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The Landmark Development, Canary Wharf, London
PERI’s RCS enables safe construction on Canary Wharf Apartments
In the heart of the financial district of Canary Wharf lays The Landmark development, a £22 million project of mixed use city apartments, restaurants, shops and social housing. The 31 storey West Tower and its 45 storey partner, the East Tower form the main part of the Landmark which will be become home to City types working at Canary Wharf. John Reddington Ltd. has the job of constructing the concrete frames and ground works and has chosen PERI’s expertise in formwork to assist them in this.
Due to the nature of the design of the building the core steps in at the 10th floor shrinking from 450 mm to 300 mm, as less structural concrete is required due to decreasing load higher up the building. This presented an interesting problem. Normally, the formwork would need to be dismantled and craned off to move into a new position to accommodate this change in wall thickness. Reddington however, are using PERI’s Rail Climbing System (RCS) which allows it to accommodate small changes in horizontal or vertical alignment, and so can move up continuously. The integral part in the RCS system is the climbing shoe, which attach the climbing formwork scaffold to the side of the core. Unlike rival systems, PERI’s shoes allow flexibility in two dimensions. This has proved vital for two aspects of the job. First, for the change in wall thickness where the system had to be tilted in and slide upwards to achieve the 150 mm step in. On the taller tower, there are two smaller steps of 75 mm. Second, the shoes have proved useful for attaching the protective panels for the following floors to the end of the building where pre-cast balconies are attached. The horizontal railings cannot be bolted into these balconies since they cannot hold the weight, so the rails are bolted back to the main structure and cantilevered out at an angle to put the horizontal over the balcony to avoid putting any weight on them. The shoe at the end of the rail has to pivot slightly so that the vertical screens remain vertical.
The protection panels are a vital part of PERI’s Rail Climbing System (RCS). These are anchored to the building by the climbing shoes which guide the panel up during the climbing process. With the RCS climbing protection panel, the slab edges on the upper floors are completely enclosed giving maximum protection to the work force from the elements. In addition to this, the portable hydraulic unit and ram allows the RCS to operate as a crane independent system thus reducing time and costs. Through the climbing rail, the scaffold unit is always connected to the building by means of the climbing shoe for the entire climbing procedure. Further more, it is impossible for the RCS climbing unit to ‘drift’ in strong winds and can be climbed safely and quickly at any time, in any weather.
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| PERI Systems In Use |
SKYDECK Aluminium Panel Slab Formwork
MULTIPROP Slab prop
VARIO GT 24 Girder Wall Formwork
TRIO
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Colin Judge
Site Supervisor
PERI’s Rail Climbing System has proved a great success. Both internal and external platforms of a full core are climbed in just 5 hours. PERI RCS has maintained productivity with a 5-day construction cycle whilst providing the highest levels of safety and security for the workforce.
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| Contractor: |
J. Reddington Ltd. |
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Field Service:
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PERI Ltd., United Kingdom
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PERI scope 1 | 2009
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