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Assessment of existing soakaways for reuse

Assessment of existing soakaways for reuse

Chen, H. P., Stevenson, M. W. and Li, C.-Q. (2008) Assessment of existing soakaways for reuse. Proceedings of the Institution of Civil Engineers-Water Management, 161 (3). pp. 141-149. ISSN 1741-7589 (doi:10.1680/wama.2008.161.3.141)

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Abstract

This paper describes a practical approach for the investigation, assessment and design of existing soakaways. This method can be utilised for measuring the performance and capacity of the systems and examining whether the systems are suitable for reuse when information about the design and installation of the systems is not available. The requirements for field observations and the procedure for a soil infiltration test for the installed system are suggested for successful assessment. The soil infiltration rate of the system is estimated from the field test data without requiring information on the design and construction details of the system. The system's working condition is measured by a performance indicator related to the time taken to empty the soakaway. This is then employed to evaluate the potential reuse of the system. The system's drain capacity is determined by the design principles of current practice and the effect of climate change on its drain capacity is considered. Contamination of soils around the systems after long-term use of discharge service and the water present in soakaway chambers are also investigated. A detailed case study for the reuse of four installed soakaways for a new housing development demonstrates how the proposed approach provides a straightforward process for the infiltration performance and drain capacity assessment of the existing systems. The effectiveness and applicability of the proposed approach are further demonstrated from the assessments for a number of installed systems over various sites

Item Type: Article
Uncontrolled Keywords: field testing & monitoring, maintenance & inspection, pollution, sewers & drains, assessment
Subjects: T Technology > T Technology (General)
T Technology > TD Environmental technology. Sanitary engineering
Pre-2014 Departments: School of Engineering
School of Engineering > Department of Civil Engineering
Related URLs:
Last Modified: 14 Oct 2016 09:07
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/2634

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