The building, designed by the award-winning David Chipperfield Architects, is one of six buildings around Pancras Square which sits between St Pancras International and King’s Cross Station.
Cast iron was chosen as a building material as it is in keeping with the area’s Victorian heritage and travellers passing through both railway stations will see the original large roof structures made using cast and wrought iron. The use of this wholly recyclable metal will contribute to the building meeting the BREEAM ‘Outstanding’ sustainability accreditation.
The project by Hargreaves Foundry to cast 396 columns which form part of the development at One Pancras Square, King’s Cross London was completed in 2013.
Since casting work began back in June 2012, Hargreaves foundry has made a total of 394 columns at heights of 6m and 3.25m, the largest columns weighing in at 2.2 tonnes. Each features a unique, detailed weave design.
The columns are made from 100% recycled scrap iron largely from construction waste such as RSJs and steel profile offcuts; old brake discs and foundry ‘returns’, which is the excess produced by the foundry during the Pouring and fettling processes.
As batches of columns were completed, they were transported to London and lifted in by crane to form a colonnade around the building. They were then fixed into position on a concrete base by metal pins in resin and bolted against the concrete pillars to the top.
Hargreaves Chairman, Michael Hinchliffe said:
“Our company shares a Victorian heritage with the Kings Cross area as records show it was established before 1881. Today we are one of the few foundries left in the UK capable of producing the size of these castings and the volume required. As an iron founding company, we have supplied castings to the engineering and construction industries for approximately 130 years.”
You can check out a time lapse of a column being cast, as well as Hargreaves discussing the project below: