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Published byKeenan Crackel Modified over 9 years ago
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International Federation of Consulting Engineers Speaker: Richard Kell AM FTSE BE(Hons) HonFIEAust CPEng, Director, Cardno International Pty Ltd
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Other Forms of Contract
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World Bank SBD for Small Works. Labour Based (LBES) Contracts FIDIC short form In country Contracts (eg, Philippines) – can lead to problems. * FIDIC Design Build or MDB Construction,Design by Employer with Design Build Inclusion. FIDIC MDB Harmonised Construction Contract Conference
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MAKIRA RIVER CROSSINGS SOLOMON ISLANDS FIDIC MDB Construction Contract with Design, Build Inclusions Case Study : Makira River Crossings, Solomon Islands
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MAKIRA CROSSINGS PROJECT: DETAILS 26 River Crossings in Coastal Highway on Makira Island, Solomon Islands High level and low level bridges, causeways and fords 2010 – 2012 Contract Value $17 million
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MAKIRA BRIDGES – MANAGEMENT AND FINANCING Finance: AusAID, NZAID, ADB (grant funds) Management by ADB EA: SI Ministry of Infrastructure Project Management: Cardno Australia Contractor: McConnell Dowell NZ. Crossings create connectivity, alleviate poverty and improve way of life for locals.
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Makira Bridges Challenges: – Rivers are braided, some carry large debris loads; – High peak rainfall; – Seismic effects; – Remote sites. – Limited budget. Low traffic volumes favour low level, submergible structures, and do not justify high level bridges throughout.
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MAKIRA BRIDGES: CONTRACT FIDIC 2006 MDB Harmonised Version of Construction Contract. *Design by Employer, BUT High level Bridges: Design by Contractor, FIDIC MDB provisions for design by contractor not sufficient.
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MAKIRA HIGH LEVEL BRIDGES: DESIGN BUILD PROVISIONS * Separate SECTION of Specification dedicated to Design and Construction of High Level Bridges. Design criteria in Bid Documents: Bidder submits Concept Bridge Proposal in reasonable detail; Design Engineer, Geotechnical Engineer, Independent Design Reviewer: To be nominated with Bid, and on completion of tasks, to issue certificates; Contractor to submit full details, but Engineer does not approve Contractor’s Design Engineer to make inspections.
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MAKIRA CROSSINGS Advantages of Design Build – Contractor can provide a standard or existing design to his and Employer’s cost and time advantage; – Design and geotechnical risks transferred to contractor. Design Form Proposed: Tied Steel Arch, 75m span. As specified : above 100 year flood, T44 loading, single lane with concrete deck. Outcome: Very successful.
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Coastal wharves
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Low Level Bridges
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Low Level Bridges - Precast Concrete
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Maharoa Bridge, 75 m Tied Arch
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