Roof cladding-friendly, wind and snow load-resistant air handling and recooling systems on the flat roof of the Senckenberg Museum of Natural History Görlitz.
Massive systems were installed on stilts on the Museum of Natural History’s flat roof, including three air handling units weighing up to seven tonnes and three heat exchangers, each weighing three tonnes. In addition, the responsible parties planned the substructures for ventilation ducts and piping and installed convenient access points for maintenance work. They included stairs and crossings at the intersection points of the inspection routes to ensure safe and convenient access.
In addition, the roofer required more space under the units for roof inspections in subsequent years in accordance with DIN 18531-1. The long-term compressive strength of the roof insulation, considering the units’ weight, construction and ballast weight, snow load according to DIN EN 1991-1-3 and wind load according to DIN EN 1991-1-4 had to be ensured.
Because of these requirements, the Walraven team led by Andreas Strobel, Regional Sales Manager for Project Business in Saxony, opted for the flexible Walraven Yeti® mounting feet. Together with Walraven Maxx mounting profiles for heavy-duty applications and RapidStrut® mounting rail constructions, they ensure optimal load distribution of the systems. ‘For large and heavy installations, roof loading plays a vital role. The optimised load distribution properties of the Walraven Yeti® mounting feet reduce point loads. The flexibility of the mounting rail design also allows the Yeti® feet to be arranged, taking roof inlets into account, explains Strobel.
Elevated maintenance platforms with secure gratings and stair elements enable easy access to the technology and guarantee simple and safe maintenance. ‘The access points to the maintenance elements of flat-roof installations must meet certain standards, such as DIN EN 14122-2. They should be easy to walk on without risk of injury,’ says Strobel.
For lasting, reliable stability, Walraven experts provided support with snow and wind load calculations and appropriate ballasting recommendations. They also took on the design and dimensioning of the entire pipe support technology inside the building. They must meet specific standards, such as DIN EN 14122-2. They should be easy to walk on without risk of injury,’ says Strobel.
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