SECTOR REPORT Ӏ COMMERCIAL DEVELOPMENTS
from your new project opening. Speed is key. And the commercial sector is all about getting buildings up fast: techniques like tilt-up, steel erection, and prefabrication all contribute to this pace. Liebherr Nenzing’s LR 1400
SX squarely targets jobs where speed, rather than multiple lifting configurations, is key. The crawler is the biggest ever built by the Austrian factory: its German counterpart, Liebherr Ehingen, builds much bigger cranes with more configurations available, but these can take more time to transport and erect. Appropriately, the new crane
was first to put to work on precisely the sort of job where speed is key: the tilt up construction of a new film and TV studio, Electric Owl Studios, in Atlanta, Georgia. The work was carried out by local specialists, Full Tilt Crane Services. The company used on-site cast panels, measuring up to 34 metres high. “We bought the machine to
meet the needs of our customers: to lift larger and heavier pieces,” explains managing director Jason Richardson. On site casting and tilt up eliminates the need for costly transport, and offers customers flexibility. Full Tilt Crane Services aims to support contractors in the sector, like Martin Concrete Construction, who supplied the panels for this project, by getting to work fast and getting the job done quickly. Often, the company completes its role within a couple of weeks.
The ease of setup of the LR 1400 SX, along with its 400 tonne capacity, is a boon on a job like this. “The self-assembly system of the crane is very important to us,” says Richardson, “We don’t need an assist crane. Right now, we can fully assemble our LR 1400 SX in under 12 hours.”
The crane has been designed around this sort of use, with care
Ben Hur
Construction is using a 150 ton Link-Belt 238 HSL crawler to set 40-50 pieces of structural steel per day. When ‘in a nice rhythm’ it can safely set up to 80 pieces a day
taken to eliminate any source of delay. Platform and railings remain attached to the uppercarriage during transportation and only need to be folded down. Thanks to the self-assembly system, Liebherr says, the boom sections, carbody counterweight, crawlers and hoist winches can be easily assembled and disassembled without the need for an auxiliary crane. The crane can even hydraulically lift, lower, and secure the 150-tonne rear counterweight without assistance. The rear counterweight itself is modular and can be equipped with 5 or 10-tonne counterweight slabs, depending on requirements. Full Tilt was so happy with its
first crane, that it has now ordered a second. For taller buildings, where you
are not just assembling a big box for a customer to fill, fast steel erection is equally important. Stevenson Crane & Rigging supplied a 150USt
Link-Belt 238 HSL crawler to Ben Hur Construction for a project like this: a new seven storey hospital in Crown Point, Indiana, constructed using more than 4,600US tons of structural steel, supplied by Lenex Steel. Ben Hur Construction is aiming to complete the structural steel on the project in six months. “We are able to set 40-50 pieces of structural steel per day, and once we get in a nice rhythm we can safely set up to 80 pieces in a day,” says Frank Hiatt, senior project manager for Ben Hur Construction, Central Division-Indianapolis. Key to this pace of construction is the HSL 238, and Ben Hur’s careful site logistics. Steel pieces, and other building materials, are staged nearby to ensure steady work. The crane can then pick multiple steel elements at a time. “More speed and less distance to travel to place the Christmas
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