South East Central Railway Tender

Conducting photogrammetric survey using stereo satellite imagery data (CARTOS set or similar) as obtained from NRSC (national remote sensing centre) and processing the same using suitable GIS software for generation of Digital Elevation Model (DEM), orthophotos, topo-maps etc., to verify the doubling/new line alignment proposed in the PET survey by first identifying minimum 3 alternate viable routes and finallzatlon of most technical and economically alignment In consultation with railways duly adopting latest circular/manuals/code of railways with submission of detailed survey report along with abstract estimate as directed by the Engineer-in-charge. The scope of the work Includes 1). verifying and re-fixing alignment wherever necessary using wooded pillars duly suggesting 3 alternate viable routes and finalization of most economical one. The work shall be done as per detailed specifications given in the Stage-I of the tender document. 2). Submission 1 of reports with definite recommendations. 3). submission of records duly plotting the proposed alignment in toposheets as well as in Google Earth. 4). All other deliverables as mentioned in Stage-I. Note: 1. The various deliverables in this item such as DEM, ORTHO PHOTOS, DSM, PHOTOS/TOPOGRAPHICAL MAP to a scale of 1:5000 are purely for the purpose of finalization of alignment. However, the accurate DEM/ORTHO PHOTOS, DSM, PHOTOS/TOPOGRAPHICAL MAP shall be generated using drone/LIDAR Survey 2.This item is also applicable for sections where the PET survey has not being done. 3. All special conditions mentioned in the agreement particularly under Stage-I are applicable on this item. Payment schedule:- a. 60% payment shall be made on submission of the report. b. 20% payment shall be made on approval of the work by the Railways. c. 20% payment shall be made after submission of DPR to Railway board after approval by zonal railways. Note: The contractor will have to submit report as per item SI. No.1 within 45 days of issue of LOA for three alternate routes and start the subsequent works for Final Location Survey after obtaining approval regarding final alignment of the project.

Conducting Aerial Topographical Survey with DGPS integrated RTK/PPK UAS DRONE 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 250m in yard. However final width requirement shall be as approved by Engineer-in-charge. Following output should be delivered: 1.Topographical base map in Auto'CAD format of 1:500 scale having all the naturals & manmade features such as buildings, road, tracks, platforms, 2 walls, yards boundaries, fences, signals, electrical mast, FOBs, LCs, RUB/ROBs etc. In DWG or DXF format. 2. Contours at an interval of 50cm 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 2km as primary control points on existing permanent Structures) & RTK (every 250m) along with their Latitude, Longitude and elevation. 6.Hard copy of topographical map in 3 sets to be submitted by the agency. 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 submitted in CD along with miniature A4 size yard diagram. 10. The levels shall be provided at every 20m Interval and each 5m for cross section up-to 30m 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 AutoCAD 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. 15. Wooden pegs to be fixed along the alignment at every at every 50m. Payment Schedule:- (i) Final Location Survey- Submission of L-Section, cross section, index plan, index section and A4/A3 size yard diagram including signature of railway's officers : 60% (ii) Final approval of L- sections, Alignment plan, index section and index plan: 10% (iii) Submission of ESPs of station yards including signature of railway's officers: 15%. iv) Final approval of ESPs by Railway:15%.

Providing and fixing cast-in-situ or precast M-25 RCC concrete centre-pillars of size 450x150x150mm 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, marking the pillars at site; including fixing of posts at curves indicating transition 3 portion, apex point and crown of curve, beginning and end point of circular curves as per the setting of curve done in relevant item of schedule etc. The rate includes the cost of all material including centering, 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 @ 200 Imm c/c spacing, Note- The pillars may be erected a directed by the Engineer-in-charge along proposed centre line of BG track and chainages shall be marked on these pillars.