Earthworks - Part 6: Land reclamation earthworks using dredged hydraulic fill

This European Standard deals with underwater excavation and hydraulic placement of fill material for land reclamation projects.
The scope is limited to soils that exhibit free-draining behaviour during and after placement.
The main purpose of this European Standard is to ensure that functional requirements and specifications for such projects are in harmony with site boundary conditions and construction methods.
This European Standard specifies minimum requirements for site related data to be acquired before the procurement and execution stage of a dredging and land reclamation project.
This European Standard gives guidance on how the selection of the dredging equipment shall be undertaken. It also gives guidance on the selection of a borrow area and on the judgement regarding the suitability of the fill material for the project.
This European Standard offers the general principles on how to design the actual execution of a dredged hydraulic fill project and offers guidelines for monitoring and quality control of that execution in order to guarantee that the fill mass exhibits the behaviour as intended by the designer of the land reclamation.
This European Standard does not cover dredging and/or placement of rock, mine tailings, mineral wastes and contaminated soils.

Erdarbeiten - Teil 6: Landgewinnung mit nassgebaggertem Einbaumaterial

Diese Europäische Norm behandelt den Aushub unter Wasser und Einbau im Spülverfahren für Landgewin-nungsvorhaben.
Der Anwendungsbereich beschränkt sich auf Böden, die während und nach dem Einbau natürlich dränierbar sind.
Diese Europäische Norm soll in erster Linie sicherstellen, dass funktionale Anforderungen und Festlegungen für derartige Vorhaben im Einklang mit den Randbedingungen auf der Baustelle und den Bauverfahren sind.
Diese Europäische Norm legt Mindestanforderungen an die baustellenbezogenen Daten fest, die vor den Beschaffungs- und Ausführungsphasen eines Nassbaggerungs- und Landgewinnungsvorhabens einzuholen sind.
Diese Europäische Norm gibt eine Anleitung, wie Nassbaggergeräte ausgewählt werden müssen. Sie enthält auch Hinweise zur Wahl von Entnahmestellen und zur Einschätzung der Eignung des Einbaumaterials für das Bauvorhaben.
Diese Europäische Norm legt allgemeine Grundsätze für die Planung der Ausführung von nassgebaggertem Einbau im Spülverfahren und Hinweise zur Überwachung und Qualitätskontrolle der Ausführung fest, um sicherzustellen, dass die Einbaumenge das vom Planer des Landgewinnungsvorhabens vorgesehene Verhal-ten aufweist.
Diese Europäische Norm gilt nicht für Nassbaggerung und/oder Einbau von Fels, Waschbergen, minerali-schen Abfällen und verunreinigten Böden.

Terrassements - Partie 6: Terre-plein en remblai hydraulique dragué

La présente Norme européenne traite de l'excavation sous l'eau et de la mise en place hydraulique de matériau de remblai pour les projets de terre-plein.
Elle se limite aux sols avec un comportement drainant pendant et après la mise en place.
Le principal objectif de la présente Norme européenne est de garantir que les spécifications et exigences fonctionnelles des projets de ce type sont en accord avec les conditions limites du site et les méthodes de construction.
La présente Norme européenne spécifie les exigences minimales applicables aux données relatives au site devant être acquises avant la passation de marché et l'étape d'exécution d'un projet de dragage et de terre-plein.
La présente Norme européenne fournit des préconisations sur la manière dont le choix du matériel de dragage doit être effectué. Elle fournit également des préconisations sur le choix d'une zone d'emprunt et sur l'évaluation de l'aptitude à l'emploi du matériau de remblai pour le projet.
La présente Norme européenne indique les principes généraux de conception de l'exécution d'un projet de terre-plein en remblai hydraulique dragué et fournit des lignes directrices pour la surveillance et le contrôle de la qualité de cette exécution dans le but de garantir que le corps de remblai affiche le comportement prévu par le concepteur du projet de terre-plein.
La présente Norme européenne ne comprend pas le dragage et/ou l'apport de roches, de déchets miniers, de déchets minéraux et de sols contaminés.

Zemeljska dela - 6. del: Pridobivanje novih zemljišč s hidravličnim nasipanjem sedimentov, izkopanih pod vodo

Ta evropski standard se ukvarja s podvodnim izkopavanjem in hidravličnim nasipavanjem sedimentov za projekte pridobivanja novih zemljišč, ki zagotavljajo strukturno podporo. Obravnava predvsem zemljine, ki med in po namestitvi izkazujejo drenažne lastnosti.
Ta evropski standard določa minimalne zahteve za podatke, povezane z lokacijo, ki jih je treba pridobiti pred razpisom ter fazo izvedbe projekta nasipavanja in pridobivanja novih zemljišč.
Ta evropski standard podaja navodila o tem, kako se lotiti izbire opreme za nasipavanje. Podaja tudi navodila za izbiro območja izkopavanja.
Ta evropski standard ponuja splošna načela za projektiranje dejanskega izvajanja projekta hidravličnega nasipavanja ter podaja smernice za spremljanje in nadzor kakovosti tega izvajanja, da se zagotovi, da sedimenti zajemajo lastnosti, ki jih je predvidel projektant pridobivanja novega zemljišča.
Ta evropski standard ne podaja predpisov niti priporočil ali vodil za nasipavanje s skalami, rudniškimi odpadki, mineralnimi odpadki in kontaminiranimi zemljinami.
Cilj tega evropskega standarda je omogočanje vzajemnega razumevanja vseh strank, vpletenih v projektiranje izvajanja projekta hidravličnega nasipavanja sedimentov. Določa okvir za doseganje jasnih in nedvoumnih ciljev ter dogovorov. Glavni namen tega evropskega standarda je zagotoviti, da so funkcionalne zahteve in specifikacije za take projekte skladne z mejnimi pogoji lokacije ter gradbenimi metodami.

General Information

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Published
Publication Date
04-Dec-2018
Technical Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Erdarbeiten - Teil 6: Landgewinnung mit nassgebaggertem EinbaumaterialTerrassements - Partie 6 : Terre-plein en remblai hydraulique draguéEarthworks - Part 6: Land reclamation earthworks using dredged hydraulic fill93.020Zemeljska dela. Izkopavanja. Gradnja temeljev. Dela pod zemljoEarthworks. Excavations. Foundation construction. Underground worksICS:Ta slovenski standard je istoveten z:EN 16907-6:2018SIST EN 16907-6:2019en,fr,de01-april-2019SIST EN 16907-6:2019SLOVENSKI

STANDARD
SIST EN 16907-6:2019
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16907-6
December
t r s z ICS
{ uä r t r English Version
Earthworks æ Part

xã Land reclamation earthworks using dredged hydraulic fill Terrassements æ Partie

x ã Terreæplein en remblai hydraulique dragué
Erdarbeiten æ Teil

xã Landgewinnung mit nassgebaggertem Einbaumaterial This European Standard was approved by CEN on

s v May
t r s zä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels

t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s x { r yæ xã t r s z ESIST EN 16907-6:2019

EN 16907-6:2018 (E) 2 Contents Page European foreword .......................................................................................................................................................5 Introduction .....................................................................................................................................................................6 1 Scope ....................................................................................................................................................................7 2 Normative references ....................................................................................................................................7 3 Terms and definitions ....................................................................................................................................9 4 Symbols and abbreviations ....................................................................................................................... 13 5 Stages of land reclamation projects ....................................................................................................... 13 6 Design aspects for earthworks with dredged hydraulic fill .......................................................... 14 6.1 Introduction.................................................................................................................................................... 14 6.2 Basis of Design ............................................................................................................................................... 14 6.2.1 General ............................................................................................................................................................. 14 6.2.2 Scope of Work ................................................................................................................................................ 15 6.2.3 The project site .............................................................................................................................................. 15 6.2.4 Standards and Codes of Practice ............................................................................................................. 15 6.2.5 Functional requirements ........................................................................................................................... 15 6.2.6 Boundary conditions and constraints ................................................................................................... 15 6.2.7 Performance requirements ...................................................................................................................... 16 6.2.8 Site data ............................................................................................................................................................ 16 6.2.9 Borrow area .................................................................................................................................................... 16 6.2.10 Environmental constraints ....................................................................................................................... 17 6.2.11 Regulations, permits and licenses .......................................................................................................... 17 6.3 General design aspects ............................................................................................................................... 17 6.3.1 Earth-structure design aspects ................................................................................................................ 17 6.3.2 Morphological and environmental aspects ......................................................................................... 17 6.4 Boundary conditions affecting the execution ..................................................................................... 18 6.4.1 General ............................................................................................................................................................. 18 6.4.2 Locations of land reclamation area, borrow area and disposal site .......................................... 18 6.4.3 Soil conditions at the land reclamation area ...................................................................................... 18 6.4.4 Soil conditions at the borrow area ......................................................................................................... 18 6.4.5 Suitable fill material properties .............................................................................................................. 19 6.4.6 Dredging close to existing structures .................................................................................................... 19 6.4.7 Construction tolerances ............................................................................................................................. 19 6.4.8 Return of process water ............................................................................................................................. 19 6.4.9 Ground improvement of the fill mass and the subsoil .................................................................... 19 6.4.10 Project execution time and milestones ................................................................................................ 19 6.5 Earthworks design considerations ........................................................................................................ 20 6.5.1 Introduction.................................................................................................................................................... 20 6.5.2 Land reclamation area ................................................................................................................................ 20 6.5.3 Borrow area .................................................................................................................................................... 20 6.5.4 Available quantity of suitable fill material .......................................................................................... 21 6.6 Design considerations in relation to dredging equipment ............................................................ 22 7 Technical specifications for earthworks with dredged hydraulic fill ....................................... 22 7.1 Introduction.................................................................................................................................................... 22 SIST EN 16907-6:2019

EN 16907-6:2018 (E) 3 7.2 Technical specifications for the subsoil ............................................................................................... 22 7.3 Technical specifications for the fill mass ............................................................................................. 22 7.4 Technical specifications for the fill material ...................................................................................... 23 8 Data collection ............................................................................................................................................... 23 8.1 General ............................................................................................................................................................. 23 8.2 Bathymetrical and topographical data ................................................................................................. 24 8.3 Geotechnical and geophysical data ........................................................................................................ 24 8.3.1 General ............................................................................................................................................................. 24 8.3.2 Geotechnical and geophysical data in the borrow area .................................................................. 24 8.3.3 Geotechnical and geophysical data in the land reclamation area............................................... 26 8.4 Hydrological and meteorological data .................................................................................................. 26 8.5 Seismic data .................................................................................................................................................... 27 8.6 Morphological and environmental data ............................................................................................... 27 8.6.1 General ............................................................................................................................................................. 27 8.6.2 Sediment transport ...................................................................................................................................... 27 8.6.3 Total Suspended Solids (TSS) and turbidity ....................................................................................... 28 8.6.4 Organic matter and gas ............................................................................................................................... 28 8.6.5 Contaminants ................................................................................................................................................. 28 8.6.6 Underwater sound ........................................................................................................................................ 28 8.7 Seabed features ............................................................................................................................................. 28 8.8 Site constraints .............................................................................................................................................. 29 9 Equipment ....................................................................................................................................................... 30 9.1 Selection of the dredging equipment..................................................................................................... 30 9.1.1 General ............................................................................................................................................................. 30 9.1.2 Selection of the dredging equipment based on the capabilities of the equipment ....................................................................................................................................................... 30 9.1.3 Selection of the dredging equipment based on hydraulic and meteorological conditions ........................................................................................................................................................ 30 9.1.4 Selection of the dredging equipment based on the presence of shipping ................................ 31 9.1.5 Selection of the dredging equipment based on environmental restrictions .......................... 31 9.2 Typical dredging equipment .................................................................................................................... 31 9.3 Accuracy and tolerances ............................................................................................................................ 32 9.4 Minimal vessel requirements for monitoring and data logging .................................................. 32 10 Design of the execution of earthworks with dredged hydraulic fill ........................................... 33 10.1 Construction ................................................................................................................................................... 33 10.1.1 General ............................................................................................................................................................. 33 10.1.2 Preparation phase ........................................................................................................................................ 33 10.1.3 Construction phase ...................................................................................................................................... 34 10.1.4 Post-construction phase ............................................................................................................................. 35 10.2 Selection of placement method ............................................................................................................... 35 10.3 Preparation of the seabed for dredging and for the land reclamation works ........................ 37 10.4 Containment bunds ...................................................................................................................................... 38 10.5 Process water management ...................................................................................................................... 39 10.6 Water table in the land reclamation area ............................................................................................ 39 10.7 Use of cohesive or fine grained materials ............................................................................................ 39 10.8 Ground improvement .................................................................................................................................. 39 11 Quality control ............................................................................................................................................... 40 11.1 General ............................................................................................................................................................. 40 11.2 Quality Control Plan ..................................................................................................................................... 40 11.3 Monitoring and testing ............................................................................................................................... 41 11.4 Dimensions and boundary conditions .................................................................................................. 41 SIST EN 16907-6:2019

EN 16907-6:2018 (E) 4 11.4.1 Borrow area .................................................................................................................................................... 41 11.4.2 Land reclamation area ................................................................................................................................ 42 11.5 Quality of the fill material .......................................................................................................................... 42 11.5.1 Source material in borrow area .............................................................................................................. 42 11.5.2 Fill material in land reclamation area .................................................................................................. 42 11.6 Fill mass ........................................................................................................................................................... 42 11.6.1 Bearing capacity ............................................................................................................................................ 42 11.6.2 Slope stability ................................................................................................................................................. 43 11.6.3 Consolidation and deformations ............................................................................................................. 43 11.6.4 In situ density and density index ............................................................................................................ 43 11.6.5 Permeability ................................................................................................................................................... 45 11.6.6 Frequency of testing .................................................................................................................................... 45 11.6.7 Environmental monitoring ....................................................................................................................... 46 11.7 Handover documentation .......................................................................................................................... 47 Annex A (informative)

Non EN and non ISO test and monitoring methods .......................................... 48 A.1 General ............................................................................................................................................................. 48 A.2 Electrical piezometer .................................................................................................................................. 49 A.3 Inclinometer ................................................................................................................................................... 49 A.4 Rod and plate settlement gauges ............................................................................................................ 49 A.5 Settlement profiling tube ........................................................................................................................... 50 A.6 Trial embankment ........................................................................................................................................ 50 A.7 Zone Loading Test ........................................................................................................................................ 51 Annex B (informative)

Determination of minimum and maximum dry densities and density index .................................................................................................................................................. 52 B.1 General ............................................................................................................................................................. 52 B.2 British Standard procedures .................................................................................................................... 52 B.2.1 General ............................................................................................................................................................. 52 B.2.2 Minimum dry density of sands ................................................................................................................. 52 B.2.3 Minimum dry density of gravelly soils .................................................................................................. 53 B.2.4 Maximum dry density of sands ................................................................................................................ 53 B.2.5 Maximum dry density of gravelly soils ................................................................................................. 53 B.3 ASTM procedures .......................................................................................................................................... 53 B.3.1 General ............................................................................................................................................................. 53 B.3.2 Minimum index dry density ...................................................................................................................... 53 B.3.3 Maximum index dry density ..................................................................................................................... 54 B.4 Density index .................................................................................................................................................. 54 Bibliography ................................................................................................................................................................. 55

SIST EN 16907-6:2019

EN 16907-6:2018 (E) 5 European foreword This document (EN 16907-6:2018) has been prepared by Technical Committee CEN/TC 396 “Earthworks”, 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 June 2019, and conflicting national standards shall be withdrawn at the latest by June 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document is one of the European Standards within the framework series of EN 16907 on Earthworks. The set of standards prepared by CEN/TC 396 is divided into several parts, which correspond to different steps of the planning, execution and control of earthworks and should be considered collectively as a group of standards for executing earthworks. The full set of Parts is as follows: — EN 16907-1 Earthworks — Part 1: Principles and general rules; — EN 16907-2 Earthworks — Part 2: Classification of materials; — EN 16907-3 Earthworks — Part 3: Construction procedures; — EN 16907-4 Earthworks — Part 4: Soil treatment with lime and/or hydraulic binders; — EN 16907-5 Earthworks — Part 5: Quality control; — EN 16907-6 Earthworks — Part 6: Land reclamation earthworks using dredged hydraulic fill (this document); — EN 16907-7 Earthworks — Part 7: Hydraulic placement of extractive waste. Within this standard references to specific parts of the standard are written by the full reference (e.g. “EN 16907-2”). These “Earthworks standards” do not apply to the environmental planning and geotechnical design that determines the required form and properties of the earth-structure that is to be constructed. They apply to the design of the earthworks materials, execution, monitoring and checking of earthworks construction processes to ensure that the completed earth-structure satisfies the geotechnical design. 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 16907-6:2019

EN 16907-6:2018 (E) 6 Introduction Dredging and land reclamation projects generally have three main stages: Pre-construction (Initiative, Initiation, Earth-structure Design and Procurement), Construction (including the earthworks design of a dredged hydraulic fill project) and Post-construction (Use and End of life). This standard covers the execution stage of land reclamation with dredged hydraulic fill and the associated design of the works. The design of a land reclamation itself is not covered in detail in this standard. For the geotechnical design aspects of land reclamation works, reference is made to EN 1997-1, Eurocode 7: Geotechnical design - Part 1: General rules and the relevant parts of the EN 1998 series Eurocode 8: Design of structures for earthquake resistance. The principles of dredging and hydraulic fill equipment are discussed in outline. For more detail reference is made to textbooks such as the Hydraulic Fill Manual [1]. SIST EN 16907-6:2019

EN 16907-6:2018 (E) 7 1 Scope This European Standard deals with underwater excavation and hydraulic placement of fill material for land reclamation projects. The scope is limited to soils that exhibit free-draining behaviour during and after placement. The main purpose of this European Standard is to ensure that functional requirements and specifications for such projects are in harmony with site boundary conditions and construction methods. This European Standard specifies minimum requirements for site related data to be acquired before the procurement and execution stage of a dredging and land reclamation project. This European Standard gives guidance on how the selection of the dredging equipment shall be undertaken. It also gives guidance on the selection of a borrow area and on the judgement regarding the suitability of the fill material for the project. This European Standard offers the general principles on how to design the actual execution of a dredged hydraulic fill project and offers guidelines for monitoring and quality control of that execution in order to guarantee that the fill mass exhibits the behaviour as intended by the designer of the land reclamation. This European Standard does not cover dredging and/or placement of rock, mine tailings, mineral wastes and contaminated soils. 2 Normative references The following documents are referred to in the 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. EN 933-7, Tests for geometrical properties of aggregates — Part 7: Determination of shell content — Percentage of shells in coarse aggregates EN 1997-1, Eurocode 7: Geotechnical design — Part 1: General rules EN 1997-2, Eurocode 7 — Geotechnical design — Part 2: Ground investigation and testing EN 1998 (all parts), Eurocode 8 — Design of structures for earthquake resistance EN 13137, Characterization of waste — Determination of total organic carbon (TOC) in waste, sludges and sediments EN 13286-47, Unbound and hydraulically bound mixtures — Part 47: Test method for the determination of California bearing ratio, immediate bearing index and linear swelling EN ISO 10693, Soil quality — Determination of carbonate content — Volumetric method (ISO 10693) EN ISO 14688-1, Geotechnical investigation and testing — Identification and classification of soil — Part 1: Identification and description (ISO 14688-1) EN ISO 17892-1, Geotechnical investigation and testing — Laboratory testing of soil — Part 1: Determination of water content (ISO 17892-1) SIST EN 16907-6:2019

EN 16907-6:2018 (E) 8 EN ISO 17892-3, Geotechnical investigation and testing — Laboratory testing of soil — Part 3: Determination of particle density (ISO 17892-3) EN ISO 17892-4, Geotechnical investigation and testing — Laboratory testing of soil — Part 4: Determination of particle size distribution (ISO 17892-4) EN ISO 17892-7, Geotechnical investigation and testing — Laboratory testing of soil — Part 7: Unconfined compression test (ISO 17892-7) CEN ISO/TS 17892-8, Geotechnical investigation and testing — Laboratory testing of soil — Part 8: Unconsolidated undrained triaxial test (ISO/TS 17892-8) CEN ISO/TS 17892-9, Geotechnical investigation and testing — Laboratory testing of soil — Part 9: Consolidated triaxial compression tests on water saturated soil (ISO/TS 17892-9) CEN ISO/TS 17892-10, Geotechnical investigation and testing — Laboratory testing of soil — Part 10: Direct shear tests (ISO/TS 17892-10) CEN ISO/TS 17892-11, Geotechnical investigation and testing — Laboratory testing of soil — Part 11: Determination of permeability by constant and falling head (ISO/TS 17892-11) CEN ISO/TS 17892-12, Geotechnical investigation and testing — Laboratory testing of soil — Part 12: Determination of Atterberg limits (ISO/TS 17892-12) EN I

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