EN ISO 18674-2:2016

Geotechnical investigation and testing - Geotechnical monitoring by field instrumentation - Part 2: Measurement of displacements along a line: Extensometers (ISO 18674-2:2016)

ISO 18674-2:2016 specifies the measurement of displacements along a line by means of extensometers carried out for geotechnical monitoring. General rules of performance monitoring of the ground, of structures interacting with the ground, of geotechnical fills and of geotechnical works are presented in ISO 18674‑1.
If applied in conjunction with ISO 18674‑3, this document allows the determination of displacements acting in any direction.
ISO 18674-2:2016 is applicable to:
-      monitoring the behaviour of soils, fills and rocks;
-      checking geotechnical designs in connection with the Observational Design procedure;
-      deriving geotechnical key parameters (e.g. from results of pile load tests or trial tunnelling);
-      evaluating stability ahead of, during or after construction (e.g. stability of natural slopes, slope cuts, embankments, excavation walls, foundations, dams, refuse dumps, tunnels).
NOTE          This document fulfils the requirements for the performance monitoring of the ground, of structures interacting with the ground and of geotechnical works by the means of extensometers as part of the geotechnical investigation and testing in accordance with References [5] and [6].

Geotechnische Erkundung und Untersuchung - Geotechnische Messungen - Teil 2: Verschiebungsmessungen entlang einer Messlinie: Extensometer (ISO 18674-2:2016)

Dieser Teil der ISO 18674-2 gilt für geotechnische Verschiebungsmessungen entlang einer Messlinie mit Hilfe eines Extensometers. Die allgemeinen Regeln für die Qualitätsüberwachung des Baugrunds, der mit dem Baugrund interagierenden Strukturen, der geotechnischen Füllungen und geotechnischen Bauarbeiten sind in ISO 18674-1:2015 angegeben.
Wenn sie zusammen mit ISO 18674-3:2016 anzuwenden sind, erlaubt ISO 18674-2 die Bestimmung der in jede Richtung wirkenden Verschiebungen.
Diese Norm gilt für:
   Überwachung des Verhaltens von Böden, Schüttmaterial und Felsen
   die Prüfung geotechnischer Ausführungsvorschläge im Zusammenhang mit der Beobachtungsprozedur
   die Ableitung geotechnischer Schlüsselparameter (z. B. von Ergebnissen von Pfahlprobebelastungen oder Probestollen)
   die Beurteilung der Standsicherheit vor, während und nach dem Bau (z. B. Stabilität bei natürlichen Böschungen, Böschungseinschnitten, Aufschüttungen, Baugrubenwänden, Gründungen, Dämmen, Mülldeponien, Tunneln)
ANMERKUNG   Dieses Dokument erfüllt die Anforderungen für die Qualitätsüberwachung des Baugrunds, der mit dem Baugrund interagierenden Strkuturen und geotechnischen Bauarbeiten mit einem Extensometers als Teil der geotechnischen Untersuchung und Prüfung in Übereinstimmung mit den Verweisen [1] und [2].

Reconnaissance et essais géotechniques - Surveillance géotechnique par instrumentation in situ - Partie 2: Mesurages des déplacements le long d'une ligne: Extensomètres (ISO 18674-2:2016)

Le présent document s'applique à la mesure des déplacements le long d'une ligne à l'aide d'extensomètres utilisés à des fins de surveillance géotechnique. Les règles générales d'exécution de la surveillance du terrain, des structures interagissant avec le terrain et des travaux géotechniques sont présentées dans l'ISO 18674‑1.
Appliqué en même temps que l'ISO 18674‑3, le présent document permet la détermination des déplacements dans n'importe quelle direction.
Le présent document s'applique à:
—          la surveillance du comportement des sols, des remblais et des roches;
—          la vérification des valeurs de calcul géotechnique rattaché à la méthode d'étude observationnelle;
—          la déduction des valeurs de calcul géotechnique (p. ex.: essai de charge des pieux ou essai de percement de tunnel);
—          l'évaluation de la stabilité avant, pendant ou après la construction (p. ex.: talus naturels, talus de remblai, remblais, parois d'excavation, fondations, barrages, décharges ou tunnels).
NOTE       Le présent document répond aux exigences pour la surveillance du terrain, des structures interagissant avec le terrain et des travaux géotechniques aux moyens des extensomètres en tant qu'essai et reconnaissance géotechnique selon les Références [5] et [6].

Geotehnično preiskovanje in preskušanje - Geotehnične meritve - 2. del: Meritve pomikov vzdolž merilne linije: ekstenzometer (ISO 18674-2:2016)

Ta standard se uporablja za merjenje iztisnin vzdolž merilne linije z ekstenzometri za namene geotehničnih meritev. Standard je treba uporabljati v povezavi s standardom EN ISO 22474-1.  Ta standard se uporablja zlasti za:  – preiskovanje zemljin in kamnin;  – preverjanje vrednosti geotehničnega projektiranja v povezavi z metodo opazovalnega projektiranja; – izpeljavo vrednosti geotehničnega projektiranja (npr. obremenilni preskus pilotov, gradnja testnega predora);  – ocenjevanje stabilnosti pred, med ali po gradnji (npr. naravna pobočja, rezi pobočij, nasipi, stene izkopa, temelji, jezovi, odlagališča odpadkov, predori).

General Information

• Status: Published
• Publication Date: 22-Nov-2016
• Withdrawal Date: 30-May-2017
• ICS: 13.080.20 - Physical properties of soils
• ICS: 93.020 - Earthworks. Excavations. Foundation construction. Underground works
• Technical Committee: CEN/TC 341 - Geotechnical Investigation and Testing
• Drafting Committee: CEN/TC 341 - Geotechnical Investigation and Testing
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 23-Nov-2016
• Completion Date: 23-Nov-2016
• Ref Project: SIST EN ISO 18674-2:2017 - Geotechnical investigation and testing - Geotechnical monitoring by field instrumentation - Part 2: Measurement of displacements along a line: Extensometers (ISO 18674-2:2016)

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2017
*HRWHKQLþQRSUHLVNRYDQMHLQSUHVNXãDQMH*HRWHKQLþQHPHULWYHGHO0HULWYH
SRPLNRYY]GROåPHULOQHOLQLMHHNVWHQ]RPHWHU,62
Geotechnical investigation and testing - Geotechnical monitoring by field instrumentation
- Part 2: Measurement of displacements along a line: Extensometers (ISO 18674-
2:2016)
Geotechnische Erkundung und Untersuchung - Geotechnische Messungen - Teil 2:
Verschiebungsmessungen entlang einer Messlinie: Extensometer (ISO 18674-2:2016)
Reconnaissance et essais géotechniques - Mesures géotechniques - Partie 2: Mesure
de déplacement le long d‘une ligne par extensomètre (ISO 18674-2:2016)
Ta slovenski standard je istoveten z: EN ISO 18674-2:2016
ICS:
13.080.20 Fizikalne lastnosti tal Physical properties of soils
17.040.30 Merila Measuring instruments
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 18674-2
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2016
EUROPÄISCHE NORM
ICS 13.080.20; 93.020
English Version
Geotechnical investigation and testing - Geotechnical
monitoring by field instrumentation - Part 2: Measurement
of displacements along a line: Extensometers (ISO 18674-
2:2016)
Reconnaissance et essais géotechniques - Mesures Geotechnische Erkundung und Untersuchung -
géotechniques - Partie 2: Mesure de déplacement le Geotechnische Messungen - Teil 2:
long d'une ligne par extensomètre (ISO 18674-2:2016) Verschiebungsmessungen entlang einer Messlinie:
Extensometer (ISO 18674-2:2016)
This European Standard was approved by CEN on 11 September 2016.

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, 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
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18674-2:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
European foreword
This document (EN ISO 18674-2:2016) has been prepared by Technical Committee ISO/TC 182
“Geotechnics” in collaboration with Technical Committee CEN/TC 341 “Geotechnical Investigation and
Testing” the secretariat of which is held by BSI.
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 May 2017, and conflicting national standards shall be
withdrawn at the latest by May 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.
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, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 18674-2:2016 has been approved by CEN as EN ISO 18674-2:2016 without any
modification.
INTERNATIONAL ISO
STANDARD 18674-2
First edition
2016-10-15
Geotechnical investigation and
testing — Geotechnical monitoring by
field instrumentation —
Part 2:
Measurement of displacements along
a line: Extensometers
Reconnaissance et essais géotechniques — Mesures géotechniques —
Partie 2: Mesure de déplacement le long d‘une ligne par extensomètre
Reference number
ISO 18674-2:2016(E)
©
ISO 2016
ISO 18674-2:2016(E)
© ISO 2016, 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
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
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ii © ISO 2016 – All rights reserved

ISO 18674-2:2016(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 3
5 Instruments . 4
5.1 General . 4
5.2 In-place extensometer . 8
5.2.1 Measuring points . 8
5.2.2 Connecting elements . 8
5.2.3 Measuring head and read-out device . 9
5.3 Probe extensometer .10
5.3.1 Measuring points and guide tube .10
5.3.2 Probe .11
5.5 Tape extensometer (convergence tape) .12
5.6 Measuring range and accuracy .12
6 Installation and measuring procedures .13
6.1 Installation .13
6.1.1 Surface components . .13
6.1.2 Installation in boreholes and in fill .13
6.1.3 In-place extensometer .14
6.1.4 Probe extensometer .14
6.1.5 Tape extensometer .15
6.2 Carrying out the measurement .15
6.2.1 Instrumentation check and calibration .15
6.2.2 Measurement .15
7 Data processing and evaluation .15
8 Reporting .16
8.1 Installation report .16
8.2 Monitoring report .16
Annex A (normative) Measuring and evaluation procedure .17
Annex B (informative) Backfill materials .26
Annex C (informative) Geo-engineering applications .27
Annex D (informative) Measuring examples .28
Bibliography .46
ISO 18674-2:2016(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
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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 d
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