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These types of non-penetrative support systems, in the form of an individual or group of frameworks with an overall footprint wider than the unit(s) they are supporting, afford a greater degree of
protection against plant tipping (‘the tipping moment’) in high winds. To determine the correct frame for an installation, Big Foot runs calculations that consider the cumulative weight of the supported unit(s) in conjunction with roof capability and whether the
installation is wind protected or not. These calculations establish the size of frame required to prevent plant tipping, and the number and size of foot bases in contact with the roof needed to ensure the cumulative weight is dispersed evenly over the roof area and to keep within workable loads of the roof build up (kn/m2).
In some projects, limited space, existing upstands and lightweight roofs may all require custom support solutions rather than a standard framework approach. With the aid of its technical
surveyors and by using both ANSYS FEA (Finite Element Analysis) and
Air handling units CFD (Computational Fluid
Dynamics) software, custom-made one-off solutions can be developed to meet the demanding
environment pr esent on some of today’s roofs.
The first step is to utilise the
calculations and 3D CAD software to produce a model of the support system. This allows small
amendments to be made, before production, to the support
structure prior to manufacture. Once manufactured, the
support systems are delivered flat packed to site. Quick and simple to install, the systems allow plant to be sited on supports in as little as 10 minutes.
Big Foot Systems supplied a complete solution for rooftop plant support on a new commercial office building near Kings Cross train station in central London
cial o ffice building As demand for new and
retrofitted AHU installations on flat roofs continues to spiral upwards, an easily installed system that will not damage a flat roof is well worthy of consideration. Not only do non-penetrative, repeatable support structures eliminate a whole range of problems
associated with concrete supports but they also drastically improve day-to-day health and safety, offering peace of mind.
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