prEN ISO 10318-2
(Main)Geosynthetics - Part 2: Symbols and pictograms (ISO/DIS 10318-2:2025)
Geosynthetics - Part 2: Symbols and pictograms (ISO/DIS 10318-2:2025)
The intent of ISO 10318-2:2015 is to define property symbols, graphical symbols, and pictograms used in EN and ISO geosynthetics standards. Definitions of particular or specific symbols and pictograms terms not included in this this part of ISO 10318 can be found in the International Standards describing appropriate test methods.
Geokunststoffe - Teil 2: Symbole und Piktogramme (ISO/DIS 10318‑2:2025)
Géosynthétiques - Partie 2: Symboles et pictogrammes (ISO/DIS 10318-2:2025)
L'objet de l'ISO 10318-2:2015 est de définir les symboles relatifs aux propriétés, les symboles graphiques et pictogrammes utilisée dans les normes géosynthétiques CEN et ISO. Les définitions de symboles spécifiques, pictogrammes et termes qui ne sont pas incluses dans l'ISO 10318-2:2015 peuvent être trouvés dans les normes qui décrivent les méthodes d'essai correspondantes de l'ISO.
Geosintetika - 2. del: Simboli in piktogrami (ISO/DIS 10318-2:2025)
General Information
- Status
- Not Published
- Publication Date
- 09-May-2027
- Technical Committee
- CEN/TC 189 - Geotextiles and geotextile-related products
- Current Stage
- 4020 - Submission to enquiry - Enquiry
- Start Date
- 16-Oct-2025
- Completion Date
- 16-Oct-2025
Relations
- Effective Date
- 08-Nov-2023
- Effective Date
- 08-Nov-2023
Overview
prEN ISO 10318-2 / ISO/DIS 10318-2:2025 - Geosynthetics - Part 2: Symbols and pictograms defines the standardised property symbols, graphical symbols, and pictograms used in EN and ISO geosynthetics standards. This draft revision (2025) updates the 2015 edition and is intended to ensure consistent labelling and communication across specifications, test reports, product data sheets and technical drawings for geosynthetic materials.
Key topics
The standard covers three main symbol categories and related technical terms:
- Property symbols (physical, hydraulic, mechanical)
- Physical examples: thickness (d, mm), width (b, m), length (l, m), mass per unit area (ρ, g/m2).
- Hydraulic examples: coefficient of permeability (k, m/s), permittivity (ψ = k/d), transmissivity (θ = k·d), velocity index (ν-index), in-plane flow capacity and flux normal to the plane (q), characteristic opening size (O90, µm).
- Mechanical examples: tensile stress at yield (σy), tensile strength at a specified strain (T at ε, e.g. T at 3 %), tensile modulus (J), maximum tensile stress/strength (σmax, Tmax), joint/seam strength and efficiency (T_Jmax, ξ), puncture and shear loads (Fp, Ps).
- Graphical symbols and pictograms
- Product symbols: GTX (geotextile), GBR (geosynthetic barrier), GGR (geogrid), GCO (geocomposite), GNT (geonet), GCE (geocell), GMA (geomat), GFO (geofoam), GCC (geosynthetic cementitious composite), GCT (geosynthetic container), GSP (geospacer), GST (geostrip), GCP (geocuspate), GBL (geoblanket).
- Function symbols: separation, barrier, filtration, drainage, reinforcement, surface erosion control, protection, stress relief (e.g., for asphalt interlayers), stabilization.
- Applications where pictograms help classify intended use: reservoirs and dams, canals, liquid and solid waste containment, transportation infrastructure (roads, railways), tunnels and underground structures, foundations and retaining walls, drainage systems, coastal erosion control, asphalt reinforcement, secondary containment and waterproofing.
Applications and users
This standard is practical for:
- Manufacturers and product data managers who need consistent product marking and datasheets.
- Test laboratories and certification bodies producing standardized test reports.
- Geotechnical and civil engineers, specifiers and contractors preparing technical specifications and drawings.
- Regulators and asset owners who reference symbols in contracts, procurement and compliance documents.
Related standards
- ISO 10318-1 (Geosynthetics - Vocabulary) - provides terminology referenced by symbols.
- Relevant test method standards (e.g., ISO 9863-1 for thickness) define specific property test methods and may include detailed definitions for some symbols.
Keywords: geosynthetics, ISO 10318-2, symbols and pictograms, geotextile symbols, hydraulic properties, mechanical properties, geogrid, geocomposite.
Frequently Asked Questions
prEN ISO 10318-2 is a draft published by the European Committee for Standardization (CEN). Its full title is "Geosynthetics - Part 2: Symbols and pictograms (ISO/DIS 10318-2:2025)". This standard covers: The intent of ISO 10318-2:2015 is to define property symbols, graphical symbols, and pictograms used in EN and ISO geosynthetics standards. Definitions of particular or specific symbols and pictograms terms not included in this this part of ISO 10318 can be found in the International Standards describing appropriate test methods.
The intent of ISO 10318-2:2015 is to define property symbols, graphical symbols, and pictograms used in EN and ISO geosynthetics standards. Definitions of particular or specific symbols and pictograms terms not included in this this part of ISO 10318 can be found in the International Standards describing appropriate test methods.
prEN ISO 10318-2 is classified under the following ICS (International Classification for Standards) categories: 01.080.99 - Other graphical symbols; 59.080.70 - Geotextiles. The ICS classification helps identify the subject area and facilitates finding related standards.
prEN ISO 10318-2 has the following relationships with other standards: It is inter standard links to EN ISO 10318-2:2015/A1:2018, EN ISO 10318-2:2015. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
prEN ISO 10318-2 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2025
Geosintetika - 2. del: Simboli in piktogrami (ISO/DIS 10318-2:2025)
Geosynthetics - Part 2: Symbols and pictograms (ISO/DIS 10318-2:2025)
Geokunststoffe - Teil 2: Symbole und Piktogramme (ISO/DIS 10318-2:2025)
Géosynthétiques - Partie 2: Symboles et pictogrammes (ISO/DIS 10318-2:2025)
Ta slovenski standard je istoveten z: prEN ISO 10318-2
ICS:
01.040.59 Tekstilna in usnjarska Textile and leather
tehnologija (Slovarji) technology (Vocabularies)
01.080.01 Grafični simboli na splošno Graphical symbols in general
59.080.70 Geotekstilije Geotextiles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
International
Standard
ISO/DIS 10318-2
ISO/TC 221
Geosynthetics —
Secretariat: BSI
Part 2:
Voting begins on:
Symbols and pictograms 2025-10-15
Voting terminates on:
Géosynthétiques —
2026-01-07
Partie 2: Symboles et pictogrammes
ICS: 01.080.99; 59.080.70
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 10318-2:2025(en)
DRAFT
ISO/DIS 10318-2:2025(en)
International
Standard
ISO/DIS 10318-2
ISO/TC 221
Geosynthetics —
Secretariat: BSI
Part 2:
Voting begins on:
Symbols and pictograms
Voting terminates on:
Géosynthétiques —
Partie 2: Symboles et pictogrammes
ICS: 01.080.99; 59.080.70
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 10318-2:2025(en)
ii
ISO/DIS 10318-2:2025(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Symbols . 1
2.1 Property symbols.1
2.1.1 Physical properties.1
2.1.2 Hydraulic properties of GTX and of GTP .1
2.1.3 Mechanical properties . .2
2.2 Graphical symbols and pictograms .3
2.2.1 Products .3
2.2.2 Functions .3
2.2.3 Applications .4
Bibliography . 7
iii
ISO/DIS 10318-2:2025(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Stand
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