CCG-VR Section: - Pre & post tamping track measurement survey using Timble Gedo Vorsys trolley system on Through & Local lines under Sr DEN (S) section.

Item Breakup - A-NS Items.

Pre Tamping Measurements (a)Establishments of Per main GNSS ( DGPS Base) Point & refrence point Track establishment at 150 Meter maximum interval KM along the track.

(b)Pre Measurement for tamping with total station & Per prism Gedo trolley measure and store Gauge. Cross Track elevation, Chainage , shift and lift value at every KM 3m i.e Every 5th sleeper interval along the track centre line and coordinates of track centre line at very 3m to be submitted with track geometry (per/km/Round) MUMBAI CENTRAL DIVISION-ENGINEERING/WESTERN RLY

(c)Construct Target/ Designs alignment with the Per good points of existing pre measurment profile in Track desing software. To export data in ALC format with KM design alignment or measured reading in M/c and to provide track adjustment file with Ver extension and also to provide Geo Geometry file to provide text file with slew, uplift and gauge at every 3m i.e every 5th sleeper interval for tamping machine operator during reference.

Post Tamping Measurements (a)Post Tamping Per Measurements with total station & prism Gedo Track trolley measure and store Gauge. Cross elevation, KM Chainage , shift and lift value at every 3m i.e Every 5th sleeper interval along the track centre line and coordinates of track centre line at every 3m to be submitted with track geometry (per/km/Round)

Reporting (a)Report & plotting soft and hard copies Per of slew & uplift report at every 3m/ 5m i.e every 5th Track sleeper interval compared with design Vs pre profile KM report of offset distance from track entre to OHE, neighbouring track centre & platfrom point. Total 6396727.00