Jackson recently completed a project on Bretton Reservoir, a 19th Century listed structure, which is situated in the Yorkshire Sculpture Park, an internationally renowned tourist attraction.
The reservoir was no longer compliant with the reservoirs act both in terms of stability and also its ability to pass maximum probable flood levels, so the Jackson team had the task of restoring it, to protect it for the future, whilst preserving the historical aesthetic integrity of the reservoir wall and river cascade.
The design of the works was sympathetically developed using modern construction techniques whilst ensuring that the original aesthetics of the reservoir and Dearne cascade were preserved. Site won masonry materials were re-used wherever possible using specialist masons and construction techniques that harmonised with the existing heritage structures on site.
Innovative temporary works solutions were developed to ensure that the dams stability was not affected during construction whilst maintaining reservoir and river flows through the works. This included supporting the toe of the reservoir whilst installing a ground anchored precast retaining wall clad with site won existing masonry materials.
Craig Hardy, Project Manager said: “This project was particularly challenging as we also had to manage the river and reservoir flows through a very wet winter. This was undertaken using a combination of innovative flumes, diversions and syphon pipes.”
The project exemplifies how technically complex civil engineering projects can be designed and constructed to restore failing heritage structures to their former glory and to retain them for future generations.