EN ISO 22476-7:2012

Geotechnical investigation and testing - Field testing - Part 7: Borehole jack test (ISO 22476-7:2012)

ISO 22476-7:2012 specifies the equipment requirements, execution of and reporting on borehole jack tests.
It specifies the procedure for conducting a borehole jack test in ground stiff enough not to be adversely affected by the drilling operation. Two diametral cylindrical steel loading plates are placed in the ground and opened by pressure. Pressure applied to, and associated opening of, the probe are measured and recorded so as to obtain a stress-displacement relationship of the ground for the range of the expected design stress.
ISO 22476-7:2012 applies to test depths of  < 100 m and to testing either on land or off-shore.

Geotechnische Erkundung und Untersuchung - Felduntersuchungen - Teil 7: Seitendruckversuch (ISO 22476-7:2012)

Dieser Teil von ISO 22476 gilt für den Seitendruckversuch in Zusammenhang mit Felduntersuchungen als Teil der geotechnischen Erkundung und Untersuchung nach EN 1997-1 [1] und EN 1997-2 [2].
Dieser Teil von ISO 22476 legt das Verfahren zur Durchführung eines Seitendruckversuchs in einem Bau¬grund fest, der ausreichend steif ist, um durch den Bohrvorgang nicht beeinträchtigt zu werden. Zwei in den Baugrund eingebrachte zylindrische Druckplatten aus Stahl werden aufgespreizt. Der auf die Messsonde aufgebrachte Druck und deren dadurch bewirkte Ausdehnung werden gemessen und aufgezeichnet, um das Verhältnis zwischen Belastung und Aufweitung des Baugrunds im Bereich der erwarteten Bemessungs-belastungen zu ermitteln.
Dieser Teil von ISO 22476 gilt für Versuchstiefen von =< 100 m und für Versuche entweder auf Land oder auf See.

Reconnaissance et essais géotechniques - Essais en place - Partie 7: Essai au dilatomètre rigide diamétral (ISO 22476-7:2012)

L'ISO 22476-7:2012 traite des exigences relatives à l'appareillage, à l'exécution et au compte rendu des essais au dilatomètre rigide diamétral.
L'ISO 22476-7:2012 spécifie le mode opératoire permettant de réaliser un essai au dilatomètre rigide diamétral dans un terrain suffisamment ferme pour ne pas être affecté par l'opération de forage. Deux coquilles de chargement en acier cylindriques et diamétrales sont mises en place dans le terrain et déplacées par pression. La pression appliquée et le déplacement associé sont mesurés et enregistrés de manière à déterminer la relation contrainte-déplacement du terrain dans la plage des contraintes estimées dans le cadre de l'étude.
L'ISO 22476-7:2012 s'applique à des profondeurs d'essai inférieures ou égales à 100 m et aux essais en milieu terrestre ou aquatique.

Geotehnično preiskovanje in preskušanje - Preskušanje na terenu - 7. del: Preskus z bočnim tlakom v vrtini (ISO 22476-7:2012)

Ta del standarda ISO 22476 določa zahteve glede opreme, izvajanja preskusov z bočnim tlakom v vrtini ter poročanja v zvezi z njimi. OPOMBA Ta del standarda ISO 22476 izpolnjuje zahteve za preskuse z bočnim tlakom v vrtini v okviru geotehničnega preiskovanja in preskušanja v skladu s standardoma EN 1997-1 [1] in EN 1997-2 [2]. Ta del standarda ISO 22476 določa postopek za izvajanje preskusa z bočnim tlakom v vrtini v tleh, ki so dovolj trdna, da vrtanje nima negativnega vpliva. V tla se vstavita dve diametrični cilindrični jekleni nosilni plošči in razpreta z uporabo pritiska. Uporabljeni pritisk in povezano odprtje sonde se izmerita in zabeležita, da se pridobi odvisnost med napetostmi in deformacijami tal za razpon pričakovane projektne obremenitve. Ta del standarda ISO 22476 se uporablja za preskusne globine ≤ 100 m in preskušanje na kopnem ali na morju.

General Information

• Status: Published
• Publication Date: 30-Nov-2012
• Withdrawal Date: 29-Jun-2013
• ICS: 93.020 - Earthworks. Excavations. Foundation construction. Underground works
• Technical Committee: CEN/TC 341 - Geotechnical Investigation and Testing
• Drafting Committee: CEN/TC 341/WG 5 - Borehole expansion tests
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 01-Dec-2012
• Due Date: 17-Aug-2012
• Completion Date: 01-Dec-2012
• Ref Project: SIST EN ISO 22476-7:2013 - Geotechnical investigation and testing - Field testing - Part 7: Borehole jack test (ISO 22476-7:2012)

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2013
*HRWHKQLþQRSUHLVNRYDQMHLQSUHVNXãDQMH3UHVNXãDQMHQDWHUHQXGHO3UHVNXV
]ERþQLPWODNRPYYUWLQL,62
Geotechnical investigation and testing - Field testing - Part 7: Borehole jack test (ISO
22476-7:2012)
Geotechnische Erkundung und Untersuchung - Felduntersuchungen - Teil 7:
Seitendruckversuch (ISO 22476-7:2012)
Reconnaissance et essais géotechniques - Essais en place - Partie 7: Essai au
dilatomètre rigide diamétral (ISO 22476-7:2012)
Ta slovenski standard je istoveten z: EN ISO 22476-7:2012
ICS:
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.

EUROPEAN STANDARD
EN ISO 22476-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2012
ICS 93.020
English Version
Geotechnical investigation and testing - Field testing - Part 7:
Borehole jack test (ISO 22476-7:2012)
Reconnaissance et essais géotechniques - Essais en place Geotechnische Erkundung und Untersuchung -
- Partie 7: Essai au dilatomètre rigide diamétral (ISO Felduntersuchungen - Teil 7: Seitendruckversuch (ISO
22476-7:2012) 22476-7:2012)
This European Standard was approved by CEN on 25 November 2012.

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

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22476-7:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Foreword
This document (EN ISO 22476-7:2012) has been prepared by Technical Committee CEN/TC 341
“Geotechnical Investigation and Testing", the secretariat of which is held by ELOT, 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 June 2013, and conflicting national standards shall be withdrawn at
the latest by June 2013.
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 organisations 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.
INTERNATIONAL ISO
STANDARD 22476-7
First edition
2012-12-01
Geotechnical investigation and testing —
Field testing —
Part 7:
Borehole jack test
Reconnaissance et essais géotechniques — Essais en place —
Partie 7: Essai au dilatomètre rigide diamétral
Reference number
ISO 22476-7:2012(E)
©
ISO 2012
ISO 22476-7:2012(E)
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 [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved

ISO 22476-7:2012(E)
Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and symbols . 1
3.1 Terms and definitions . 1
3.2 Symbols and abbreviations . 3
4 Equipment . 4
5 Test procedure . 8
5.1 Calibration of the testing device . 8
5.2 Pocket drilling and device placing . 8
5.3 Loading programme . 8
5.4 Back-filling of borehole .10
5.5 Safety requirements .10
6 Test results .10
6.1 Basic equations .10
6.2 Loading tests . 11
6.3 Constant load test . 11
7 Reporting . 11
7.1 General . 11
7.2 Reporting of test results .12
7.3 Choice of axis scaling .13
7.4 Presentation of test results .13
Annex A (normative) Dimensions of borehole jacks and related device factors .14
Annex B (normative) Calibration and correction .15
Annex C (normative) Field report example .16
Annex D (informative) Test example .17
Annex E (normative) Placing the borehole jack in the ground .20
Annex F (normative) Resolutions and uncertainties .22
Bibliography .23
ISO 22476-7:2012(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.
ISO 22476-7 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 consists of the following parts, under the general title Geotechnical investigation and testing —
Field testing:
— Part 1: Electrical cone and piezocone penetration test
— Part 2: Dynamic probing
— Part 3: Standard penetration test
— Part 4: Ménard pressuremeter test
— Part 5: Flexible dilatometer test
— Part 7: Borehole jack test
— Part 9: Field vane test
— Part 10: Weight sounding test [Technical Specification]
— Part 11: Flat dilatometer test [Technical Specification]
— Part 12: Mechanical cone penetration test (CPTM)
iv © ISO 2012 – All rights reserved

ISO 22476-7:2012(E)
Introduction
The results of borehole jack tests are used for ground deformation calculations provided that the range of
stresses applied in the test are representative of the stresses caused by the proposed foundation. Local
experience normally improves the application of the results.
For identification and classification of the ground, the results of sampling (according to ISO 22475-1) from
each borehole are available for the evaluation of the tests. In addition, identification and classification results
(ISO 14688-1 and ISO 14689-1) are available from every separate ground layer within the desired investigation
depth (see EN 1997-2:2007, 2.4.1.4(2) P, 4.1(1) P and 4.2.3(2) P.)
INTERNATIONAL STANDARD ISO 22476-7:2012(E)
Geotechnical investigation and testing — Field testing —
Part 7:
Borehole jack test
1 Scope
This part of ISO 22476 specifies the equipment requirements, execution of and reporting on borehole jack tests.
NOTE This part of ISO 22476 fulfils the requirements for borehole jack tests as part of geotechnical investigation and
testing according to EN 1997-1 [1] and EN 1997-2 [2].
This part of ISO 22476 specifies the procedure for conducting a borehole jack test in ground stiff enough not
to be adversely affected by the drilling operation. Two diametral cylindrical steel loading plates are placed in
the ground and opened by pressure. Pressure applied to, and associated opening of the probe are measured
and recorded so as to obtain a stress-displacement relationship of the ground for t
...