RESIDENTIAL CONSTRUCTION Ӏ SECTOR REPORT


– specifically Prefabricated Prefinished Volumetric Construction (PPVC).


The technique is designed


to increase productivity, as three-dimensional modules are completed with internal finishes, fixtures and fittings in off-site fabrication facilities before being delivered and installed on-site. With some PPVC elements weighing up to 25 tonnes strong cranes are required, with tower cranes being well-suited to this. Illustrating this is Singapore


contractor Debenho which has used the first Potain MCT 1005 tower crane in the country to construct a new PPVC housing development. The crane was purchased by


for the job it needed to call upon the specialist services of international crane rental, heavy lifting, and engineered transport specialist Sarens. To dismantle the tower crane


Sarens used one of its Liebherr LTM1500 mobile cranes which conducted the dismantling in seven separate loading and unloading procedures. The operation was preceded by a major pre-planning study so Sarens could determine exactly where the crane needed to be located for effective, safe and rapid dismantling without disrupting traffic. Thanks to this the crane was dismantled successfully in just ten hours. This included the move from its Cambridge, Ontario branch to the site, the deployment of the 276ft crane boom and the loading of the crane components, weighing approximately 15 tonnes.


READY-MADE A residential building technique that is currently enjoying a revival is prefabricated construction


20 CRANES TODAY Sarens


dismantling Oxford Builders’ tower crane


crane rental firm Manta Equipment and rented to Debenho. It is being used to place precast modules for the Yishun Central 1 (N9C3) housing development. According to Manitowoc, with


Debenho is using


the first Potain MCT 1005 in Singapore


its 50 tonne capacity, 80 metre jib and up to 1,070 metres of rope on the drum, it’s exactly the type of application the Potain MCT 1005 was designed for. For added versatility on-site


there’s also a choice of counterjibs


– from 15 to 20 metres. At the Yishun Central jobsite


the MCT 1005 will reach a final height under hook of 55 metres and has been configured with a jib length of 35 metres, supported by a 15 metre counterjib. This will allow it to lift and place all the heavy PPVC sections as the jib can support over 34 tonnes at almost 35 metres in this configuration. With an 80 metre jib, the MCT 1005 can handle 50 tonnes between 3.5 and 16.8 metres, and 6.5 tonnes at 80 metres.


MOBILITY MATTERS It’s not just tower cranes, however, being used for prefabricated residential construction. Mobile cranes are being used for prefab work, too.


VDL De Meeuw, a prefab specialist construction company in the Netherlands, bought its first Grove crane last year. One of its first jobs was on seven residential buildings, comprising 500 apartments, in NDW21, a growing area in the city of Nijmegen. VDL De Meeuw produces


industrially manufactured modules at its factory in Oirschot. These were transported to site where


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