Rising mains are a critical part of a sewer system and a considerable amount of technical information regarding the design and operation is, in theory, available.
However, much of this data is either held by diverse individuals, or knowledge has been lost with staff changes in the industry. There was no single document that brought together the main aspects of rising mains design and operation. There was therefore a need to gather industry / individual's experience and provide best practice in a single document.
Many UK rising mains are also nearing the end of their design life, so this work also examined methods used to assess residual rising main life and rehabilitation / repair techniques, which were previously not well documented. This Best Practise Rising Main Manual provides guidance on:
- Design of new and replacement rising mains
- Management of existing rising mains, odours and pigging issues
- Risk assessment for rising mains
- Inspection and assessment, including acceptance testing of new systems and assessment of residual life of existing systems
- Repair / rehabilitation / replacement.
- Reduced risk of rising mains failure, and associated compliance / customer issues
- Increased level of rising main serviceability through a better understanding of the relationships between design and operation
- Cost effective investment in rising mains through understanding the cost benefits of the range of repair / rehabilitation / replacement options
- Reduced odours from rising mains.