The Circle Line (CCL) which is set to be fully completed from 2010 onwards, will cut travelling time and allow commuters to bypass busy interchanges like City Hall and Raffles Place. Costing $ 6.7 billion, the CCL will be a fully underground orbital line linking all radial lines leading to the city. It will be 33.3 km long with 29 stations.
A combination of PERI’s ST 100 Stacking Towers, the MULTIPROP system and the VARIO GT 24 Girder Wall formwork system were used in the construction of some of the 6 stations and a certain section of the tunnels. The stations were Bartley, Tai Seng, MacPherson, Paya Lebar, Dakota and Mountbatten. In all cases, PERI’s formwork systems were able to meet the challenges of working within the confined space underground and with multiple struts above. The ST 100 Stacking Towers with height from a few metres up to 10 m, provided shoring for slabs that were up to 2 m thick.
