Four Liebherr luffing jib cranes build Thailand’s new Supreme Court

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Contractor Sino-Thai is using four Liebherr luffing jib cranes to build a new Supreme Court in the heart of Bangkok’s conservation area.

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Four Liebherr luffing jib cranes are being used during construction of Thailand’s new Supreme Court building, which is located in the centre of Bangkok’s Rattanakosin Island conservation area, near to the Grand Palace.

The new Supreme Court, along with an office for the Courts of Justice, is being built on the site of the earlier Supreme Court complex that had been built in phases, starting from the early 1940s and ending in 1963.

Tight restrictions are placed on any building projects within Rattanakosin, and the only type of tower crane allowed for the new Supreme Court was a luffing jib model, ensuring that the crane booms do not overfly the Sanam Luang ceremonial ground in front of the site, or the city moat behind the building.

The new Supreme Court building has been designed by the Faculty of Architecture at Chulalongkorn University, and is being constructed by Sino-Thai Engineering & Construction Pcl.

A traditional Thai design theme is being used for the new four-storey structure.

Two Liebherr 125 HC-L 6/12 Litronic cranes are being used on the project along with two 112 HC-L units.

Sino-Thai, one of Thailand’s largest engineering and construction conglomerates, purchased the cranes from its subsidiary company STIT Co Ltd, which is Liebherr’s distributor for Thailand.

“These four cranes were previously used by Sino-Thai on a four-storey hospital project in Bangkok, where the footprint of the building was large, and stringent no-overfly restrictions prevailed,” says Chupak Jirarojveerakul, Sino-Thai’s project manager at the Supreme Court.


“The Supreme Court has a long and narrow footprint, and we have adapted the configuration, deploying the four cranes at strategic points to ensure that all parts of the site are covered.”

“No other cranes are necessary,” he added.

The 125 HC-L has a maximum lift of 12 t and a 50 m jib that can be angled anywhere between 15 and 70 degrees and slew through 360 degrees under load at only 7 m slewing radius. The 112 HC-L has the same jib angles and slewing ability, with a 45 m jib that can also lift a maximum load of 12 t.

The four cranes are expected to be working on the site for a total of 12 months.

Rattanakosin Island is a conservation area that includes along with the Grand Palace and the Temple of the Emerald Buddha, many other buildings of great historical and artistic interest.

The district is where Bangkok was originally founded as the capital of the country in 1782, and the City Pillar Shrine, the first building to have been erected, is adjacent to the Supreme Court site.

The Supreme Court has great significance for Thais, as it was one of the first institutions to be formed after the dissolving of the absolute monarchy in 1932.




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