This project involved the construction of the new 12.5m dia x 13m deep, on-line, storm water storage tank at Bellsdyke, adjacent to the River Carron which included a reinforced concrete flow control chamber built around the main incoming sewer and storm return pumps complete with MCC panel. The work was carried out on a compact site, located 10m from the River Carron in an area with particularly poor ground conditions.
These difficult conditions were further compounded on encountering the remains of an old, disused pumping chamber which had been left in situ following the original upgrade of the works. The extent of this structure included the original piled support below the disused well. This resulted in the need to install a 6m deep well-point dewatering system to facilitate its complete removal Thereafter, the construction of the storm tank progressed using the caisson method, with the deepest sections being installed underwater.
The precast concrete roof comprised two 13t support beams and fifteen precast roof panels, which were installed using a 160t mobile crane.
Installation of the return pumps, level controls, telemetry and distinct control panel in the existing control building, together with final commissioning & handover completed the works.
The overall project involves the off-site fabrication and installation of a new linkspan structure at Oban Ferry Terminal for client Caledonian Maritime Assets Ltd (CMal).
12th February 2019
GL making a return visit to the Sound of Kerrera off Oban, to undertake substantial repairs to the breakwater which suffered collision damage following an altercation with a workboat earlier this year.
14th December 2018
Michael Matheson MSP and Cabinet Secretary for Transport, Infrastructure and Connectivity covered all his portfolios at the official opening of the new Polmadie Footbridge giving pedestrian and cycle transport access,
18th September 2018