Tender For Carrying Out Field Survey, Silt Data Collection & Analysis For Preparation Of Detailed Project Report For Bank Protection Work Along The Right Bank Of River Dharala/Singimari Within Jaridharala, Daribosh And Dhamaligachh Area Under Dinhata-I Bl, Dinhata-West Bengal
TDR : 50765548
Tender Notice
BOQ
Expired
Dinhata
West Bengal
Tender For Carrying Out Field Survey, Silt Data Collection & Analysis For Preparation Of Detailed Project Report For Bank Protection Work Along The Right Bank Of River Dharala/Singimari Within Jaridharala, Daribosh And Dhamaligachh Area Under Dinhata-I Bl
Name of Work :Carrying out field survey, silt data collection & analysis for preparation of Detailed Project Report for Bank protection work along the right bank of river Dharala/Singimari within JariDharala, Daribosh and Dhamaligachh area under Dinhata-I Block, P. S. Dinhata Dist. Cooch Behar (W.B)”.
Sl. No.
Item Description
1
Establishment of different types of Bench Mark of standard specifications including its painting, engraving etc complete including cost of manpower, material, labour, etc, as per directions of engineer-in-charge and drawing enclosed. (i) Musto Type Bench Mark.
2
stablishment of different types of Bench Mark of standard specifications including its painting, engraving etc complete including cost of manpower, material, labour, etc, as per directions of engineer-in-charge and drawing enclosed. (ii) Temporary Benchmark.
3
Double fly Leveling Survey for Control points. In Plain terrain
4
Longitudinal River Survey and preparation of maps in requisite scale to supply them in both soft and hard format with four copies complete including cost of manpower, labour, surveying instruments, camp equipment’s, transportation, etc. as per direction of engineer in-charge.i) By boat in moderate depth up to 10 km
5
Conducting detailed river cross-section survey and preparation of high-resolution Digital Elevation Model (DEM) with horizontal resolution of 0.30 m and vertical resolution of 0.50 m, including the following: Survey Coverage: Full width of braided river channel and adjoining floodplain, including a buffer zone of 150200 meters from both riverbanks to ensure continuity and stitching of DEMs. Cross-sections at 200-meter intervals (center-to-center) along the river alignment. Hydrographic Survey (Water Portion): Multi beam Echo Sounder (MBES) to be used where feasible based on depth and channel conditions. Single Beam Echo Sounder (SBES) as an alternative in shallow or inaccessible areas. Survey to be conducted using boats, with proper calibration and tidal correction as per standards.Topographic Survey (Land Portion): Use of Drone-based LiDAR and/or Differential GPS (DGPS) for areas that are dry or get submerged during monsoon. Ground control points (GCPs) to be established for geo referencing and accuracy. Postprocessing of bathymetric and topographic data to prepare high-resolution DEM of the surveyed area. DEM to be delivered in suitable GIS-compatible formats (e.g., GeoTIFF, LAS, or others as required) and as describe in scheudule of quantities of bid document
6
Direct shear Test 6 cm X 6 cm, Disturbed samples - 4 specimen/sample at various location along the river as directed by Engineer in charge.
7
Mechanical Analysis for grain size of soils (Sieve Analys)
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