WBSDB/EE/CED-III/ NIQ-08(e)/2026-27/5

(i) Fixation of two numbers of ground control PCC cast in situ pillar having dimension 300 x 300 x 1000 mm. A steel plate should be fixed over top of pillar. The pillar should be 600 mm under ground with sufficient fixed attachment. (ii) Fixation of survey reference coordinate (X Y & Z) on this control pillar. X Y,Z coordinate should be made with hand held GPS. (iii) Topographical survey using electronic total station for project influence area. Survey should be done accurately so that a grid can be formed with 5m x 5m grid line. (iv) Conducting necessary Hydrographical survey as required for proposed concrete jetty as per direction of E-i.C. (v) Preparation of Topographical and Hydrographic survey drawing in Auto – CAD format. RAW survey data as excel file to be submitted. (vi) Submission of Topographical survey with contour drawing (colour in A3 paper) as hard copy and soft copy in pendrive.

Total A=

Mobilisation charges of all tools and plants along with accessories,materials, labour, supervision etc.at site of work- required in connection with boring and testing work including setting up boring rig and shifting to different borehole points etc.and also including withdrawal of the same from the site after completion of work, complete as per direction of Engineer-In- charge. (a) Detailed Investigation : Note: Rate for mobilisation & Demobilisation should be quoted considering average distance based on present Jetties Location.

Making boreholes of 150mm to 250mm dia by any standard method to 35 m. depth below ground level/bed level in all kinds of soil like clay, silt,sand,stiff clay,mixed soil etc. except rock (for the purpose of collecting disturbed and undisturbed soil samples, conducting standard penetration tests at suitable intervals etc.) including preparation and submission of bore log as per IRC;75and 78and CI. 2400 of specifications for Road and Bridge works published by IRC, and also including cost of labour, hire charges, of tools and plants complete as per direction of Engineer-In- charge. (Payment will be be made on the length driven into the ground). When casing of pipe is used to prevent collapse of bore(casing pipe to be finally withdrawn)

Depth 0m to 10m

Depth greater than 10m and upto 20m

Collecting Undisturbed soil sample of 10 cm dia and about 40 cm long at intervals of 3m, or at change of strata as required upto any depth, with the help of standard sampling tube including sealing the tube at both ends with Paraffin wax (25 mm-thick) numbering , labelling, packing etc. and also including cost of labour, hire charges of tools & plants complete as per direction of Engg-In-Charge for detailed investigation for every 3m

Collection of distrubed samples @1.50 m imterval from bore hole