ISO 10319 is an ISO index test method for measuring tensile properties of geosynthetics using a wide-width strip specimen. It is commonly used to characterize strength and elongation behavior for geotextiles, geogrids, geocomposites, and other geosynthetic products.
Test setups and reporting expectations can vary by product type (especially open-structure materials) and by whether results are required for conditioned and/or wet specimens. If you need help aligning your product, fixtures, and reporting needs to a cited edition, talk with our team.
ISO 10319:2024 — Geosynthetics — Wide-width tensile test
ISO 10319 is a tensile testing standard focused on wide-width strip testing of geosynthetics. It is used for generating comparable tensile-force and elongation/strain data for product qualification, quality control, and technical datasheets.
The current edition listed by ISO is ISO 10319:2024 (Edition 4), which replaced ISO 10319:2015.
Quick Definition
Document type: Tensile test method (index test method).
What it measures: Tensile force versus extension/strain behavior from a wide-width strip specimen, including maximum force per unit width and strain at maximum force (and commonly reported stiffness values derived from the curve).
Where it’s used: Geosynthetics manufacturing QC, product qualification, and comparative testing across lots, suppliers, or constructions.
What This Standard Covers
ISO 10319 specifies a wide-width tensile test approach for geosynthetics made from polymeric, glass, and metallic materials. The method is intended to be broadly applicable across many geosynthetic forms, while recognizing that some open structures (such as geogrids and similar products) may require adjustments to specimen dimensions.
The method addresses tensile testing using a wide-width strip held across its width in appropriate clamps/jaws, with measurement of tensile force and elongation characteristics. It also includes procedures intended to support calculation and reporting of curve-based properties such as maximum load per unit width and strain at maximum force.
Why This Standard Matters in Testing
Wide-width strip tensile testing is widely specified for geosynthetics because it helps produce more representative tensile behavior for sheet-like and textile-like products than narrow-strip approaches, especially where structure and deformation can influence measured results.
For buyers and QA/QC teams, ISO 10319 results are often used to support incoming inspection, certificate of analysis checks, and comparison of tensile performance between production runs or sources using a consistent method.
Common Materials, Product Types, or Applications Covered
ISO 10319 is used across many geosynthetic products where tensile performance is a key declared property.
Common product types: Woven and nonwoven geotextiles, knitted geotextiles, geocomposites, geonets, geomats, and metallic geosynthetic products.
Common special cases: Geogrids and similar open-structure geotextiles can be evaluated, but specimen geometry may need adjustment to suit the structure.
Typical application areas: Civil and environmental works where geosynthetics are used for separation, filtration, drainage, reinforcement, and protection, and where tensile behavior is specified for design or quality requirements.
Common Test or Verification Workflow
ISO 10319 is typically run as part of an index-property testing workflow for geosynthetics, either in a manufacturer’s lab or an independent test lab.
Common workflows: Select representative specimens from a lot, condition specimens as required, run wide-width tensile tests in the principal material directions when applicable, and report force–extension behavior and specified derived values (such as maximum force per unit width and strain at maximum force).
Conditioning considerations: The standard includes procedures intended to support testing of conditioned specimens and wet specimens, so the lab workflow often includes specimen conditioning controls and wetting/handling steps that must be coordinated with the test schedule.
Equipment Commonly Used for This Standard
ISO 10319 is performed on a tensile test system configured for wide-width strip specimens and the force range typical of geosynthetics. Equipment selection is driven by specimen width, expected force levels, gripping approach, and how extension/strain is measured and reported.
Common equipment: A universal testing machine (UTM) or tensile tester with suitable load capacity and control; wide-width grips/clamps designed to hold the specimen across its width with minimal slippage and damage; and instrumentation/software to record force versus extension and compute required reported values.
Common accessories: Extension/strain measurement options appropriate to the product and required outputs (for example, crosshead-based extension and/or dedicated strain measurement approaches), plus fixtures and lab tools to support specimen preparation and (when required) wet specimen handling.
Practical quoting cautions: Open-structure products and higher-strength reinforcements can drive grip style and machine capacity. The cited edition and the product form should be confirmed before finalizing grip geometry, jaw face materials, and measurement approach.
How to Read This Designation or Revision
ISO standards are commonly cited with a year that identifies the edition, for example “ISO 10319:2024.” When contracts, specifications, or test reports reference ISO 10319, the edition matters because updates can affect test conditions, calculation/reporting expectations, and applicability notes for specific product types.
Revision sensitivity: If a customer specification calls out ISO 10319:2015 or another earlier edition, confirm whether they require that exact edition or will accept ISO 10319:2024 before setting up test plans and report templates.
Related Standards, Methods, or Frameworks
ISO 10319 is one of several tensile characterization approaches used for geosynthetics. Depending on the product type and market, projects may also reference alternative tensile methods (including non-ISO methods) that use different specimen geometries or gripping approaches.
When multiple methods are referenced across a program, it is important to avoid mixing results from different tensile standards unless the specification explicitly allows it, since geometry and clamping differences can influence measured performance.
Get help selecting a wide-width tensile test setup
If you are equipping a lab to run ISO 10319 and need to match machine capacity, grip style, and measurement options to your geosynthetic product range, you can request a detailed quote for a configuration aligned with your workflow.