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n Journal of the South African Institution of Civil Engineers - Witbank's 60 M floating cover reservoir : a review of the first six years of operation : technical paper

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Abstract

Although membrane-lined and membrance-covered potable water reservoirs have been constructed and in operation since the late 1950s in the USA, the 60 M reservoir constructed in Witbank in 1984 was the first major reservoir of this type in Southern Africa. Chlorosulphonated polyethylene has been the material generally used for the 'floating' cover membrane. Since most research into the durability and suitability of this material as a floating cover for potable water reservoirs has been under conditions prevailing in the USA, it was decided at the construction stage to institute a 20-year programme for the testing and monitoring of the performance of the cover membrane of Witbank's reservoir. This paper describes the programme and reviews the results over the first six years of operation.

Alhoewel daar sedert 1960 'n aantal drinkwater-opgaardamme met plastiekmembraanvoering en -bedekking gebou is, is die 60 M opgaardam wat in 1984 in Witbank gebou is, die eerste van sy soort in Suid-Afrika. Chlorosulfonaatpolietileen is tot nou toe die materiaal wat vir die dekkingsmembrane gebruik is. Aangesien meeste van die navorsing op materiale wat vir die bedekking van hierdie soort opgaardamme gebruik is, min die VSA gedoen is, is daar besluit om 'n 20-jaartoetsprogram vir die dekkingsmembraan van stapel te laat loop. Hierdie verhandeling beskryf die program en bespreek die uitslae van toetse gedurende die eerste ses jaar se gebruik van die opgaardam.

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/content/civileng1/35/1/EJC26704
1993-01-01
2016-12-03
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