The Riverlight development is a striking array of six high-specification residential blocks varying from 12 to 20 storeys above ground level. Located on the riverfront in the Nine Elms district between Chelsea Bridge and Vauxhall Bridge in London’s South Bank, the six units contain over 750 apartments and retail units, and a landscaped ground level podium that covers 2 storey basement, providing space for over 400 cars.
Detail design delivers costs savings and ensures occupier comfort
Commissioned to carry out the detail design, Ramboll delivered significant cost savings through the efficient design of the reinforced concrete construction that incorporated external steel bracing features to support the large cantilevered floor slabs at each end of the building. Working closely with the architects and design team, Ramboll’s particular work on the basement and podium levels resulted in a reduced overall depth of the podium and basement that resulted in a significant reduction in contaminated ground removal from the site and enabled a saving of 300 tonnes of reinforcement.
Furthermore internal net space was maximized and material costs saved through rationalizing the column layout in addition to considerations into the dynamic performance under wind loading, ensuring occupier comfort, given the slender nature of the taller towers.
Integrated BIM modelling was used from the project’s outset, allowing for holistic reviews and coordination exercises at an early stage.
Innovative use of traditional construction techniques
The defining feature of all the buildings within the development, are their cantilevered ends. To achieve constructability of their unique shapes, traditional construction techniques were used in an innovative way, with the adoption of cantilevered shear walls. These were located towards the bottom of the building, providing temporary support for the upper floors at an early stage of construction that consequently enabled the adoption of a fast and efficient construction method and an expedited construction programme.
Ensuring a more pedestrian friendly environment, a number of vehicle calming measures and improvements to the street lighting were introduced. These alterations were facilitated with a smooth and timely approval, as part of the undertaking of the necessary design and applications for two sections 278s.