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| 1 | Providing and transporting necessary and adequate plant and equipment to site within a lead of 50 km for taking trial bores for subsoil investigations including conducting an initial survey for establishing datum RLS and locations at trial bores including installation of the drilling equipment of the first bore location etc. complete as specified and directed |
| 2 | Shifting and locating the drilling equipment from one location to another within a lead of 500 m between successive locations including surveying the spot for establishing bore hole location, fixing ground levels with reference to datum RLs and observing groundwater level during boring operation etc. complete as specified and directed. |
| 3 | Taking trial bores upto 150 mm dia. for subsoil investigation through overburden and soil of all sorts including providing of temporary casing and cleaning the bottom of holes before conducting field tests or collecting samples at various depths including backfilling of boreholewith suitable material etc. complete as specified and directed. |
| 4 | a) Depth upto 6.0m below ground surface |
| 5 | b) Depth beyond 6.0 m upto 20.0 m below ground surface |
| 6 | Taking trial bores for subsoil investigation through rock using rotary drilling equipment with NX size diamond core drilling bits to obtain approximately 54 mm dia. rock cores including provision of wooden boxes for storage of cores, indexing the core samples at site of work and conveying the same to the headquarters of concerned office etc. complete as specified and directed. |
| 7 | a) Depth upto 10.0 m below ground surface |
| 8 | b) Depth beyond 10.0 m upto 20.00 m below ground surface |
| 9 | Conducting Standard penetration test as per specifications in soil at every 1.5 m in soil of bore holes and reporting the results in the approved format etc. complete as specified and directed. |
| 10 | Collecting disturbed samples of soil from bore holes as per specifications and delivering the same to the testing laboratory anywhere in Greater Mumbai as directed etc. complete as specified and directed. |
| 11 | a) In M.S. Black tube 50 mm dia. 150 mm. long including the cost of tube |
| 12 | b) In polythene bags by driving 100 mm size tube. |
| 13 | Collecting undisturbed samples of soil as per specifications at any depth in M.S. black tube 100 mm dia. 450 mm long, sealed at both ends with paraffin wax and delivering the same to the testing laboratory anywhere in Greater Mumbai etc. complete as specified and directed. |
| 14 | Collecting soil samples and sub-soil water samples in glass or plastic bottles I jars from trial bore holes and getting the same chemically analyzed in an approved laboratory for determination of sulphate and chloride contents and pH value etc. complete as specified and directed. |
| 15 | Taking trial pit in soil of all sorts excluding rock including shoring and strutting as required, collecting disturbed & undisturbed samples at 1 m intervals and trial depth, collecting water samples & transporting all soil & water sample to lab., visual inspection for description of strata / recording water table encountered, dewatering manually and refilling at end etc. complete as specified and directed. |
| 16 | a) Upto 2 mt. depth |
| 17 | b) 2 m to 4 m depth |
| 18 | Carrying out Plate Load Test complete with necessary and adequate Kentledge loads, equipments and instruments etc. as per specifications for determination of bearing capacity of soil etc. complete as specified and directed and submitting reports in duplicate. |
| 19 | Laboratory Tests |
| 20 | Natural moisture Content (NMC) of soil by Oven Drying method |
| 21 | Atterberg limits |
| 22 | Liquid limit |
| 23 | Plastic limit |
| 24 | Shrinkage limit |
| 25 | iii) Grain size analysis including grain size distribution curves in accordance with IS 2720 (part 4) |
| 26 | Sieve Analysis |
| 27 | Hydrometer Analysis |
| 28 | In-situ density of soil samples |
| 29 | Specific gravity |
| 30 | Unconfined compressive strength of rock samples, including determination of percentage of water absorption and density. |
| 31 | Triaxial shear compressive strength test giving full test resulting ( including mohr circle,stress-strain curve etc.)UU CU & CD any one |
| 32 | Preparation and submission of two (2) copies of Draft Reports followed by Five (5) copies of the final report of Geotechnical Investigation along with recommendaitons as detailed in specification, lab test results, Geotechnical interpratation, Design parameter & soil properties, Foundation recommendations including bearing capacity, finding strata, soil improvement measures if any, geotechincal profole for each case. The report shall be prepared in accordance with the specifications given . The approved report shall also be submitted in three computer compatible compact discs (CDs), etc complete as directed by Engineer-in-charge. |
