SIST EN ISO 17892-6:2017

SLOVENSKI STANDARD
SIST EN ISO 17892-6:2017
01-september-2017
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SIST-TS CEN ISO/TS 17892-6:2004
SIST-TS CEN ISO/TS 17892-6:2004/AC:2010
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Geotechnical investigation and testing - Laboratory testing of soil - Part 6: Fall cone test
(ISO 17892-6:2017)
Geotechnische Erkundung und Untersuchung - Laborversuche an Bodenproben - Teil 6:
Fallkegelversuch (ISO 17892-6:2017)
Reconnaissance et essais géotechniques - Essais de laboratoire sur les sols - Partie 6:
Essai de pénétration de cône (ISO 17892-6:2017)
Ta slovenski standard je istoveten z: EN ISO 17892-6:2017
ICS:
13.080.20 Fizikalne lastnosti tal Physical properties of soils
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
SIST EN ISO 17892-6:2017 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 17892-6:2017

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SIST EN ISO 17892-6:2017


EN ISO 17892-6
EUROPEAN STANDARD

NORME EUROPÉENNE

March 2017
EUROPÄISCHE NORM
ICS 93.020; 13.080.20 Supersedes CEN ISO/TS 17892-6:2004
English Version

Geotechnical investigation and testing - Laboratory testing
of soil - Part 6: Fall cone test (ISO 17892-6:2017)
Reconnaissance et essais géotechniques - Essais de Geotechnische Erkundung und Untersuchung -
laboratoire sur les sols - Partie 6: Essai de pénétration Laborversuche an Bodenproben - Teil 6:
de cône (ISO 17892-6:2017) Fallkegelversuch (ISO 17892-6:2017)
This European Standard was approved by CEN on 3 February 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17892-6:2017 E
worldwide for CEN national Members.

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SIST EN ISO 17892-6:2017
EN ISO 17892-6:2017 (E)
Contents Page
European foreword . 3
2

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SIST EN ISO 17892-6:2017
EN ISO 17892-6:2017 (E)
European foreword
This document (EN ISO 17892-6:2017) has been prepared by Technical Committee
CEN/TC 341 “Geotechnical Investigation and Testing”, the secretariat of which is held by BSI, in
collaboration with Technical Committee ISO/TC 182 “Geotechnics”.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2017, and conflicting national standards
shall be withdrawn at the latest by September 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes CEN ISO/TS 17892-6:2004.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 17892-6:2017 has been approved by CEN as EN ISO 17892-6:2017 without any
modification.

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SIST EN ISO 17892-6:2017

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SIST EN ISO 17892-6:2017
INTERNATIONAL ISO
STANDARD 17892-6
First edition
2017-02
Geotechnical investigation and
testing — Laboratory testing of soil —
Part 6:
Fall cone test
Reconnaissance et essais géotechniques — Essais de laboratoire sur
les sols —
Partie 6: Essai de pénétration de cône
Reference number
ISO 17892-6:2017(E)
©
ISO 2017

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SIST EN ISO 17892-6:2017
ISO 17892-6:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved

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SIST EN ISO 17892-6:2017
ISO 17892-6:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Equipment . 2
5 Test procedure . 4
5.1 Test specimen preparation . 4
5.2 Test points . 5
5.3 Determination of fall cone penetration . 5
6 Test results . 7
6.1 Average penetration . 7
6.2 Estimated undrained fall cone shear strength . . 7
6.3 Additional estimate of undrained fall cone shear strength . 7
7 Test report . 7
7.1 Mandatory reporting . 7
7.2 Optional reporting . 8
Annex A (normative) Calibration, maintenance and checks . 9
Bibliography .11
© ISO 2017 – All rights reserved iii

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SIST EN ISO 17892-6:2017
ISO 17892-6:2017(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: w w w . i s o .org/ iso/ foreword .html.
ISO 17892-6 was prepared by the European Committee for Standardization (CEN) Technical Committee
CEN/TC 341, Geotechnical investigation and testing, in collaboration with ISO Technical Committee
ISO/TC 182, Geotechnics, in accordance with the agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
This first edition cancels and replaces ISO/TS 17892-6:2004, which has been technically revised. It also
incorporates the Technical Corrigendum ISO/TS 17892-6:2004/Cor 1:2006.
A list of all parts in the ISO 17892 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved

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SIST EN ISO 17892-6:2017
ISO 17892-6:2017(E)

Introduction
This document covers areas in the field of geotechnical engineering never previously standardized
internationally. It is intended that this document presents broad good practice throughout the world
and significant differences with national documents is not anticipated. It is based on international
practice (see Reference [1]).
© ISO 2017 – All rights reserved v

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SIST EN ISO 17892-6:2017

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SIST EN ISO 17892-6:2017
INTERNATIONAL STANDARD ISO 17892-6:2017(E)
Geotechnical investigation and testing — Laboratory
testing of soil —
Part 6:
Fall cone test
1 Scope
This document specifies a method of undrained strength index testing of both undisturbed and
remoulded specimens of fine grained soils by the fall cone method.
This document is applicable to the laboratory estimation of undrained shear strength of a soil test
specimen within the scope of geotechnical investigations.
In the fall cone test, a cone is allowed to fall with its tip towards a soil specimen, and the resulting
penetration of the cone into the soil is measured. The penetration values are used to estimate the
undrained shear strength. The fall cone test produces a complex shear in the test specimen, and does
not represent either a vertical triaxial compression or a horizontal shear test. However, this index test
may be correlated to some estimate of undrained shear strength determined in the laboratory by other
test methods.
As the test is performed on a small laboratory specimen, the result may not agree with laboratory tests
on larger specimens. In addition, the test specimen may not be fully representative of the soil in its
natural state in the field; for example, the test specimen may not have fissures present in situ at a larger
spacing than the specimen size.
Therefore, for the above reasons, the test can be regarded as an estimation of undrained shear strength,
rather than a true measurement of it.
The ratio of the remoulded shear strength to the undisturbed shear strength may be used to estimate
the sensitivity of a soil specimen. Time-dependent measurement of the shear strength may be used to
assess the thixotropic regain of strength of a remoulded soil specimen.
NOTE This document fulfils the requirements of the strength index testing of soils for geotechnical
investigation and testing in accordance with EN 1997–1 and EN 1997–2.
2 Normative references
The following documents are referred to in text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 14688-1, Geotechnical investigation and testing — Identification and classification of soil — Part 1:
Identification and description
ISO 17892-1, Geotechnical investigation and testing — Laboratory testing of soil — Part 1: Determination
of water content
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
© ISO 2017 – All rights reserved 1

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SIST EN ISO 17892-6:2017
ISO 17892-6:2017(E)

ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
3.1
fall cone undrained shear strength of undisturbed soil
c
ufc
undrained shear strength of an undisturbed fine grained soil specimen estimated by the fall cone method
3.2
fall cone undrained shear strength of remoulded soil
c
urfc
undrained shear strength of a remoulded fine grained soil specimen estimated by the fall cone method
4 Equipment
See Annex A for calibration requirements for the equipment in this clause.
4.1 Cone apparatus
The apparatus shall permit the cone to be held firmly initially and to be released instantaneously to fall
freely in the vertical direction into the soil specimen.
The apparatus shall have a mechanism which allows the cone to be raised or lowered and adjusted so
that the tip of the cone just touches the surface of the specimen before the cone is released.
The cone apparatus shall be equipped with a method of measuring the penetration across the range of
at least 4 mm to 20 mm penetration. Methods include a linear
...