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Erection of Launching Gantry between Pier KD 24 and Pier KD 25 and installation of Segmental Box Girders
(SBGs) to form the elevated viaduct from Pier KD 26 till Pier KD 30 were progressing concurrently in elevated
package V2 of the SBK Line.
021
Operations
Review
Gamuda Berhad (29579-T)
Annual Report 2013
The elevated guideway for the SBK
Line will be using one of these three
methods, namely the Launching
Gantry (LG), Form Traveller (FT) and
Balanced Cantilever Segmental
Launching (BCSL).
The LG method will be used for the
construction of 1,343 spans (the
distance between two adjacent
piers) – taking up almost 90%
of the alignment’s length for the
elevated sections, while the FT and
BCSL methods will be used when
the viaduct crosses major roads
that require a span of more than 44
meters.
At peak productivity, some 17 to 20
LGs will be operating simultaneously
in both northern and southern
elevated sections.
Viaduct construction is actively ongoing along the Grand Saga Highway for elevated viaduct package V7, where Launching Gantry (in blue) is used to lift, align and fix
Segmental Box Girders (SBGs) (in white-coloured concrete) in place to form the permanent viaduct for the Sungai Buloh – Kajang Line. Each SBG weighs up to 50 tonnes.