BS EN 16907-6:2018 pdf download

BS EN 16907-6:2018 pdf download.Earthworks Part 6: Land reclamation earthworks using dredged hydraulic fill
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.
5 Stages of land reclamation projects
This standard covers the design of the earthworks for the execution of land reclamation projects using dredged hydraulic fill and is applicable after scheme identification, business case assessment and design of the earth-structure according to EN 1997-1, Eurocode 7: Geotechnical design – Part 1: General rules. The typical sequence for the design and construction of land reclamation projects shall follow the stages indicated below: Pre-construction stage; 一Execution (construction) stage; – Post-construction stage. NOTE For the first two stages reference is made to 4.2 of EN 16907-1 [11]. The Post-construction stage typically comprises: operation and maintenance, updating and de-commissioning. The design of the land reclamation during the Pre-construction stage shall be based on a sequence and method of construction to suit the contractor’s expected approach and equipment. However, this may not always match the contractor’s capability, plant and preferred method. For this reason, the contractor shall undertake further design for the execution of the project. The Execution (construction) stage shall not proceed until the design of the land reclamation prepared during the Pre-construction stage is developed in sufficient detail to demonstrate that the earth- structure is constructible with the materials available within the borrow area dedicated to the project, while meeting the user’s engineering and environmental performance requirements. The requirements for regulatory approvals run through all stages, with the final approvals at the end of the Execution (construction) stage.