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2017 FULTON AWARDS – EC Branch – Mndwaka Dam

Commendation: Infrastructure

The Mndwaka Dam

Judges’ Citation:

The Mndwaka Dam is a classic example of how a relatively simple construction method such as Rubble Masonry Construction can provide vital water infrastructure to remote rural areas. This RMC multiple arch-buttress dam provides domestic water supply to 63 rural villages. Its height of almost 30 m and its RMC volume of approximately 30 000 m³ makes Mndwaka Dam the highest and largest RMC dam of this type yet constructed in southern Africa.

The curving lines of the dam were selected to blend into the rolling hills of the Eastern Cape coastal region, producing an unobtrusive, though striking feature. It is noteworthy that during the construction stage utmost care was taken to minimise the environmental impact. All the materials were sourced, screened and crushed within the dam basin and the scars left from the quarrying and crushing have all been inundated after the first filling of the dam. The use of this type of construction maximised social benefits to the community, not only by being labour intensive which allowed a source of income and upliftment, but also as an opportunity to facilitate the transfer of skills into the local community.

A worthy recipient of a judges’ commendation.

Location:  Eastern Cape
Submitted by:  Zana Manzi Joint Venture (Pty) Ltd
Client:  Amathole District Municipality
Principal Agent:  Sontinga Consulting Services in association with ARQ Consulting Engineers
Main Contractor:  Zana Manzi Joint Venture (Pty) Ltd
Specialist Sub-Contractors:  Rodio Geotechnics (Pty) Ltd
Suppliers:  AfriSam, a.b.e. Construction Chemicals, Chryso