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SSDA 2016

AWARD Thames Tower Redevelopment, Reading Located in the heart of Reading town centre, the existing Thames Tower concrete office block has been given a new lease of life with an enlarged footprint at each floor level in conjunction with a five-storey steelframed extension above level 11. The original scheme concept was to demolish the existing concrete-framed structure and replace it with a new 25- storey high tower, which would have necessitated the requirement for new supporting/up-rated concrete foundations. However, through an innovative design proposal, the core of the existing structure was maintained and developed using a series of strengthening works throughout the height of the concrete frame, along with the provision of four additional steelframed office floors to increase the nett usable internal areas. This also provided huge ‘value-engineering’ savings to the scheme as the basic core of the structure was maintained and no amendments or enhancements of the existing concrete foundations were necessary. The refurbishment works included stripping the building back to its structural frame and the removal of the existing concrete cladding panels to all elevations, which were then replaced with a new terracotta tiling system to complement the local town centre surroundings. In order to accommodate the increased dead and imposed loads from the new five-storey extension between levels 11 to 16, it was necessary to strengthen the columns and floors of the existing concrete-framed structure. This was achieved by the following: i. The supply and installation of 15mm thick stiffening plates to the full width of the concrete columns between levels 6 and 11. The columns were initially ultrasonically scanned to avoid clashes with the steel reinforcing bars. Following the bespoke fabrication of each of the 282no individual stiffening plates, these were fixed to the columns by means of 14no resin anchor bolts and subsequently bonded to the concrete face across the full plate area using a special ‘fast-curing’ resin. Architect: dn-a Structural Engineer: Peter Brett Associates LLP Steelwork Contractor: Shipley Structures Ltd Main Contractor: Bowmer and Kirkland Ltd Client: Landid Property Holdings Ltd PROJECT TEAM


SSDA 2016
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