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Commercial 2005. Prior to steel construction we had to construct “Fabsec beams offer a more efficient system for FACT FILE a haul road around Plot 4, to gain access to the floor build-up as they have ducts to carry services,” 3 & 4 More London larger Plot 3.” Mr King adds. “Otherwise the build-up would be Riverside, Southwark Six concrete cores, three for each building, greater as the services would have to run beneath Main client: More were formed by Laing O’Rourke, before any the beams.” London Developments Architect: steelwork commenced. However, when steelwork “Fabsec beams also have optimal fire protection Foster & Partners did begin, Plot 3 was first off the mark. Both plots properties,” Mr King sums up. Structural engineer: “Fabsec beams offer a Christmas 2005, as “One less trade on this up and adds Construction manager:ArupMr Barrow backswere completed by more efficient system the smaller Plot 4 had site is very important, that another Mace for floor build up as “It was important to especially on a worksite in favour of the Severfield-Reeveimportant factorSteelwork contractor:caught up by this time. they have ducts to get the steel structures with limited space.” Fabsec beams Project Value: £95mStructures Ltd carry services.” done before the is that they Steel tonnage: 4,400t Christmas holidays,” were coated with intumescent paint prior to being Mr Barrow explains. “That gave the concrete roof delivered to site and this meant less work to do on time to cure before roof fit-out began in January.” the project. Steelwork contractor Severfield-Reeve erected “One less trade on site is very important, both building’s frames in a two-floor sequence. especially on a worksite with limited space,” Mr Erecting columns to give a clear two-floor gap (8m) Barrow explains. ahead of decking contractor Richard Lees, which In total the project required Severfield to supply followed behind. 2,850t of steel for Plot 3, of which 1,775t was made Dave Lee, Severfield-Reeve Project Manager up of Fabsec beams, and a further 1,540t for Plot 4 says the majority of steel supplied to the project (936t Fabsec). consisted of Fabsec beams, primarily 650mm deep x Plot 3 is basically a U-shaped structure, with the 140mm wide. open end facing the river front and containing a “We delivered all steel to project in 20t loads,” Mr glass covered atrium. Severfield installed an array of Lee says. “And bolted everything together on site.” steel columns and beams, but an interesting feature Mike King, Project Manager for structural engineers of this building is the glass roof covering the atrium. Arup says the experience of using Fabsec beams Severfield installed two large cantilever box on other related More London plots meant it was girders, each weighing 15t, to support this glass an easy decision to use them on Plots 3 & 4. “The canopy. A further four 20m-long beams support decision was made very early in the design stage,” the canopy over a ninth floor balcony. Cladding he says. contractor for Plot 3, Permasteelalissa, supplied and The corner steel fins are an eye-catching architectural feature of Plot 4. NSC May 2006 23


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