Kings Cross Commercial Office Building

Kings Cross, London


ProjectKings Cross R7
ContractorKier Construction
Install DateDecember 2016 to July 2017
Roof FinishInsulation with stone ballast
SupportedSafe Access/AHU Support/Chiller Support/High Level Pipe Support
Big FootCustom Safe Access/Bespoke Frames/Custom HD Frames/HD Cubes/Custom HD Supports

In June 2016 Big Foot Systems were asked to provide a complete solution for roof top support on a new commercial office building near Kings Cross Train station in central London.  



Several design meetings were attended with Kier Major Projects and Kier’s in-house consultants to find the best solution for the task at hand. It was decided to increase the complexity of the systems in order to combine many different supports and access ways. This was handled by the technical team and a solution was designed that fully met the needs of the customer.

After detailed surveys were completed, drawings and 3D assemblies were provided to the customer along with technical calculations to back these up.

The roof was split into 2 levels. Supports for level 9 included: a custom HD frame supporting an air handling unit weighing over 7800kg, custom access to service the AHU, integrated access and pipe support for 7 large volume water pipes at 4 meters above the roof level.

Supports for level 11 included: HD Cubes supporting 4 chillers weighing 5700kg each, 2  bespoke frames supporting air handling units weighing 6500kg each, a custom HD support with integrated access for a 15750kg generator and over 100m2 of custom safe access.

The deliveries were staggered over 6 months to allow all the different services to be coordinated with Big Foot Systems, with full assistance offered to aid the install by the site team.

Nathan Wood, Site Engineer said: “The size and complexity of this project proved to be a real challenge. To design a system with over 500 different parts to fit in an unusual space meant we had to be innovative and think outside our normal design practices to provide a solution that worked well. Also due to the time constraints, it was critical to provide these quickly and efficiently.”