Confirmatory Geotechnical Investigation for ERF Project near RAPS, Rawatbhata, at PO Anushakti via Kota, Rajasthan.

Amount

IMPORTANT NOTES: '1. Bidders are requested to visit the site before quoting the tender. '2. Police verification Certificate issued by Special Branch of Police is required for Contractor, Engineers, Supervisors and all the labour to work inside RAPPCOF, Rawat Bhata and the same shall be arranged by the bidder. '3. Drawing for Location and depth of boreholes will be issued to the successful bidders and location of bore holes to be marked by the bidders with the consultation of Engineer In Charge. '4. Onsite tests and laboratory tests samples , levels to be finalised with the consultation of Engineer In Charge. '5. Water shall be provided @1% of the gross value of work . '6. Electricity would be provided free of cost. '7. Latest IS codes shall be used.

(I) Field Tests on Rock/ Soils 'Mobilisation and demobilisation of suitable boring plant and all other allied equipments like Minimum 2 boring rigs or as required number of boring rigs to complete the job in time, survey equipments and all other insitu tests equipments and manpower required to complete the scope of this work.

Setting up of boring rig at each location, only once for each borehole location including moves between borehole position greater than 5 M locating and marking the location on the ground by actual survey, setting up all field test equipments and bringing all personal to the location, making area good for setting up rig etc. complete.

Boring vertically through all kinds of soils, weathered rock and soft rock, boulders, if any met during drilling with suitable and adequate equipment as required for the depth as measured below existing ground level. 'Note:(1) RQD of 10% and less will be considered as weathered/soft rock. (2) The soft or weathered rock underlying hard rock with thickness greater than 0.5 M will be considered as soft or weathered rock. (3) Core recovery of 20% and less also considered as soft rock at appropriate depth. 4) Bore holes , location, depth as specified in the drawing no. A&SED/ST/4021/00/PD/A1-002/R-A or as specified by Engineer incharge.

0 m to 10 m. From G.L

Drilling vertically through bedrock strata (Hard rock), using Nx size diamond bit, using double tube core barrel with suitable core catcher, including collection and logging of cores, placing them in approved wooden core boxes made up of 25mm thick planks with partitions of 12mm thick as per relevant IS with a coat of Anti Termite chemical in a proper sequence, numbering each core, noting the lithology, colour photographs (100X150mm size) of rock cores, locking arrangements, labeling and transporting the boxes to core store/laboratory as directed by EIC etc., all as per specifications for the following depths measured from existing ground level : 'Note:(1) RQD of 10% and less will be considered as weathered/soft rock. (2) The soft or weathered rock underlying hard rock with thickness greater than 0.5 M will be considered as soft or weathered rock. (3) Core recovery of 20% and less also considered as soft rock at appropriate depth. 4)Bore holes, location, depth as specified in the drawing no. A&SED/ST/4021/00/PD/A1-002/R-A or as specified by Engineer incharge.

0 m to 20 m. From G.L

20 m to 40 m. From G.L

40 m to 50 m from GL

Obtaining 90 mm diameter, 450 mm long undisturbed soil samples (UDS ) from boreholes WITH JARRING LINK in soil, soft and weathered rock and collecting packaging and labeling.

Conducting Standard Penetration Tests (SPT) in soil, soft and weathered rock and collecting, packaging and labelling disturbed soil/rock samples there from all as per IS:2131-1981(reaffirmed in 2002).

Conducting Standard Penetration Tests (SPT) as in Item No. 7 above but with part of the distrubed soil samples of medium stiff to hard cohesive soils to be coated with paraffin wax and sealed immediately on collection to completely retain all moisture within the sample, and part of the sample to be collected, packaged and sealed as in item No. 7 above.

Conducting SPT in rock with RQD greater than 10% and less than 25% all as per specifications, including replacement of SPT shoe by a new SPT shoe for each SPT as per specifications.

Collection of ground water samples for evaluation of ground water level and their variation as per IS:1892-1979(reaffirmed in 2002), IS:6935-1973(reaffirmed in 2012) from each borehole at specified depths (minimum 1 litre) including all provisions of sampling, packing, sealing and labeling as specified and including handling charges etc. all as per specifications.

Conducting In-situ Pump-in Permeability test by double packer cyclic method in weathered and hard rock of 3m test section upto maximum presssure of 10Kg/sq.cm,all as per IS: 5529 (Part 2)-2006 to evaluate permeability.Each unit of this item shall consist of a series of tests with pressure of three(3) equal increments to the maximum and three(3) equal decrements etc., as per specifications. The test is to be conducted in specified boreholes at specified depths as per drawing no. A&SED/ST/4021/00/PD/A1-002/R-A as per specification.

Conducting cross borehole test comprising of five boreholes, one source and four receiver bore holes (two in X-direction and two in Y-direction) for evaluation of Dynamic modulli ,dynamic Poisson's ratio,shear and compression wave velocity variation with depth . The test shall be conducted as per IS 13372(Part 2):1992 (reaffirmed in 2001),ASTM:D4428,ASTM:D7400 at specified location and depth as per drawing no. A&SED/ST/4021/00/PD/A2-001/R-A excluding cost of drilling of appropriate size bore holes required for test upto 50 m depth, which will be paid under relevant Item No.4 and 5 of this bill of quantity, PVC/Aluminum pipe casing, grouting and backfilling complete as per specifications and as directed by Engineer-in-charge.

Backfilling of boreholes with 1:1 cement : bentonite/ mud grout as per specification. Operating of this item is must for satisfactory completion of work.

Conducting Pressure meter test in NX size borehole with electronic probe for pressure up to 200 bar or failure which occures earlier and submitting the test data along with evaluating modulus of elasticity,shear modulus,Poisson's ratio,safe bearing pressure as per IS12955 (Part-2)1990 reaffirmed in 2001.The test has to be conducted in specified boreholes at specified depths as per drawing no. A&SED/ST/4021/00/PD/A1-002/R-A .

In soft rock & hard rock

Bursting of pressuremeter probe

Carrying Electrical resistivity test for evaluating ground water level and its variation along with subsurface stratification,ground profiling by Schlumberger four electrode method including submission of comprehensive report with interpreted results for layer thickness and resistivities in triplicate. The test is to be conducted as per IS:1892 -1979(Reaffirmed in 2002), IS:15736-2007(Reaffirmed in 2012) covering whole plan area of building upto depth of exploration as specified in drwaing no.- A&SED/ST/4021/00/PD/A2-001/R-A below existing ground level.

(II) Laboratory tests on Rock 'Carrying out petrographic examination of rock sample as per ASTM: C-295 for determination of core recovery, rock quality designation and rock mass rating in each borehole, for each rock stratum and submission of test result as directed by EIC.

Carrying out Unconfined compression strength (UCS) test on soaked& unsoaked samples for determination of Poisson's ratio,modulus of elasticity ,shear modulus as per IS:9221-1979(reaffirmed 2001)along with unconfined compressive strength,safe bearing pressure of rock sample as per IS: 9143-1979(reaffirmed2001)in each borehole BH at 3.0 m,6.0m,9.0m,12.0m,15.0m,18.0m,21.0m,24.0m,27.0m,30.0m and submission of test result as directed by EIC.

without saturation

with atleast 7 days saturation

Determination of water content, Porosity and density [saturated surface dry &wet condition], specific gravity by conducting Caliper,Buoyancy,Mercury Displacement techniques as per IS: 13030-1991(Reaffirmed 2001) . The test is to be conducted on one or more rock sample representative of each rocky stratum collected from each borehole.

Conducting Water absorption test as per IS: 1124-1974( Reaffirmed 2003) to evaluate water absorption . The test is to be conducted on one or more RS representative of each rocky stratum collected from each/alternate borehole.

Carrying out triaxial compression test for determination of triaxial compressive strength, cohesion and angle of internal friction as per IS:13047-1991(reaffirmed 2010) along with modulus of elasticity, stress-strain behavior as per ISRM- SM 1983 ,ASTM:D2664 in borehole BH at 3.5m,6.5m,9.5m,12.5m, 15.5m and submission of test result as directed by EIC.

Brazilian test on rock core as per IS:10082-1981 (Reaffirmed 2001)to evaluate tensile strength, in borehole BH- at 3.5m,6.5m,9.5m,12.5m,15.5m and submission of test result as directed by EIC.

Determination of Safe bearing pressure by conducting Point load strength test of rock sample as per IS:8764 - 1998 (reaffirmed 2008) & IS:10082 - 1981 (reaffirmed 2001) in each borehole BH at 3.0m,6.0m,9.0m,12.0m,15.0m, 18.0m,21.0m,24.0m,27.0m,30.0m and submission of test result as directed by EIC.

Carrying out Chemical analysis of sub soil samples to evaluate chemical characteristics of soil including pH,Sulphates(SO3&SO4),chloride and nitrate contents,organic matter, chemicals salinity and any other chemicals harmful to the foundation material as per IS: 2720 (Part 23,24,25,26 and 27) in an approved laboratory, complete as per specifications, including submission of test report . The test is to be conducted on one or more DS(disturbed sample ) &UDS(undisturbed sample) collected from each borehole or alternate&staggered boreholes and representative of each soil stratum as directed by the EIC.

(III) Report 'Preparation and submission of Three (3) hard & soft copies(on DVD) of Draft reports as specified followed by Five (5) hard copies of Final report of Geotechnical Investigations as detailed in specifications along with 6 soft copies of the same on the DVD. 'Note: 1. Final Report to be submitted shall include recommendations for the geotechnical investigation consisting of deliverables as per FORMAT which will be issued to the successful bidders. '2. Geotech Investigations for Soils and Rock will be carried out to evaluate the different type of test values as per FORMAT which will be issued to the successful bidders.

Shree Balaji Test House Pvt.Ltd.

Gaveshana Geosciences Pvt Ltd

Soiltech (India) Private Limited

SWAYIN AND ASSOCIATES

Fugro Geotech Pvt. Ltd.

BECQUEREL INDUSTRIES PVT. LTD.

bhaskram jyotish anusandhan kendra

Cengrs Geotechnia Pvt Ltd

AECS ENGINEERING & GEOTECHNICAL SERVICES PVT. LTD.