Technical Specifications
Contiguous retaining wall
made of bored piles
- 132 No contiguous piles
- Ø 750 & 450 mm
- depths of up to 15m
The Challenge
The project to construct a bored pile retaining wall, required the works to be carried out on an elevated platform, which was restricted in nature. The restrictions to the platform, limited the size of the piling equipment which could be used for the project.
In addition, the site was also situated adjacent to a live dual carriage way on one side, and a school on another, necessitating carefully coordinated deliveries to the project. A listed church spire located at the centre of the works further inhibited the movement of plant and equipment around the site, and frequent sandstone obstructions from the foundations of previous buildings, and naturally occurring boulders in the glacial till were to be encountered increasing the difficulties to the piling operations.
The finished office structure was to incorporate the Triple Kirks Spire as the centre piece of its development.
The Solution
Martello employed two of their MP5000 series piling rigs to carry out the works, and these were comfortably able to work within the restricted platform area and install the 132No 750mm diameter piles.
Using coring equipment, Martello were able to remove the existing foundation obstructions and boulders along the line of the wall and install the piles needed to support the new office structure. Martello planned all deliveries in advance to keep disruptions to the school and local businesses to a minimum, and to ensure a safe environment during those deliveries.
