Standardized terms for key geosynthetic properties:
  • Physical properties: thickness, mass per unit area
  • Hydraulic properties: characteristic opening size, permeability, flux, velocity index, permittivity, in-plane flow capacity, transmissivity, liquid tightness
  • Mechanical properties: tensile strength, tensile stress, tensile modulus, energy absorption, joint strength, and efficiency
  • Interface properties: friction angle, friction interaction coefficient
• Seaming and Installation: Definitions for seams, bonds, joint efficiency, machine direction, cross-machine direction, and relevant testing methods such as peel and tensile shear tests.
• Lifecycle Terms: Design life and service capabilities of geosynthetic products.

Applications

ISO 10318-1:2026 provides practical value for:

• Designers and Engineers: Facilitates accurate design, specification, and quality assurance for civil engineering, environmental, geotechnical, and infrastructure projects involving geosynthetics (e.g., roads, embankments, landfills, flood protection).
• Manufacturers and Suppliers: Enables consistent labeling, product certification, and comparison by standardizing product classifications and technical documentation.
• Laboratories and Test Facilities: Supports precise reporting and testing of geosynthetic products by using harmonized definitions for properties and measurements.
• Regulatory Bodies and Standards Organizations: Serves as the reference point for regulatory compliance and the development of additional geosynthetics standards.
• Contractors and Installers: Promotes understanding of requirements for installation, jointing, and site performance through clear terminology.

Related Standards

ISO 10318-1:2026 is part of a broader ISO 10318 series, which provides the core reference vocabulary for all international geosynthetics standards. Other related and supporting standards include:

• ISO 10318 series: Further parts focusing on additional aspects of geosynthetics (refer to the ISO website for the latest list).
• Testing standards: Standards for mechanical, hydraulic, and durability testing methods (e.g., ISO 9863-1 for thickness determination, ISO 11058 for water permeability).
• Product specifications: Standards addressing the requirements for specific types of geosynthetics and their use in different engineering applications.
• Design and installation guidance: Documents that provide recommended procedures and best practices for implementing geosynthetics in various projects.

By using ISO 10318-1:2026, professionals ensure consistency, reliability, and clarity in all activities involving geosynthetics, supporting the advancement and global harmonization of this vital technology in civil and environmental engineering.