Compact airport

摘要

A fleet of bomag asphalt rnrollers including ten pivot steered BW174 and BW184 models have compacted 81000 tonnes of asphalt at Zurich airport in Switzerland over the past six months in a CHF 56 million (€ 37 million) project to reconstruction the airport's '16/34' runway - the longest of its three. rnStrict operating hours and conditions were imposed on contractors so the airport could rnoperate normally between the hours of 05.30 and 23.30, which left just six hours each night to remove sections of the runway, lay pipes and install a new asphalt surface. rn"The aim was to completely remove a 23 m wide 3700 m long central concrete strip during night time hours, taking it up and relaying it in 70 m sections," said Ueli Stalder, construction engineer for contractors Walo Group.