Four final proposals technical and financial were

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Unformatted text preview: quay structure. Following a detailed review of the ITPs by the design team, four were accepted and one was rejected. Four final proposals (technical and financial) were submitted in August 2006. Following detailed evaluation by the project team, the contract was awarded to Daiho Corporation of Japan in November 2006. Their design concept for the quay consisted of interlocking steel pipe piles (with a two stage corrosion protection system) and a reinforced concrete coping wall. 12 Given the remote project location and limited local infrastructure, mobilization and startup was a major challenge/effort, and extended into the middle of 2007. Breakwater construction began in June 2007, with interim armour placed as the core was advanced. The full length (600 m) was reached in October. Completion of the full cross-section (i.e. berm, crest and rear slope armour) will proceed from the roundhead back. Land reclamation began in July, and dredging of the quay area began in August. As an aside, Daiho’s geotechnical investigation (which was completed from a self-elevating platform as the breakwater was advanced) confirmed the assumed soil conditions presented in the bid documents (as interpreted from the earlier geophysical investigations), so no significant modifications to the quay design were required. Figure 12 provides an overview of progress at the site as of September 2007. Figure 12 – Overview of Construction – September 2007 CLOSURE Construction of the mine and port are proceeding on schedule, with the first shipment of ilmenite expected to leave Port d’Ehoala in late 2008. The project has proceeded very smoothly, demonstrating a success story in private/public partnerships. The completed port will meet QMM’s needs, and will also provide a catalyst for economic development in the region. The successful implementation of this large, complex project is in large part due to the exceptional quality of the QMM team, and Rio Tinto’s corporate commitment to the people and environment of Madagascar. REFERENCES PIANC, 2003. State of the Art of Designing and Constructing Berm Breakwaters. Report of Working Group 40 of the Maritime Navigation Commission, International Navigation Association, Brussels. Scott, D., Werren, D., Kenny, T. and Petykowski, C., 2006. Breakwater Damage and Rehabilitation – Terceira Island, Azores. 30th International Conference on Coastal Engineering, ASCE. Sigurdarson, S., Viggosson, G. and Bjarki Smarason, O., 2005. Recent Berm Breakwater Projects, Coastlines, Structures and Breakwaters, ICE. 13 KEYWORDS – CSt07 Abstract acceptance number 266 DESIGN AND CONSTRUCTION OF A PORT IN SOUTHEAST MADAGASCAR 1st Author: MacNabb, Jeffrey B. 2nd Author: Anglin, C. David Coastal structures Breakwater Berm Port Design Physical modeling Construction...
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This note was uploaded on 02/04/2014 for the course HE 8450 taught by Professor Verhagen during the Spring '14 term at Technische Universiteit Delft.

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