Big Foot Supplies Rooftop Solution to Complex London Project

Big Foot Supplies Rooftop Solution to Complex London Project

Big Foot Systems has supplied a complete solution for rooftop plant support on a new commercial office building near Kings Cross train station in central London. The split-level project used a range of non-penetrative frames from Big Foot Systems including Custom Safe Access systems, Bespoke Frames, Custom HD Frames, HD Cubes and Custom HD Supports to provide safe access and support air handling units, chillers and high level pipes.

At the start of the project, the Big Foot technical team held several meetings with the contractors Kier Construction to design a solution for this large and multifaceted project. After an initial consultation it was decided to increase the complexity of the systems being used in order to combine many different supports and access ways, so that the project 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 size and complexity of this project proved to be a real challenge” explained Nathan Wood, Site Engineer at Big Foot Systems. “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.”

On the project the roof was split into two levels, level 9 and level 11. The supports for level 9 included: a custom HD frame supporting an air handling unit (AHU) weighing over 7800kg, custom access to service the AHU, and integrated access and pipe support for seven large volume water pipes at 4m above the roof level. Meanwhile, supports for level 11 included: HD Cubes supporting four chillers weighing 5,700kg each, two bespoke frames supporting air handling units weighing 6,500kg each, a custom HD support with integrated access for a 15,750kg generator and over 100m² of custom safe access. The deliveries of the frames were staggered over six 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.

Big Foot Systems can design and manufacture complete one-off solutions that can be designed and fabricated specifically for the project requirements. This is ideal when the standard offer may not be suitable in meeting specific application requirements placed on today’s roofs. Limiting factors such as weak roof construction, space constraints, existing upstands/services obstruction and stacked/sectioned unit arrangements are typical scenarios that contribute to the need of detailing an appropriate custom support solution. Big Foot’s technical team then undertake a site survey and design custom systems, tailored specifically to meet individual design parameters.

The Big Foot Safe Access range is designed to allow a secure route for service engineers and other trades to gain access to plant and for managing the flow of other personnel, offering secure and easy access to roof-top services. HD Custom Frames are project specific non-penetrative support frames for large, heavy, irregular shaped or unevenly loaded plant whilst LD Custom Frames are ideal for supporting air conditioning and ventilation equipment.

The adjustable HD Cube provides a complete, efficient and robust solution for supporting heavier services and is an alternative to heavy, complex frameworks. Offering fast assembly and available in multiple configurations, HD Cube offers excellent load distribution making it ideal for the support of large packaged plant rooms, chillers and large air handling units.

Offering specifiers a comprehensive range of freestanding systems, Big Foot’s products are designed and manufactured by the company for a wide variety of applications, including HVAC, solar units and safe access equipment. The product portfolio provides complete, simple, safe and secure non-penetrative, prefabricated roof support systems negating a need for time consuming and costly penetrations through the roof.

Big Foot Systems’ products and systems are quick and easy to install ensuring project cost and time clarity, thus reducing the need for complex, time-consuming and expensive detailing. Offering improved roof aesthetics, Big Foot Systems provides engineered solutions that are innovative in design, robust and repeatable. Big Foot combines market leading products and services, which include system design and on-site support. Available to install in all weathers utilising familiar componentry, all systems are designed with safety, security and simplicity in mind. Finally, Big Foot Systems offers short manufacture and delivery lead times to help a project meet its schedule and stay within budget.

For further information on all products and services offered by Big Foot Systems email: or telephone 01323 844355.