Scottish Water had a problem with flooding in Edinburgh, where pressure-relieving valves that were not working had led to bursts. These valves had been the cause of major flooding in the area.
Scottish Water needed our groundworks support to help the installation of two new Pressure Reducing Valves (PRVs) and connecting pipework for Alnwickhill site, which was constructed by George Leslie Ltd.
kN/m maximum bending moment
by 13.5m by 4.5m deep excavation
We faced a number of challenges on the project, as it was located next to one of the main thoroughfares into Edinburgh, and was close to a new housing estate.
The project team needed a large open excavation in a bid to reduce the construction programme, due to the potential impact of further bursts.
The large excavation measured 18.3m by 13.5m by 4.5m deep, with a clear opening needed for the new valve chamber and connecting pipework to be installed.
To manage this large excavation and the maximum bending moment of 1950kN/m, we used our Supershaft Plus solution in the design as it is one of the industry's leading bracing systems.
We also provided ladder access platforms to meet the specific client requirements, helping the project move along as safely and effectively as possible.
The work replaces the existing PRVs at the site and provided an additional 2no. valves within a new partially buried chamber. The project is wholly contained within the existing Scottish Water site which benefits from existing access off Liberton Gardens.
Our engineered solutions range from standard designs to major projects, through to emergencies. We can also offer an end-to-end service from design and supply through to installation and removal.
We can work with you from initial concept design through to project completion, across all aspects of temporary works.
No matter how large or complex the project, we can help. It's what our major project teams do every day!