At 105 foot wide, the bridge, known local y as the Pepper Pot bridge because of it’s the shape of its towers, carries both rail and road connections. For the reconstruction, Capco Crane has built a 40ft wide double girder gantry crane. This features two Street 7.5 tonne ZX hoists to provide greater stability when handling large and ungainly structural elements. In addition, an integral generator installed on a cantilever to the crane provides independent power and eliminates the need for a convention power supply. Due to structural limitations and to ensure safety, the hoists, whether used independently or in tandem, will be limited to six tonne lifts with a load summation device preventing excess load.
The scheme was originally planned to last three and a half years with operations phased to permit continuing traffic flow. Work entails structural repair in position to the large steel arches on the eleven spans between granite piers and bridge abutments, as well as the repair or replacement of spandrels, columns, stringers, floor beams and the concrete deck. Finally, the bridge will be refitted with original design cast iron pedestrian railings and fascias and the four characteristic pepper-pot towers, by which the bridge is locally identified, will be re-built.
To ensure that the bridge can be restored and brought into full service again as quickly as possible, the main contractor has ordered a second crane for urgent delivery in the late summer to speed construction. To meet the contractor’s delivery needs the, outdoor specification, hoist units were manufactured by Street Crane in under two weeks.
In the UK Street Crane is best known as a supplier of whole cranes to manufacturers and the construction industry. Ten Street cranes were used in Crossrail projects including the Oxford Road crane used for deep excavation and construction. Internationally the company’s hoists are available via partnerships with over 60 distributors, often crane builders such as Capco Crane and Hoist, serving a local market. Over 70 percent of Street’s turnover comes from such exports and the company is currently building a new hoist factory to support further export growth.
Chris Lindley-Smith, Tel. +44 (0)1298 812456 Fax. +44 (0)1298 814 945
E-mail: firstname.lastname@example.org Web: http://www.streetcrane.co.uk
Street Crane Company, Chapel-en-le-
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