RITES Ltd., a Public Sector Enterprise under the Ministry of Railways, has invited tender for the works of Services for carrying out “Topographic Survey with Drone/Unmanned Aerial System and other allied works for Karakavalasa-Boddavara section of ECoR in state of Andhra Pradesh.”
- Tender Reference Number: RITES/RCED/T/BVR-KVL/survey
- Estimated Cost of Work: INR 27.14 Lacs
- Time for Completion: 8 Months
- Document Download / Sale Start Date: 21-Sep-2021
- Document Download / Sale End Date: 01-Oct-2021
- Bid Submission Start Date: 21-Sep-2021
- Bid Submission End Date: 01-Oct-2021
- Bid Opening Date: 04-Oct-2021
Scope of Work:
- Conducting control Points survey using DGPS/Total Station and Auto level for the complete alignment by marking it on the permanent structures or any temporary location depending upon the site condition. Primary control Points to be marked at every 2.5 Km and Secondary control points at every 250-500m. Transferring of elevation to be done using Auto level.
- Conducting Aerial Topographical Survey with UAS (Unmanned Aerial System) (DRONE) to capture ground features and assets for laying of Doubling picking latitude & Longitude of the ROW in association with Railway officials. Survey will develop following deliverables with in accuracy of 5 CM RMSE.
- Autocad Drawing with Coordinates & Line of ROW Captured using RTK DGPS Survey.
- Topographical base map in Autocad format of 1:500 scale having all the natural & 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.
- Contours at an interval of 50 cm in DWG or DXF format.
- Digital Elevation Model of 1 m resolution in ASCH format and DWG format.
- 3cm resolution (GSD) Orthophoto in ECW or TIFF format which can be opened in CAD(6)Hard copy of topographical map in 3 sets.
- Conducting Final Location Survey (FLS) taking all safety precautions to ensure safety, using survey instruments like Total Stations, DGPS, Auto levels etc. and using MX Rail/Bentley software as per the scope, 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; including Topographical survey for 100 m on each side of centre line of existing Railway track or from the centre line of proposed alignment in case of deroute alignment, taking the longitudinal levels at intervals of 20m & at obligatory points and cross sectional levels at an interval of 5m (or less as decided by Engineer in Charge as per the terrain). (Extra width to be covered at some locations as directed by the Engineer in charge). This shall include staking of approved alignment with concrete Pillars (150 x 150 x 900 mm size with 450mm projected above ground level) at an interval of 100m and with wooden/concrete pegs (50 x 50 x 450mm size) at every 20m where track is away from the existing track.
- The concrete 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 on either side including submitting list of distance of centre line of proposed BG line from centre line of existing BG line at every 20m interval for doubling project.
- The survey control points established by Railways shall be used for the survey, else, an arbitrary coordinate system will be established which can be connected to main network by Railway later on.
- Providing and fixing cast-in-situ or precast M-25 concrete pillars of size 150 x 150 x 900 (300 x 300 x 900mm in case of TBM) with 450 mm / 300mm projected above ground level on straight and curves as per Scope of Work with Tenderers’ 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 setting out of curves at site indicating transition portion, apex point and crown of curve, beginning and end point of circular curves etc. Note-The pillars may be erected as directed by the Engineer in-charge, if decided these pillars shall work as boundary pillars, the distance of proposed center line of BG track shall be marked on these pillars.
- Preparation and submission of Detailed Longitudinal sections (L-Sections), Detailed Plans and Cross Sections, on MX Rail/ AutoCAD showing 5 km in each sheet at a scale of 1:5000 longitudinal and 1:500 laterally/vertical.
- The Longitudinal section shall have the details like km/chainages of the permanent features such as stations, level crossing, bridges (existing and proposed), FOBs, ROBs, RUBs tangent points of all curves (existing & Proposed), overhead crossing and other important physical features as decided by Engineer-in-charge, existing Rail level of BG track, ground level, existing formation level of BG line, proposed formation level, rail level, ground level at Toe of existing embankment, depth of cutting and height of bank with respect to ground level at toe of existing embankment gradient existing and proposed in BG, details of HFL/clearance/free board of existing bridges and proposed bridges, bed levels of each bridge.
- Preparation and submission of the Detailed Plan on MX Rail/Auto CAD showing the alignment of Railway line, curve, curve details, magnetic bearing, details of bridges (existing/proposed BG), Platforms at station, Railway land boundary, level crossings, all permanent/ temporary /physical structures within the Railway boundary as required for L section, locations of tangent points of curve, turnouts, center line of station and its name, overhead crossing, underground crossings, alignment of the Road in the approached, Road network parallel to Railway corridor, configuration Nallahs/ River/ water streams etc. Plotting and submission of the Cross section on MX Rail/AutoCAD in 50m corridor on doubling side of center line of existing track, taking the longitudinal levels at intervals of 20m & at obligatory points and cross-sectional levels at an interval of 3m.
- Rail levels & HFLs of all the bridges should be found out and indicated on the L-section.
- The L-section & Plan shall be prepared with details sufficient enough to prepare GADs of Bridges/Cross drainage works, in form confirming to prevalent practice on IR to the satisfaction of Engineer-in-charge and necessary changes/ modifications during course of approval will be done by the Tenderers.
- Preparing and submitting the Index Section & Plan showing all the existing field details/ ground features and proposals thereof similar to the detailed L-Section and plan but on scale 1 cm = 500 m Horizontal and suitable vertical scale in Hard Copy (6 Nos) as well as in Soft Copy and Two Copies on Polyester based tracing paper (100 to 150 Microns) complete as directed by Engineer-In-Charge.
- The charge to be paid to Survey of India for obtaining required contour maps will be paid by client/Railway. The map to be plotted on AutoCAD on scale 1cm = 50m and to be submitted on Hard Copy (6 Nos) along with Soft Copy and Two Copies on Polyester based tracing paper (100 to 150 Microns) as directed by Engineer-In-Charge.
- Further association for approval from Railways duly complying the observations made by them and incorporating all such modifications till its final approval. Required follow up with approving authorities including explaining them the project sheets will be needed from Tenderers.
- Photogrammetric 3D mapping of proposed alignment:
- To conduct Unmanned Aerial System (UAS) commonly known as Drone survey for Photogrammetric 3D mapping of proposed alignment of the doubling of Railway line. Detailed scope of the survey is as under.
- The broad scope of work involves topographic survey and preparation of Existing Land-Use (ELU) & Land-Cover (ELC) / topographic maps of rail alignment corridor (existing / proposed) (corridor width approximately 200m) using high-precision Drone/ UAV (Unmanned Aerial Vehicle Image/Photogrammetric approach) technology.
- It is the responsibility of the surveyor to obtain necessary permissions from the all concerned authorities. RITES will provide necessary letters for the same.
Tender documents may be downloaded from CPPP website https://etenders.gov.in/eprocure/app and from RITES website https://www.rites.com.
Source: RITES-Tender | Image Credit: Piyush goyal office- Twitter
