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Demolition
Heavy industrial demolition
Industrial buildings, bridges, power plants - regardless of
the type of building to be demolished, they all come with
their own, individual problems.
When old buildings are torn down, it is often unclear
which materials were used in them. Surprises in the form of
'problem waste' are common. Bridges are usually demolished
in very restricted spaces, with the roads running under them
having to be closed while the demolition work takes place.
High-quality, reliable tools are a prerequisite for ensuring
rapid and trouble-free demolition.
Job reports
| A Big Breakthrough in the Scottish Leith Docks |
 JL Plant Services Limited has quickly followed up on their early success after becoming Atlas Copco dealers.
JL Plant's latest sale is to Central Demolition, one of the largest demolition companies in Scotland.
Central Demolition started in 1993 with only 3 employees but has grown at such a rapid rate that they employ over 200 people. Currently Central Demolition is working on the development of Leith Docks, which are being turned into housing.
Part of Leith Docks includes a large old mill, which has old grain silos attached to the structure. To ensure that the structure came down safely and quickly Central Demolition has made their first purchase of Atlas Copco equipment.
Central Demolition have bought the Atlas Copco MB 1700 hydraulic hammer attached to a Hitachi 850 long reach excavator, which gives a total reach of 42m. This is necessary to reach into the silos to strip away the concrete structures to expose the steel.
Stuart Ray, Service Manager at Central Demolition said: "This is the first time that we have purchased Atlas Copco and we've been delighted with the results. We've had to work quickly, in a built up area, where noise levels are restricted, and Atlas have been excellent. We knew that Atlas bought Krupp a couple of years ago, and their products are simply the best in the market place."
JL Plant intend to make all of their hire fleet Atlas Copco over the next few years. General Manager Jason Easton said: "It is now just over a year since we took on the Atlas Copco dealership, and we are convinced that it was a great move for us."
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| Demolition work overlooking the Zürchersee lake |
 An old brewery in Wädenswil in Switzerland had to make way for 100 rental houses with an extraordinary view of the Zürichsee lake.
Hans Hürlimann AG in Cham with its staff of 90 employees is renowned for its activities in the field of underground structures, demolition, recycling and transport.
The assignment in Wädenswil was to demolish a major brewery and its appurtenances, with an expected volume of demolition waste of 18,000 m3. In addition to a tight time schedule and a building height of 23 metres, the specialists at Hans Hürlimann AG faced the challenge of pillars and sleepers of more than 1 metre thick.
They used an Atlas Copco CC 2100 U and a CC 4000 U. Thanks to the high crushing force of the CC jaws, the solid sleepers could be broken down effortlessly.
Owing to the high demolition capacity required (250 m3 a day), the time schedule for the demolition work had to be carefully adhered to. Once the concrete structures had been torn down, the CC 2100 U jaw arms were replaced by S versions, that is to say, steel cutting arms, to dismantle the steel casing and supports of the former brewery.
Recycling is an important theme at Hans Hürlimann AG. Some 90 % of the material underwent further sorting and recycling on site. A proportion of it was used in the substructure of the new development.
This assignment demonstrates how complicated the recycling of buildings and industrial plants can be and how important hydraulic demolition jaws are and will be in all phases of this work.
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New demolition cutter breaks Leipzig's "prefabs"
CC 3300 from Atlas Copco used in controlled reverse construction of several 11-story prefabricated concrete buildings. |
 The city of Leipzig is ridding itself of many of the prefabricated concrete housing settlements built extensively in the 1970s under the former East German regime. Architecturally bland and technically outdated, they can only be integrated in the modern cityscape and adapted to modern living standards at great expense. In many cases, complete refurbishment is simply not worth it. The only alternative is to pull them down.
Demolition contractors Ruppert GmbH & Co KG, Frickenhausen (www.ruppert-erdbau.de) recently tore down several 11-story housing blocks situated literally a stone's throw from a shopping center.
The precision demolition work on the roughly 40 meter high buildings called for expert excavator operation and special equipment. Ruppert used a Liebherr 974 with a 37 m demolition boom and an Atlas Copco CC 3300 U demolition cutter.
Weighing in at 3.3 metric tons, the cutter was fitted with universal jaws suitable both for breaking concrete and cutting through rebar.
Excavator operator Klaus Wiessmann: "We had to work with great care; one part of a facade falling in the wrong direction could have caused considerable damage to neighboring buildings. The cutter has a rotary drive for exact positioning, which is particularly important when working at such heights."
With a breaking force of 109 tons on the outer teeth and a cutting force of 400 tons on the blades, the CC 3300 has considerable power reserves making it ideal for light- to heavy-duty building demolition, industrial demolition, cutting steel girders (general structural steel), and for secondary breaking and material sorting.
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