Geotechnical investigation and testing - Field testing - Part 2: Dynamic probing - Amendment 1

Reconnaissance et essais géotechniques — Essais en place — Partie 2: Essais de pénétration dynamique — Amendement 1

General Information

Status
Published
Publication Date
08-Nov-2011
Technical Committee
ISO/TC 182 - Geotechnics
Drafting Committee
ISO/TC 182 - Geotechnics
Current Stage
6060 - International Standard published
Start Date
09-Nov-2011
Due Date
06-Sep-2013
Completion Date
06-Sep-2013

Relations

Effective Date
25-Dec-2021

Overview

ISO 22476-2:2005/Amd 1:2011 is an internationally recognized standard issued by the International Organization for Standardization (ISO) focusing on geotechnical investigation and testing. This amendment specifically addresses dynamic probing as a field testing method within geotechnical reconnaissance. The document revises the original 2005 edition by updating requirements related to equipment, execution procedures, and reporting of dynamic penetration tests.

Dynamic probing is critical in assessing soil characteristics by measuring penetration resistance during field testing, providing essential data for site investigations in civil engineering and construction projects. This amendment ensures harmonization with European standards such as EN 1997-1 and EN 1997-2, reinforcing reliability and safety in geotechnical practices.

Key Topics

  • Field Testing Requirements
    The amendment details mandatory requirements for apparatus design, operational procedures, and standardized reporting formats to guarantee consistent and accurate results in dynamic probing tests.

  • Equipment Specifications and Calibration
    It outlines methods for ensuring rod straightness, rod inclination limits (not exceeding 5% deviation from vertical), and procedures for evaluating energy losses in free-fall hammer systems used during dynamic penetration.

  • Injection Procedures
    For sites requiring injection (such as polluted grounds), the amendment mandates continuous injection during the entire driving operation, including rod withdrawal phases.

  • Data Recording and Interpretation
    Test results must be recorded as uncorrected blow counts (number of hammer strikes per penetration) with corrections applied during later analysis if necessary. The standard requires integration of soil sampling results to aid in soil identification and classification.

  • Quality Control and Safety Considerations
    The amendment specifies that testing must stop if rod inclination exceeds allowable thresholds, and includes detailed recommendations on procedural control to avoid data inaccuracies.

  • Harmonization With Other ISO Standards
    It cross-references ISO 22475-1 for sampling and piezometric measurement principles, and ISO 14688/14689 for soil and rock classification compliant with EN 1997 requirements.

Applications

ISO 22476-2:2005/Amd 1:2011 is highly applicable in the following geotechnical contexts:

  • Site Investigations for Civil Engineering Projects
    Dynamic probing provides accurate subsoil resistance data that inform foundation design, earthworks, and slope stability assessments.

  • Environmental and Contaminated Site Assessments
    The protocol for injection during dynamic probing ensures safe testing in contaminated sites, crucial for evaluating subsurface conditions without exacerbating pollution.

  • Infrastructure Development and Construction
    Rapid and reliable soil penetration resistance data support decision-making in roadworks, bridge foundations, and underground utilities installation.

  • Geotechnical Risk Assessment
    The standard improves the reliability of field testing data, which helps evaluate geological hazards and soil variability risks.

Related Standards

  • ISO 22475-1 – Geotechnical investigation and testing: Sampling methods and piezometric measurements
  • EN 1997-1 and EN 1997-2 – Eurocode standards for geotechnical design and site investigations
  • ISO 14688 (all parts) – Soil identification and classification
  • ISO 14689 (all parts) – Rock identification and classification

These complementary standards collectively bolster consistent, standardized practices in geotechnical investigation, ensuring safe, economical, and high-quality engineering outcomes.


Keywords: ISO 22476-2 amendment, dynamic probing standard, geotechnical field testing, soil penetration testing, geotechnical investigation, dynamic penetration resistance, soil classification, site investigation standard, EN 1997 compliance, geotechnical equipment calibration

Frequently Asked Questions

ISO 22476-2:2005/Amd 1:2011 is a standard published by the International Organization for Standardization (ISO). Its full title is "Geotechnical investigation and testing - Field testing - Part 2: Dynamic probing - Amendment 1". This standard covers: Geotechnical investigation and testing - Field testing - Part 2: Dynamic probing - Amendment 1

Geotechnical investigation and testing - Field testing - Part 2: Dynamic probing - Amendment 1

ISO 22476-2:2005/Amd 1:2011 is classified under the following ICS (International Classification for Standards) categories: 93.020 - Earthworks. Excavations. Foundation construction. Underground works. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 22476-2:2005/Amd 1:2011 has the following relationships with other standards: It is inter standard links to ISO 22476-2:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

ISO 22476-2:2005/Amd 1:2011 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)


INTERNATIONAL ISO
STANDARD 22476-2
First edition
2005-01-15
AMENDMENT 1
2011-11-15
Geotechnical investigation and testing —
Field testing —
Part 2:
Dynamic probing
AMENDMENT 1
Reconnaissance et essais géotechniques — Essais en place —
Partie 2: Essais de pénétration dynamique
AMENDEMENT 1
Reference number
ISO 22476-2:2005/Amd.1:2011(E)
©
ISO 2011
ISO 22476-2:2005/Amd.1:2011(E)

©  ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56  CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved

ISO 22476-2:2005/Amd.1:2011(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to ISO 22476-2:2005 was prepared by the European Committee for Standardization (CEN)
Technical Committee CEN/TC 341, Geotechnical Investigation and Testing, in collaboration with Technical
Committee ISO/TC 182, Geotechnics, Subcommittee SC 1, Geotechnical investigation and testing, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

ISO 22476-2:2005/Amd.1:2011(E)

Geotechnical investigation and testing — Field testing —
Part 2:
Dynamic probing
AMENDMENT 1
Page 1, Scope
Replace the first paragraph with the following:
This part of ISO 22476 deals with the equipment requirements for, execution of and reporting on
dynamic probing.
NOTE This part of ISO 22476 fulfils the requirements for dynamic probing as part of geotechnical
investigation and testing according to EN 1997-1 and EN 1997-2.
In the first sentence of the last paragraph, replace prEN ISO 22475-1 with ISO 22475-1.

Page 1, Normative references
Replace the second reference with the following:
ISO 22475-1, Geotechnical investigation and testing — Sampling methods and groundwater
measurements — Part 1: Technical principles for execution

Page 3, 4.3
Add the following paragraph after the first paragraph:
The optional injection hole should be placed a sufficient distance above the tip of the cone so that
the mud flushing does not influence the soil material at the tip.

Page 4, 4.3, Figure 1
Replace item 2 of the Key with the following:
2 Injection hole, e.g. of 5 mm diameter (optional)

Page 4, 4.4
In the third sentence of the first paragraph, replace “at the mid point” with “at any point”.

Page 5, 4.6.2
In the second sentence, replace “measure” with “measured”.
ISO 22476-2:2005/Amd.1:2011(E)
Page 5, 4.6.3
Before NOTE 1, add the following paragraph:
When conducting injections at contaminated sites, injections should always be carried o
...


NORME  ISO
INTERNATIONALE 22476-2
Première édition
2005-01-15
AMENDEMENT 1
2011-11-15
Reconnaissance et essais
géotechniques — Essais en place —
Partie 2:
Essais de pénétration dynamique
AMENDEMENT 1
Geotechnical investigation and testing — Field testing —
Part 2: Dynamic probing
AMENDMENT 1
Numéro de référence
ISO 22476-2:2005/Amd.1:2011(F)
©
ISO 2011
ISO 22476-2:2005/Amd.1:2011(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
©  ISO 2011
Droits de reproduction réservés. Sauf prescription différente, aucune partie de cette publication ne peut être reproduite ni utilisée sous
quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l’accord écrit
de l’ISO à l’adresse ci-après ou du comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Publié en Suisse
ii © ISO 2011 – Tous droits réservés

ISO 22476-2:2005/Amd.1:2011(F)
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes nationaux de
normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est en général confiée aux
comités techniques de l’ISO. Chaque comité membre intéressé par une étude a le droit de faire partie du comité
technique créé à cet effet. Les organisations internationales, gouvernementales et non gouvernementales,
en liaison avec l’ISO participent également aux travaux. L’ISO collabore étroitement avec la Commission
électrotechnique internationale (CEI) en ce qui concerne la normalisation électrotechnique.
Les Normes internationales sont rédigées conformément aux règles données dans les Directives ISO/CEI,
Partie 2.
La tâche principale des comités techniques est d’élaborer les Normes internationales. Les projets de Normes
internationales adoptés par les comités techniques sont soumis aux comités membres pour vote. Leur
publication comme Normes internationales requiert l’approbation de 75 % au moins des comités membres
votants.
L’attention est appelée sur le fait que certains des éléments du présent document peuvent faire l’objet de droits
de propriété intellectuelle ou de droits analogues. L’ISO ne saurait être tenue pour responsable de ne pas avoir
identifié de tels droits de propriété et averti de leur existence.
L’Amendement 1 à l’ISO 22476-2:2005 a été élaboré par le comité technique CEN/TC 341, Enquête géotechnique
et test, en collaboration avec le comité technique ISO/TC 182, Géotechnique, sous-comité SC 1, Recherches
et essais géotechniques, conformément à l’Accord de coopération technique entre l’ISO et le CEN (Accord de
Vienne).
© ISO 2011 – Tous droits réservés  iii

ISO 22476-2:2005/Amd.1:2011(F)
Reconnaissance et essais géotechniques — Essais en place —
Partie 2:
Essais de pénétration dynamique
AMENDEMENT 1
Page 1, Domaine d’application
Remplacer le premier alinéa par le texte suivant:
«La présente partie de l’ISO 22476 traite des exigences en matière d’appareillage, de l’exécution et de
l’établissement des rapports d’essais de pénétration dynamique.
NOTE  La présente partie de l’ISO 22476 répond aux exigences applicables aux essais de pénétration dynamique
effectués dans le cadre des reconnaissances géotechniques selon l’EN 1997-1 et l’EN 1997-2.»
Dans la première phrase du dernier alinéa, remplacer «prEN ISO 22475-1» par «l’ISO 22475-1».
Page 1, Références normatives
Remplacer la deuxième référence par la référence suivante:
ISO 22475-1,  Reconnaissance et essais géotechniques — Méthodes de prélèvement et mesurages
piézométriques — Partie 1: Principes techniques des travaux
Page 4, 4.3
Après l’alinéa actuel, ajouter l’alinéa suivant:
«Il convient de positionner l’orifice d’injection facultatif suffisamment haut au-dessus de l’extrémité de la
pointe pour que la boue d’injection n’ait pas d’incidence sur le sol situé au niveau de la pointe.»
Page 4, 4.3, Figure 1
Dans la légende, remplacer «2    orifice d’injection (éventuellement)» par:
«2    orifice d’injection, par exemple de 5 mm de diamètre (facultatif)»
Page 5, 4.4
Dans la quatrième phrase du premier alinéa, remplacer «au milieu» par «en tout point».
Page 5, 4.6.2
Ne s’applique pas à la version française.
© ISO 2011 – Tous droits réservés  1

ISO 22476-2:2005/Amd.1:2011(F)
Page 5, 4.6.3
Ajouter l’alinéa suivant avant «NOTE 1»:
«Lorsque des injections sont réalisées sur des sites pollués, il convient de toujours poursuivre les injections
pendant toute la durée de battage, y compris pendant la remontée des tiges de battage.»
Page 7, 4.6.5, Tableau 1
a
Dans la ligne 3, colonne 7, remplacer «50 < d < 0
...

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