BMRCL erects composite steel girders over railway track near Rainbow Hospital

“The task posed important challenges owed to the deficiency of a work roadworthy and restricted entree done the railway underpass. Additionally, the roadworthy astatine this determination crosses the railway way astatine an angle, further limiting crane operations. Under mean circumstances, 2 400-500 MT cranes would beryllium deployed connected either side, necessitating a afloat roadworthy closure. However, to minimise postulation disruption, BMRCL utilized a azygous 700 MT crane and divided the 65-metre span into 3 sections – 2 14.5-metre segments connected either broadside and a cardinal 36-metre information implicit the railway track,” said a property merchandise issued by the BMRCL.

BMRCL successful its property connection further said that the recently erected railway span measures 65 metres successful length, with a full value of 575 MT, comprising 4 girders, each with a extent of 3.4 metres.

• Depth of each girder: 3.4 metres

To guarantee the harmless erection of the girders, some roadworthy and railway postulation were temporarily blocked. The Bengaluru postulation constabulary permitted night-time roadworthy closures from 9.00 p.m. to 6.00 am, diverting postulation onto the other carriageway with impermanent barricades. The South Western Railway granted a obstruction postulation artifact from 11.30 p.m. to 3.30 am, with railway engineers overseeing information measures.

The archetypal 36-metre girder was installed connected January 27, followed by 2 girders connected the nighttime of January 28, and the last girder connected January 29. “The cognition required precise alignment astatine a tallness of 14-15 metres with zero tolerance for deviation. A backup crane was kept connected standby for emergencies,” said a BMRCL source.

BMRCL stated that the remaining enactment – including the erection of the last 14.5-metre girder portion, platform slab, and parapet – volition beryllium completed successful the adjacent 2 months, aft which each roadworthy obstructions successful the country volition beryllium removed.