Main Contractor: Carillion
Architect: Weedon Architects
Engineer: Meinhardt UK
The Triplets, also known as the Gasholders, are located on a site of three highly decorative, wrought iron Victorian Grade II listed gasometer structures, in the centre of the massive King’s Cross redevelopment project. The Triplets project forms part of the urbanisation of redundant marshalling yards and the subsequent construction of a substantial range of residential, commercial and buildings for public use.
The original gasometers have been dismantled and refurbished, and will be reassembled together into a “triplet” maintaining their individual elements but standing as one arrangement. The Triplets will have a large circular void between them with raised walkways linking them together.
Morrisroe was commissioned during the latter part of 2014 to undertake and complete the superstructure reinforced concrete construction of the three circular residential buildings, comprising 9, 10 and 12-storey blocks. One of the unusual features of the concrete work on this project are the beds for the 1,500mm high holding down bolts, used to secure the gas plinths that support the gas tower framework which are cast in round concrete beds. These anchor the framework of the gas towers to the ground floor concrete slabs. Additionally, over the three blocks Morrisroe is incorporating seven restraining angles.
With an accelerated construction programme of 32 weeks, subsequently shortened as result of external delays. Morrisroe addressed the shortened time scale by allocating additional skilled resources, peaking at 136 site workers to assist to meet the original programme delivery dates.