South East Central Railway Tender

Conducting Aerial Topographical Survey with DGPS integrated RTK/PPK UAS DRONE 1 based photogrammetric and Lidar to capture ground features and assets along the given alignment including Yards. Trolley/Loco Based Lidar System shall also be conducted to get uniform accuracy and data through out on the final approved alignment for Final Location Survey/DPR within an accuracy of 5cm RMSE. Survey will be done for width of around 100m. In mid section and around 250 m in yard. However final width requirement shall be as approved by Engineer-in-charge. Following output should be delivered: 1.Topographical base map in AutoCAD format of 1:500 scale having all the naturals & manmade features such as buildings, road, tracks, platforms, walls, yards boundaries, fences, signals, electrical mast, FOBs, LCs, RUB/ROBs etc. In .DWG or .DXF format. 2.Contours at an interval of 50 cm in DWG or DXF format. 3.Digital Elevation Model of 1m resolution in ASCII format and DWG format. 4.3cm resolution (GSD) Ortho-photo in ECW or TIFF format which can be opened in CAD. 5.List of Control points established onto the Ground using DGPS (every 2 km as primary control points on existing permanent Structures.) 6.RTK (every 250 m) along with their Latitude, Longitude and elevation. 7.NSSDA report showing accuracy achieved in comparison to control points established. 8.Digital Terrain Model showing accuracy achieved in comparison to control points established. 9. Preparation and supplying of Yard Plans (ESPs) of various Stations along the alignment showing proposed position of track and related structures based on concept plan on Auto Cad and submit in CD along with miniature A4 size yard diagram. 10.The levels shall be provided at every 25 M interval and each 5 M for cross section upto 30 M beyond toe/edge of bank/cutting of BG formation for cross section and must be shown in plan. 11.The Reduced level/Rail level shall be connected with standard bench mark. 12.Longitudinal section (L-Section)/Cross section and alignment plan will be prepared on computer in Auto CAD and submitted in soft copy as well as hard copy. 13.Index plan and index section in soft copy as well as hard copy. 14.Processed 3D point cloud in LAS format. The item also include staking of approved alignment with RCC Pillars (150 x 150x 900mm size with 300mm projected above ground level) at an interval of 500m, (with wooden pegs 50 x 50 x 450mm size) at every 20m where track is away from the existing track or where it is advised by Engineer-in-charge. (Cost of wooden pegs is inclusive). The RCC Pillars shall also be fixed on curves indicating transition portion, apex point, crown of curve, beginning and end point of circular curves, (5 locations for each curve) at major bridges two pillars one or either side, including submitting list of distance and coordinates of centre line of proposed BG line from centre line of existing BG line at every 25m interval. He shall also submit the list of existing infringement to the proposed BG alignment as per latest SOD for BG. The proforma for the same shall be approved by Engineer-in-charge. Payment Schedule for Item No.1 of Schedule : A. 70% payment shall be made on submission of the report. B. 30% payment shall be made on approval of the work by the Railways.

Providing and fixing cast-in-situ or precast M-25 RCC concrete centre-pillars of size 150 x 150 x 900mm with 300 mm projected above ground level on straight and curves as per Scope of Work & Technical Specifications with Contractors' own materials, tools and plants; including all leads and lifts and crossing of track etc.; including all taxes and royalties complete; including painting, 2 marking the pillars at site; including fixing of posts at curves indicating transition portion, apex point and crown of curve, beginning and end point of circular curves as per the setting of curve done in item no 1 etc. The rate includes the cost of all material including cantering, shuttering, cutting, binding, reinforcement, cement etc all inclusive. The exposed surfaces should be smooth and neatly finished. Main Reinforcement shall be 4 nos. of 8mm Ø bars and stirrups of 8mm Ø @ 200 mm c/c spacing. Note-The pillars may be erected as directed by the Engineer in-charge along proposed centre line of BG track and Chainages shall be marked on these pillars.

Casting, transporting and fixing precast RCC boundary pillars with M15 grade of size 350mm (bottom), 230mm (top), 1550mm height, 100mm thick or as per approved drawing/sketch 3 supplied including engraving the letters SECR and applying one coat of primer, and two coats of red enamel paint and painting the engraved letters with white paint including excavation of pit and fixing into ground up to 900 depth with contractors OP cement, steel, labour, tools, materials all lead and lift involved, curing etc., complete as per specifications and as directed by the Engineer-In-Charge.