BASEMENT FLOODINGS : RELIEVING THE HYDRAULIC GRADE LINE (HGL) WITH PROPORTIONAL OVERFLOW DEVICES.
Overflow events occur during wet weather when insufficient capacity is present in the collection system. In traditional design, a compromise must be struck between in-line retention of sewage and the risk of an higher hydraulic grade line (HGL). To solve this dilemma, optimization of the overflow weirs is required. This paper introduces the use of linear overflow devices that can help municipal managers in achieving both increased retention while protecting themselves against flooding. Examples of application while be presented where the required water head while be lowered by 50% for the same overflow rate.
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Document Type: Research Article
Publication date: 2000-01-01
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