43


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and John Laing plc but the latter has since sold out. The current shareholding is Skanska (37.5 per cent), Innisfree (50 per cent) and the Dutch Infrastructure Fund (12.5 per cent). With finan- cial close reached, Skanska was able to make a start. Separate project offices were established at each site with Ian


Dodds, the director at Barts, Keith Winton at the Royal London and Harry Winstanley working as operations director for the whole scheme from Skanska’s Aldersgate Street office. “We have one client and we have to ensure commonality of approach over both projects,” explains Winstanley. The work at Barts features 54,500 sq m of new build and


13,000 sq m of refurbishment and the nature of the central London site, particularly at Barts, made access an issue. Winstanley adds: “It’s a very tight site – building on the whole site with limited access within metres of an existing hospital, which is being kept running to full capacity throughout.” With no space for a goods yard, Skanska used an offsite facil- ity four miles away to the east and utilised a just-in-time delivery


system for materials brought to site. Before starting actual con- struction, substantial demolition of the old building – mostly nurses’ accommodation – was needed. This work and the subse- quent construction would be carried out close to the existing hospital, so Skanska took extra precautions. “Prior to starting demolition we provided forced ventilation


so that we could keep the windows sealed and provide secondary glazing in order to manage any dust and noise,” adds Winstanley. “We also installed noise and dust monitors and had to have quiet periods during the demolition and defined downtime, which was available to the client, but was not required.” Piling work featured 568 secant piles and 310 bearing piles,


and a total of 180,000 man-hours were needed to complete the 10,000 tonne concrete frame along with 2,500 concrete deliver- ies. These deliveries averaged out at a dozen a day and 350 con- crete pours were carried out, while the 41-high building includes 1,877 tonnes of steel, which is the same amount as used to assemble the London Eye.


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