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Artikel publicerad i Vatten 1986-2, sid 114-117

FÖRNYELSEPLANERING AV AVLOPPSLEDNINGAR I STOCKHOLM / Sewer Rehabilitation in Stockholm

Abstract
The Stockholm Water and Wastewater Works have studied the needs for sewer rehabilitation to maintain an acceptable standard. The planning of the rehabilitation is being performed in three different steps. The first step was an overview in 1983 called "The Stockholm Sewer System. Master Plan 1983". It includes a summary of reported problems together with a hydraulic analyze and a choice of system in different parts of Stockholm. The status of a sewer is determined by the hydraulic function and the structural condition. Before assessing the structural condition, we will proceed with the second step: to give some parts of the sewer systems a higher priority for detailed investigations. This is done by dividing the sewers into different categories. The third step will then comprise performance of the detailed investigations.
The cost for sewer rehabilitation in the next 10 years has been calculated. Compared to today's budget a 40 % increase is needed.

Key words
sewer rehabilitation, strategy, priority

 
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