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JV appointed to oversee Polihali dam design, construction

21st July 2017

By: Megan van Wyngaardt

Creamer Media Contributing Editor Online

     

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The Lesotho Highlands Development Authority (LHDA) has appointed the Matla a Metsi joint venture (JV) to oversee the R445-million design and construction supervision of the Polihali dam,

one of the two main water transfer components of Phase 2 of the Lesotho Highlands Water Project (LHWP), with work expected to start this month.

The JV comprises South African construction companies GIBB and Mott MacDonald Africa, Tractebel Engineering and Coyne et Bellier, of France, and Lyma Consulting Engineers, of Lesotho.

The scope of services includes reviewing the geotechnical and other project information, the engineering design of the Polihali dam and appurtenant structures, the procurement of construction contracts and supervising the construction on behalf of the client.

Skills development and technology transfer to Lesotho and South African nationals and the training of LHDA staff for the purposes of operating the dam are also components of the consultancy contract.
The Polihali dam comprises a 164-m-high concrete-faced rockfill dam (CFRD) on the Senqu river, a 50-m-high CFRD saddle dam, a concrete side-channel spillway, a free-standing compensation outlet tower and appurtenant works. The design period will take around 18 months and will be followed by the procurement of the construction contractor.

Construction on the dam is expected to start in December 2019 or January 2020, with the dam envisaged to be completed in the wet season of 2023. Phase 2 of the LHWP builds on the successful completion of Phase 1 in 2003.

Edited by Chanel de Bruyn
Creamer Media Online Managing Editor

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