Skanska, working with Serco, have undertaken the design and construction of a new prison at Belmarsh West. The Natta contract comprises all enabling, associated ground and external works for the complete new 900 inmate prison.
Scope of Works:
The site was remediated with the ‘Conform’ remediation system. This remediated platform became
the working platform for all the following site works. The Natta package includes surface & foul drainage, including a large diameter
precast concrete attenuating surface water system, diversion of the existing prisons foul pumping main. Ground beams, lift pits, pile caps,
ground floor slabs and general foundation works following the installation of the piling. The site demanded extensive and complex service
installation, Gas, Water, communications, security installed in a very large number of ducts, closely coordinated between the shallow and
deep drainage. A high water table combined with poor ground conditions required extensive use of temporary works.
The ‘external’ works include a ‘Bodpave’ access road system to the wall perimeter, visitor and main car park,
access roads, extensive landscape bunding and surface water ‘Swale’, underground fuel tanks, grease and petrol interceptors.
