The project involves the phased redevelopment of a housing estate dating from 1968-74 to provide 142 new homes. This is being achieved through the conversion of redundant garage space to provide disabled accessible units and airspace development, which will add two further storeys to 5 out of the 6 blocks on the estate (Windermere, Buttermere, Coniston, Derwent and Loweswater).
The new levels are formed using a combination of a hot-rolled steel frame and lightweight SFS construction. The loads from the roof extension are transferred into the existing structural elements via a hot-rolled steel grillage of beams and RC plinths. Extensive investigation works were carried out to confirm the form and condition of the structure, and the feasibility of the extensions. In the case of Coniston House, a new exoskeleton frame was designed to prevent part of the existing structure from becoming overloaded.
We have used a combination of Autodesk ROBOT 3D modelling software, TEDDS and hand calculations to develop efficient and practical designs for the primary frame and grillage. The drawings have been produced to BIM Level 1 standard using Autodesk REVIT.
The estate redevelopment commenced in 2020 with the garage conversions to Wentworth Mews and Windermere House. This was followed by the vertical extensions to the existing low-rise blocks. Both Windermere and Buttermere Houses are nearing completion with works to Coniston House ongoing. Derwent and Loweswater are expected to be released for redevelopment in the near future.
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