SCOPE OF WORKS :
This single-span Arch Pedestrian Bridge across the SMART tunnel at Jalan Imbi has a design weight of 150 metric tonnes and is 70 meters long. To speed up the erection duration, this arch bridge was preassembled in 2 sections on the ground. A 6-meter-high temporary tower was erected in the middle to support the arch bridge during erection. |
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Due to the limitation of the working area at the exit of SMART TUNNEL, our 300 tonnes Truck Crane was only able to extend the outrigger partially. As such, the lifting capacity of the crane was reduced and it was unable to lift the arch bridge. Therefore, we need to use one (1) unit 500 tonnes Truck Crane and one (1) unit 160 tonnes Truck Crane to lift the arch bridge and move close to the 300 tonnes Truck Crane within the working radius before lifting and placing it on top of the pier and temporary support. The other 2nd half section of the arch bridge was erected by one (1) unit 500 tonnes Truck Crane. The time taken to lift and place the arch bridge onto final position was 2 hours. All operations and monitoring were communicated by radio control by our competent rigging supervisor, who assisted our team of riggers. |
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