Sludge Stacking Wall

Demonstrating our Problem Solving Capability

This contract demonstrates how, when given a problem to solve, we can provide a design and construct project that overcomes the local and site issues, which ensure a safe and positive use of the facility.

An existing pad was being used for sludge storage, however, the drainage system failed to cope with the liquid draw-off and the pad often discharged liquid around the perimeter, which was exacerbated with rain.

The main objective was to contain both the excess liquid and the sludge ‘cake.’ The problem was further confused, in that loaders had to be able to load the ‘cake’ on to lorries for transfer.

We looked at the issues and resolved to construct an in situ L shaped wall on top of the existing pad, pinned as shown with dowels at close centres and to have a steel fence reversed on top of the wall to ensure loaders did not use the wall as a block to improve the size of each load. Further we looked at the drainage of the area and again resolved to make a central fall to the lowest point of the pad and discharge that liquid back to the works for further processing.

We had an advantage with levels in determining at which point to site the drains, given this pad was at high level relative to the works. The scheme was another project that was completed within budget and further demonstrates how we can work with our clients in a partnership situation.

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Scrabbing the concrete prior to placing the starter slabs

Steel reinforcements in place for wall re-section

Extent of reinforcement used