Trashscreen and Penstock design - South Benfleet - Projects - MLM
Trashscreen and Penstock design - South Benfleet - Projects - MLM
Trashscreen and Penstock design - South Benfleet - Projects - MLM
Trashscreen and Penstock design - South Benfleet - Projects - MLM

Trashscreen and Penstock Design – South Benfleet

Project Information
  • Location
  • South Benfleet
  • Sector
  • Transport, Ports & Harbours / River & Marine
  • Services
  • Infrastructure, Civil Engineering, Biodiversity & Ecology

Working in collaboration with JacksonHyder, MLM was appointed to design a large inlet structure comprising a new reinforced concrete headwall and trash screen. A large existing structure was reused where possible and fitted with a secondary trash screen to deal with exceptionally high flows. Associated works included re-profiling the existing channel, reinforced earth slopes, improved access to the site and gabion scour protection. A penstock was fitted within the second manhole to prevent flooding in the case of failure of the flap valve fitted to the discharge into East Haven Creek.

Due to the condition of the structure (red carded and confined space), access was not available until construction commenced. Intrusive investigations in the early construction phase then allowed the existing structure to be assessed, significant elements to be reused and the design finalised as construction progressed.

MLM provided engineering support to the contractor during construction and liaised with the Environment Agency throughout.

MLM conducted ecological mitigation at the site to ensure that the works considered protected species. This included designing methods of works to minimise the risk to reptiles and overseeing and conducting destructive searches at the site prior to works being undertaken. MLM identified the presence of Japanese Knotweed at the site and provided Jackson Civil Engineering with advice on how to conduct works to avoid the spread of this invasive species.

Key Features

  • Working in watercourse.
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