Tender For Aerial Topographical Survey Using Dgps Based Integrated Drone And Other Field Works For Final Location Survey For Koderma Paharpur Detour Line Of Proposed Sonnagar Andal Multi-Track (3Rd 4Th Line), Paschim Bardhaman-West Bengal
TDR : 45945458
Tender Notice
BOQ
Expired
Paschim Bardhaman
West Bengal
Tender For Aerial Topographical Survey Using Dgps Based Integrated Drone And Other Field Works For Final Location Survey For Koderma Paharpur Detour Line Of Proposed Sonnagar Andal Multi-Track (3Rd 4Th Line)
Name of Work:Aerial topographical Survey using DGPS based integrated drone and/or Lidar and other field worksfor Final Location Survey for New BG Line/ Doubling/ 3rd line/ 4th line, 5th line, 6th line/ flyover line/ bypass line over Eastern Railway-Package-III
Sl. No.
Item Description
1
Conducting Aerial TopographicalSurvey using DGPS based integratedDrone photogrammetry i.e.,PPK/RTK based Drone to capture essential ground features and assets and delivering the topographical information for 200m width corridor (100m each side from the centre line) within an accuracy of 5cm. GCP points to be identified and establishment at every 2km paint marked on the permanent structure and 1 hr DGPS observation of the same and at 250m interval along the alignment with RTK mode (2). TBM point\"s establishment at every 500 m with the help of digital level/Auto level with respect to Survey of India GTS Benchmark, preferably at permanent structures near road, canal/river crossing, (3). Collection of High-Resolution Aerial Imagery of minimum 3 cm GSD using survey grade DGPS integrated Drone i.e. PPK/RTK based Drone having on board dual GNSS system and calibrated camera of 20 MP UAV Aerial Photo Acquisition shall be done to cover the ROW. Suitable Overlapping:minimum 70% forward and 50% side overlap shall be maintained.Ensure Image Quality: Clear/sharp imagery with good light condition. Images must have XYZ co-ordinates and rotational information, sensor size, focal length as meta data. This information must also be made available in a text file. 4. Aero triangulation using the professional photogrammetry software which supports Stereo Capability to measure control points with highest precision and rigorous bundle block adjustment for reliable mathematicalcalculationand final results. This operation includes measuring and transferring all tie, check, and control points appearing on all photographs manually; and performing a least squares block adjustment. 5. 3D Topographical mapping -plan data Capture- All topographicalinformationincludingnatural&manmade features to be captured. All the topographical features including Rail, track centre line, Platform, signal,Electrical mast, Electrical Line crossing (Low and high tension tension wire) FOB,RUB, Station Building,Other buildings, In addition, the following details should be shown within the distance of 300m on either side of proposed alignment-River, Important Road, town/village, camping ground/rifle range etc, Reserve Park, Industrila units. The output is delivered in DWG format. 6. Generation of ortho-photos as per Railway Guidelines(Letter no. 2015/Track-1/24 (1 )/18/1/ dated 09.10.2017and as per the alignment plan given by RITES/Railwayson the Google earth to provide alignmentplan in km file format. Deliverable for Orthophoto:1.Raw images (jpg format) (2cm GSD) 2. File scaled and geo positioned ortho- photo tiles in jpg &sid compressed format of 2cm resolution and resampled at 5cm GSD. 3. Final scaled and geo positioned ortho tiles in jpg and Sid compressed format of 2cm resolution and resampled at 5cm GSD.4. Final scaled and geopositioned ortho-mosaic in JPG &Sid format for each 5km. 5. Map file compatible to CAD/GIS in SHP format duly linked with attributes of assets. 6. Quality control report for positional accuracy assessment coordinates to be picked for at least 5 well defined assets in 1 km length from google and same to be measured on the ortho- photo coordinates comparison.The difference between these values should be greater than equal to 3m. This item includes preparation of ortho-photos for yards also falling in the corridor of 300m or between Railway Boundary whichever is more. 3. The details are to be collected for a corridorof 200mon the finalized alignment. i.e. 100m on either side & for yards it should be 150m either side of proposed line or between Railway Boundary whichever is more. Work needs to be carried out as per technical specification of tender documents Topographical plan shall be prepared on 1:1000 scale. Detailed plan and L-section shall be prepared on 1:5000 (H) and 1:500 (V) scale.
2
Providing and fixing cast-in-situ or precast M-20 concrete pillars along the Railway alignment terms of reference & relevant provisions of Indian Railways Code for Engineering Department (1999, Third Reprint) with up to date correction Slips and as directed by the Engineer-in-charge on straight and curves as per Scope of Work & Technical Specifications with Contractors\" own materials, tools and plants; including all leads and lifts, transportation, making own service roads for leading of stones & materials and crossing track etc.; including all taxes and royalties complete; including painting, marking the pillars at site; The rate includes the cost of all material including centering, shuttering, cutting, binding, reinforcement and erection of stones etc., Main Reinforcement shall be 4 nos. of 8mm dia. bars and stirrups of 8mm dia. @ 200 mmc/c spacing, Location of concrete pillars 1) At every 500 mts along the Centre line of the approved Railway alignment using 1200x 100 x100 mm concrete pillar with 600 mm projection above the ground level duly embedding in CC(1:4:8) of 300x300x500mm size base concrete, including setting out of proposed curves at site indicating tangent points, apex point and crown of curve and approach of Major Bridges.4) The Chainage or KM & distance of proposed centre line of track shall be marked on these pillars. 5) Separate colouring preferably yellow colour for center line alignment pillars are to be painted for identification. 6) Center point direction has to be painted on alignment pillar with chainage are to be painted. 7) \"ECR\" has to be engraved on all pillars and painted with paint.as per instruction of site in charge. Similarly, boundary pillars shall be fixed on both side of the proposed boundary @50m using 1200x 100 x100 mm concrete pillar with 600 mm projection above the ground level duly embedding in CC(1:4:8) of 300x300x500mm size base concrete. Pillar shall be painted as per instruction of site incharge.
3
Staking and Fixing Alignment: Transferring the finalized alignment on ground using Total station/GPS at an interval of 20m (small wooden peg) and at 100m interval with large peg shall be fixed on ground. Tenderer shall fix up concrete pillar at every 500m in straight portion of alignment & in curve the concrete pillar should be fixed at every junction point of the straight and curve transition and circular curve etc (i.e. at T1, J1, J2 & T2). In addition to above pillars, the contractor shall be required to fix RCC pillar at every 50m interval. Alignment Pillars shall be fixed at both ends of each major bridge, important road crossing and other point of intersections. (The payment for supply & fixing of RCC pillars will be made separately under relevant item 1.1.2).
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