161 This landmark residential development situated at the top of Richmond Hill in the centre of Bournemouth was undertaken as a design/build contract with Taylor Woodrow Construction for client Taylor Woodrow Developments Ltd. The building consists of thirteen stories above ground plus a basement level. After careful consideration of the constraints imposed by the requirement to minimise the structural floor zones to keep within planning constraints, the irregular plan form of the building and the need to optimise the construction period, it was decided to use an insitu concrete frame up to 12th floor with structural steel framing for the penthouse. Careful attention was given to rationalising the reinforcement and concrete sections in order to simplify and speed the construction process. Piled foundations were provided using continuous flight auger with a contiguous piled retaining wall to the perimeter of the basement where boundary constraints prevented the use of a conventional concrete retaining wall. A final complication in the design of the foundation was the presence of a 1000mm diameter surface water sewer crossing the footprint of the building and the need to position piles to avoid surcharging the sewer with loads from the new construction. The analysis needed to take account of the transfer of load from out of line columns above and below the first floor slab together with the enforced irregular pile locations. The arrangement of these stepped supports resulted in varying degrees of support to the upper floor slabs. The use of ESA-Prima Win enabled the whole structure to be modelled to provide an accurate and true reflection of the overall structural behaviour. Our experienced Chartered Engineers used the software to interpret the resulting distribution of moments in floor slabs and vertical load in columns to provide economic steel reinforcement quantities. Accurate values for punching shear were available to ensure all loads were safely transferred to foundation level where an economic arrangement of piled foundations was established. Landmark Residential Building This landmark residential development situated at the top of Richmond Hill in the centre of Bournemouth was undertaken as a design/build contract with Taylor Woodrow Construction for client Taylor Woodrow Developments Ltd. Landmark Residential Building in Bournemouth
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