Product category:
Steel and Structural Frames
News Release from: Metsec | Subject: Long span trusses
Edited by the Buildingtalk Editorial
Team on 31 August 2007
Long span trusses on curved riverfront
development
Metsec has supplied 32 long span, lightweight steel trusses, plus zed purlins and 'C'-sections, to support the roof of 'The Hub', a curved, riverfront development in Chelmsford.
The crescent-shaped roof was highly complicated to design and detail as the hipped ends and valleys were not square, requiring the trusses and purlins to be set out to fit around a radius Kirk Allen, Metsec's Drawing Office Manager, said: "The detailing of this very complex roof design was simplified by the use of StruCAD 3D modelling software"
This article was originally published on Buildingtalk on 31 Aug 2007 at 8.00am (UK)
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The pitched lightweight steel trusses each spanned 15.5m and were 300mm deep at the shallow end, rising to 1400mm at the ridge to provide the required eight degree pitch.
The majority were delivered to site in two halves for ease of handling.
1400m of 142mm deep Metsec light gauge galvanised steel zed purlins of varying spans were bolted on top of the trusses to support the boarding which the stainless steel standing seam roof covering is fixed to.
1045m of Metsec 'C'-sections were attached to the underside of the trusses to provide a fixing for the protective layer of fireboard forming the ceilings of the penthouse apartments.
Metsec's trusses were specified because of their light weight, high strength and long span capabilities.
In addition, the free design and detailing service provided by Metsec as part of its customer support service was an additional factor given the highly complex nature of the roof.
The Hub is a four storey development by Higgins Homes PLC, consisting of 72 one and two bedroom luxury apartments, with retail space on the ground floor, on the banks of the River Chelmer in the centre of Chelmsford.
Fellow BCSA members Maldon Marine , the architectural and structural steelwork specialists on the project, erected the trusses, zed purlins and 'C' sections.".
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