Improvement of Track geometry and track parameters by using Trimble GEDO Vorsys trolley system in Sealdah Division of Eastern Railway.

Item Breakup - B-NON SOR ITEMS

Pre Temping Measurements (a) Establishments Kilometre 600.00 of main GNSS (DGPS Base) Point & reference point establishment at 150 meter maximum interval along the track.

Pre measurement for tamping with total station & prism Gedo trolley measure and store Gauge, Cross elevation, Chainage, Shift and lift value at every 3m i.e. Every 5th sleeper interval along the track center line and co-ordinates of track center line at every 3m to be submitted with track geometry (per/km/round) SEALDAH DIVISION-ENGINEERING/EASTERN RLY

Construct target/Designs aligment with the good Kilometre 630.00 points of existing pre measurement profile in design software. To xeport data in ALC format with 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. (Extra quantity for length 30Km taken due to P- xing)

Post Temping Measurements (a) Post Tamping Kilometre 945.00 15049.36 measurement with total station & prism Gedo trolley measure and store Gauge, Cross elevation, Chainage, Shift and lift value at every 3m i.e. Every 5th sleeper interval along the track center line and coordinates of track center line at every 3m to be submitted with track geometry (per/km/round) (Extra quantity 50% taken dur to re- measurement for tamping)

Reporting(a) Report & plotting soft and hard Kilometre 600.00 copies of slew & uplift report at every 3m/5m i.e. every 5th. Sleeper interval compared with design Vs pre profile report of offset distance from track enter to OHE, neighbouring track center & platform point. Total 33616216.50