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SED c&a 30 cranes & access June July 2006
Second opinion pays dividends When Portasilo faced the challenge of installing two eight tonne silos over the top of two 85 metre chimney stacks at the Ferrybridge power station, it called in a major crane hire company to assess the job with its engineers. Due to the limited space available to position a crane close in, the hire company said that it could not be done, obliging the use of a much larger crane working at a long radius. The cost of using a much larger crane, possibly a big lattice boomed model, would have been far more than the client had banked on. Its engineers clearly felt that with very careful planning it might be possible to use a smaller telescopic crane. Crane Services/Nationwide crane hire, was called in for a second opinion. Its lift planning engineer, Andrew Clark, carried out a site evaluation and formulated the CAD drawings. The first impressions seemed to confirm the first crane hire company’s view, everything seemed to be against a smaller crane. The rigging space was very confined to say the least. The only position in which to place the crane looked impossible. In spite of this Clark was confident that the Liebherr LTM 1500-8.1 could do the job. He planned the lift on the company’s CAD system and using an 84 metre luffing jib on a 26 metre main boom length with 135 tonnes of counterweight installed. He figured that the lift could be completed with a maximum radius of 74 metres. With only millimetres to spare, boom deflection would be critical. In the end Clark was proved to be right and the lift worked perfectly to plan. Although literally with only millimetres to spare. Minimum headroom When Haas-Tek Services, a specialist machinery installation company, had to lift a 25 tonne ‘planing’ machine onto a high plinth, with very little headroom, it called in LGH Megalift to help. Two problems were highlighted by LGH, firstly the ‘planing’ machine had to be placed on a three metre high plinth and secondly there was a lack of available headroom within the premises, as the roof sloped significantly at one side of the building. c&a Following an engineering study it was decided that the machine would be installed from the side of the plinth, as the angle of the roof prevented an end on approach. Two lengths of rail track were placed running past either end of the plinth. As the machine was relatively narrow and because a second machine was situated in close proximity to the back of the plinth, only two of the lift cylinders from a 4400 jacking system were utilised. These cylinders were placed upon the rails and fitted with a 10 metre lifting beam, which had been offset upon the jacks in order to maximize the roof clearance. Once the jacking system had been put in place, the client positioned the machine alongside the plinth. The ‘planing’ machine was constructed with an upper control box section, containing all the electrical power LGH Megalift lowers the ‘planing’ machine onto the plinth. plant shutdown lifting The Liebherr LTM1500-8.1 with 84 metre luffing jib and 26.4 metre main boom. cables, which ran along the top of the machine. It was essential that contact with this section was avoided. So lifting slings were passed over the top flange of the lifting beam and the sharp edges were “softened” with large semi circular tubes. Once the rigging had been successfully attached, the machine was lifted and temporary supports introduced underneath. This enabled the slings to be readjusted to accommodate the tight headroom before the final lift took place. The Megalift jacks then hoisted the machine above the plinth, before tracking along the rails to complete the operation by placing the ‘planer’ in its final position on the plinth. ‘We were impressed with this solution which was selected in preference to other options for safety reasons and to minimise disruption to other site activities,’ said Jim Bell, managing director, Haas-Tek. June July 2006 cranes & access 31
Page 1: June July 2006 Vol. 8 issue 5 Fores
Page 5 and 6: cranes &access For users & buyers o
Page 7 and 8: Kranlyft enters the rental market K
Page 9 and 10: Hiab’s Moffett Engineering has si
Page 11 and 12: Scaffold replaced with mast climber
Page 13 and 14: Allan Access believe this is the fi
Page 15: News HIGHLIGHTS • • • • •
Page 18 and 19: New from Hitachi Sumitomo The New S
Page 20 and 21: lorry loaders c&a Available on the
Page 22 and 23: 22 cranes & access June July 2006
Page 25 and 26: The perfect spec We asked a number
Page 27 and 28: Something new something different E
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Page 33 and 34: Mondi has installed two 50 tonne cr
Page 35 and 36: Cranes Telescopic Handlers Lorry lo
Page 37: Lorry Loaders Manufacturer Producti
Page 41 and 42: Mast Climbers Manufacturer Producti
Page 43 and 44: Fish to the North, Sheep to the Sou
Page 45 and 46: SED The 40th SED show held in mid M
Page 47 and 48: June July 2006 cranes & access 47
Page 49 and 50: gives you mor more more specificati
Page 51 and 52: Broadband alarm provides better ale
Page 53 and 54: Lorry Loader Hire The object of the
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Page 57 and 58: Teupen’s rotating platform provid
Page 59 and 60: Versalift introduce tree platform V
Page 61: IPAF attended the SED construction
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Page 68 and 69: • USED EQUIPMENT • SPARE PARTS
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