We have been appointed by Leighton Contractors (M) Sdn Bhd as the beam launching contractor to execute the launching of T-Beams at Span 45 and Span 46. The launching of beams at these two spans are the most difficult in terms of a limited working area available, very far working radius, longest beam (50 meter) and heaviest beam (130mt). Besides, we were required to launch the beam across the existing LRT line which increased the difficulty.
After our technical studies, our engineering department had produce the rigging studies with attached drawings and methods of statement for submission to KL Rapid for approval before work could commence. Our proposal was to use two (2) units 160 tonnes Truck Crane for loading the beam at the casting yard, two (2) units Prime Movers complete with 4 x 4 lines hydraulic trailer to transport the beams and one (1) unit of 300 tonnes Ringer Crane (Manitowoc 4100 S1 Ringer S3) and two (2) units of 300 tonnes Truck Crane to launch the beams into the final position. Our job included the supplying of all lifting tools, rigging team to assist in supervision and all rigging works during the launching operation. Photo below show the sequence of the lifting operation.