The Challenge The Mistral hypar is still one of our most popular Signature Structures and a very cost effective way of introducing shade as well as a sculptural feature into wide open spaces. This summer we installed two 7m Mistral tensile structures for Carillion at the newly built North Durham Academy to provide shelter over picnic areas for the students. As with most large scale building projects the main contractor has to juggle its sub-contractors in order to complete all areas on time and to budget. With tensile structures such as the 7m Mistral, the concrete foundations need to be installed fairly early on but the paving and other ground works cannot be completed until the canopy is finished. So keeping a close eye on the programme and liaising regularly with the Main Contractor’s s

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