HEAVY LIFTING Ӏ SECTOR REPORT
oF THE WoRLD WEIGHT
The trend for heavier lifting is worldwide, while modular building methods are bringing heavy lifts to new areas. Julian Champkin reports.
Loads are getting heavier. Prefabricated modules are getting bigger. Lifts and moves that just a few years ago would have seemed out of the question are now, if not routine, at least possible and practicable, and are being performed around the world. As witness, see Chinese heavy lift company Sinotrans Heavy Lift’s recent heaviest-ever move of an entire building, a 7,500 tonne hotel, which they picked up, rotated a bit to the right, shifted 500 metres, twisted back to the
Enerpac’s SBL600 three- stage gantry, destined for Australia
left again, and then set down on new foundations (see Job of the Month, page 9 of our April issue). Accepted these are primarily moves, rather than lifts, and cranes per se are clearly not the only tool for such tasks; we are in the province of SPMTs, strand-jacks, gantries and the like. So given the heavier and more complex tasks in the pipeline it is not surprising that the heavy lift and move sector is developing improved versions of the tools of their trade. Take heavy lifting specialist
Enerpac as an example. It has a new hydraulic telescopic gantry: the Super Boom Lift (SBL) 600. It is a three-stage gantry with lifting capacity of 6000 kN and maximum lifting height of 10.6m. It has a special feature: a
foldable boom – which allows it to be transported easily on standard flatbed trucks. Enerpac has been putting its SBL600 through a rigorous testing regime ahead of shipping it to Australia. The regime was witnessed by a
representative of Lloyds as third- party proof of testing. The static load test was to certify the first stage lifting capacity of 6000 kN, with 5000 kN at the second stage, and 3700 kN at the third. Each gantry leg was subjected
to 125% of its load capacity at all three stages.
The static test was followed by a
Factory Acceptance Testing which included lifting with 110% of the safe working load of the SBL600 in the upper third stage to 10.6m and testing all gantry movements including the travel of the machine along skid track. Earlier type approval sideload
tests had ensured compliance with ASME B30.1, the industry standard that covers heavy lifting equipment such as hydraulic jacks, hydraulic gantries and strand jacks. The SBL600 is fitted with
40 CRANES TODAY
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