Name of Work: Geotechnical Investigation for Carrying out Final Location Survey for (i) New BG Railway Line Projects and Final Location Survey for construction of (ii) Doubling/ 3rd line/ 3rd & 4th line/ 4th line/ 5th line/ 6th line/Flyover line/ Byepass line over Eastern Railway
Sl. No.
Item Description
1
Exploratory drilling of boreholes down to required depth, drilling of 150mm dia. boreholes in all type of soils except hard rock & large boulders (boulder core more than 30cm) including refilling, reinstating surface and disposing off surplus material including use of mechanical rigs with power operated winches as well as percussion/chiseling tool for advancing through occasional seams of hard strata to be employed, where necessary including conducting SPT, collection of UD and DS sample as per codal provision and direction of Engineer-in-charge.0-40m
2
Exploratory drilling of Boreholes down to required depth, drilling of diameter boreholes in all type of soils except hard rock and large boulders (boulder core more than 30cm), including refilling, reinstating surface and disposing off surplus material including use of mechanical rigs with power operated winches as well as percussion / chiseling tool for advancing through occasional seams of hard strata to be employed where necessary in River bed area including standing/flowing water with all necessary arrangements including conducting SPT, collection of UD and DS sample as per codal provision and direction of Engineer-in-charge.0-40m
3
Drilling of NX size borehole (75mm dia.) in all types of hard rock and collection of rock core samples from boreholes and preserving boxes0-40m
4
Conducting in-situ full size Plate Load Test (PLT) at selected location as per IS:1888 including making loading arrangements & casting of RCC/cast in situ concrete footing as per codal provisions including excavation and refilling of trial pit. Plate size 30 cm x 30 cm
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