EN ISO 19901-4:2003

Petroleum and natural gas industries - Specific requirements for offshore structures - Part 4: Geotechnical and foundation design considerations (ISO 19901-4:2003)

ISO 19901-4:2003 contains requirements and recommendations for those aspects of geoscience and foundation engineering that are applicable to a broad range of offshore structures, rather than to a particular structure type. Such aspects are site characterization, soil and rock characterization, and design and installation of foundations supported by the seabed (shallow foundations) and the identification of hazards.
Aspects of soil mechanics and foundation engineering that apply equally to offshore and onshore structures are not addressed. The user of this part of ISO 19901-4:2003 is expected to be familiar with such aspects.

Erdöl- und Erdgasindustrie - Offshore-Plattformen - Teil 4: Geotechnische und Fundament-Auslegungsmerkmale (ISO 19901-4:2003)

Industries du pétrole et du gaz naturel - Exigences spécifiques relatives aux structures en mer - Partie 4: Bases conceptuelles des fondations (ISO 19901-4:2003)

L'ISO 19901-4:2003 contient les exigences et les recommandations relatives aux aspects géotechniques et de dimensionnement des fondations qui s'appliquent à une vaste gamme de structures en mer, plutôt qu'à un type particulier de structure. Ces aspects sont la caractérisation du site, la caractérisation des sols et des roches, le dimensionnement et installation des fondations supportées par le lit océanique (fondations superficielles), et l'identification des risques.
Les aspects de mécanique des sols et de dimensionnement des fondations qui s'appliquent aussi bien aux structures en mer qu'aux structures terrestres ne sont pas couverts. L'utilisateur de l'ISO 19901-4:2003 est considéré comme familier de ces aspects.

Petroleum and natural gas industries - Specific requirements for offshore structures - Part 4: Geotechnical and foundation design considerations (ISO 19901-4:2003)

General Information

• Status: Withdrawn
• Publication Date: 31-Jul-2003
• Withdrawal Date: 09-Aug-2016
• ICS: 13.080.99 - Other standards related to soil quality
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• Technical Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Drafting Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 10-Aug-2016
• Ref Project: SIST EN ISO 19901-4:2004 - Petroleum and natural gas industries - Specific requirements for offshore structures - Part 4: Geotechnical and foundation design considerations (ISO 19901-4:2003)

Relations

• Replaced By: EN ISO 19901-4:2016 - Petroleum and natural gas industries - Specific requirements for offshore structures - Part 4: Geotechnical and foundation design considerations (ISO 19901-4:2016)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2004
Petroleum and natural gas industries - Specific requirements for offshore
structures - Part 4: Geotechnical and foundation design considerations (ISO 19901
-4:2003)
Petroleum and natural gas industries - Specific requirements for offshore structures -
Part 4: Geotechnical and foundation design considerations (ISO 19901-4:2003)
Erdöl- und Erdgasindustrie - Offshore-Plattformen - Teil 4: Geotechnische und
Fundament-Auslegungsmerkmale (ISO 19901-4:2003)
Industries du pétrole et du gaz naturel - Exigences spécifiques relatives aux structures
en mer - Partie 4: Bases conceptuelles des fondations (ISO 19901-4:2003)
Ta slovenski standard je istoveten z: EN ISO 19901-4:2003
ICS:
75.180.10 Oprema za raziskovanje in Exploratory and extraction
odkopavanje equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 19901-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2003
ICS 75.180.10
English version
Petroleum and natural gas industries - Specific requirements for
offshore structures - Part 4: Geotechnical and foundation design
considerations (ISO 19901-4:2003)
Industries du pétrole et du gaz naturel - Exigences Erdöl- und Erdgasindustrie - Offshore-Plattformen - Teil 4:
spécifiques relatives aux structures en mer - Partie 4: Geotechnische und Fundament-Auslegungsmerkmale (ISO
Bases conceptuelles des fondations (ISO 19901-4:2003) 19901-4:2003)
This European Standard was approved by CEN on 10 July 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19901-4:2003 E
worldwide for CEN national Members.

Foreword
This document (EN ISO 19901-4:2003) has been prepared by Technical Committee ISO/TC 67
"Materials, equipment and offshore structures for petroleum and natural gas industries" in
collaboration with Technical Committee CEN/TC 12 "Materials, equipment and offshore
structures for petroleum and natural gas industries", the secretariat of which is held by AFNOR.
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 February 2004, and conflicting national
standards shall be withdrawn at the latest by February 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, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
NOTE FROM CMC  The foreword is susceptible to be amended on reception of the German
language version. The confirmed or amended foreword, and when appropriate, the normative
annex ZA for the references to international publications with their relevant European
publications will be circulated with the German version.
Endorsement notice
The text of ISO 19901-4:2003 has been approved by CEN as EN ISO 19901-4:2003 without any
modifications.
INTERNATIONAL ISO
STANDARD 19901-4
First edition
2003-08-01
Petroleum and natural gas industries —
Specific requirements for offshore
structures —
Part 4:
Geotechnical and foundation design
considerations
Industries du pétrole et du gaz naturel — Exigences spécifiques
relatives aux structures en mer —
Partie 4: Bases conceptuelles des fondations

Reference number
ISO 19901-4:2003(E)
©
ISO 2003
ISO 19901-4:2003(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

©  ISO 2003
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 2003 — All rights reserved

ISO 19901-4:2003(E)
Contents Page
Foreword. v
Introduction . vii
1 Scope. 1
2 Normative references. 1
3 Terms and definitions. 2
4 Symbols. 3
5 General requirements. 4
5.1 General. 4
5.2 Testing and instrumentation. 4
5.3 Conductor installation and shallow well drilling . 5
6 Geotechnical data acquisition and integrated geoscience studies. 5
6.1 Geotechnical assessment. 5
6.2 Shallow geophysical investigation . 5
6.3 Geological modelling and identification of hazards.6
6.4 Geotechnical investigation. 8
7 Stability of shallow foundations. 9
7.1 General. 9
7.2 Principles. 10
7.3 Acceptance criteria. 10
7.4 Undrained bearing capacity — constant shear strength. 12
7.5 Undrained bearing capacity — linearly increasing shear strength . 13
7.6 Drained bearing capacity . 13
7.7 Shear strength used in bearing capacity calculations. 14
7.8 Settlements and displacements . 14
7.9 Dynamic behaviour. 14
7.10 Hydraulic stability. 15
7.11 Installation and removal. 15
7.12 Shallow foundations equipped with skirts. 15
7.13 Shallow foundations without skirts . 15
7.14 Installation effects. 16
Annex A (informative) Additional information and guidance. 17
A.1 Scope. 17
A.2 Normative references. 17
A.3 Terms and definitions. 17
A.4 Symboles. 17
A.5 General requirements. 17
A.6 Geotechnical data acquisition and integrated geoscience studies. 18
A.6.1 Geotechnical assessment. 18
A.6.2 Shallow geophysical investigation . 18
A.6.3 Geological modelling and identification of hazards.18
A.6.4 Geotechnical investigation. 18
A.7 Stability of shallow foundations. 20
A.7.1 General. 20
A.7.2 Principles. 20
A.7.3 Acceptance criteria. 22
A.7.4 Undrained bearing capacity — constant shear strength. 22
A.7.5 Undrained bearing capacity — linearly increasing shear strength . 23
A.7.6 Drained bearing capacity . 25
ISO 19901-4:2003(E)
A.7.7 Shear strength used in bearing capacity calculations.26
A.7.8 Settlements and displacements.26
A.7.9 Dynamic behaviour.26
A.7.10 Hydraulic stability.26
A.7.11 Installation and removal.26
A.7.12 Shallow foundations equipped with skirts .26
A.7.13 Shallow foundations without skirts.27
A.7.14 Installation effects.
...