CPA Bulletin

www.cpa.uk.net CPA Bulletin > February/March 2021 25 Civil engineering contractor Kier is constructing a fish pass as part of major environmental works on the River Severn, with Mabey Hire having supplied a bespoke groundworks support package. During the course of the works this package had to respond to the design changes imposed by the local geology, as well as the load conditions and sequencing of the works. Work on the Lincomb Fish Pass near Stourport-on-Severn began last year, with Kier Professional Services having undertaken the design of the 75-metre-long reinforced concrete structure. The finished structure will enable twaite shad, a type of herring, to once again migrate freely upstream to spawn. This is one of four fish passes on the River Severn being installed as part of ‘Unlocking the Severn’ - an ambitious river conservation project led by Canal & River Trust in partnership with Severn Rivers Trust, the Environment Agency and Natural England. Keir is the lead delivery partner for these fish pass construction works. Mabey Hire’s temporary works design was created using a cofferdam to enable the safe propping of sheet pile walls, while the ground was excavated by a long reach excavator, supported by a mini-digger. Then, as a layer of siltstone bedrock within the zone of works prevented the piles being sunk to the original depth intended, Mabey Hire’s groundworks solution was revised as work progressed, to enable a secondary lower level to be installed. Mabey Hire’s Groundworks Solution NEWS FROMCPA MEMBERS: 4 Hoists, Lifts & Work Platforms For over 70 years, Alimak has been the world’s leading producer of rack & pinion driven access lifts, construction hoists and mast climbing work platforms. Alimak offers an efficient solution to the vertical transportation of passengers and materials. The heavy duty drive system is perfect for use in the construction industry and in a range of industrial facilities, such as: www.alimak.co.uk . Offshore . Bridges . Power Stations . Chemical Plants . Cement Plants . Warehousing . Refineries . Manufacturing . Mines . Ports To submit news for consideration for future issues of the CPA Bulletin, please email: lisa@lisacollinscommunications.co.uk