Tender For Soil Investigation (Construction Of Deficient Smqs At Af Stn Dbg, darbhanga-Bihar

Tender For Soil Investigation (Construction Of Deficient Smqs At Af Stn Dbg; 1 Conducting soil investigation test at site as per relevant specification of IS-2131, IS-6403, IS-1498 & IS-2720 and submit the report as per following including shifting of equipment from one place to another place at any distance :- (A) Drillingof 150 mm diameter bore hole in all types of soils as per depth indicated below or refusal strata which ever is earlier as per instruction of the Eng-in-charge. Refusal defined as and when N value is 100 or more for 30 cm or part penetration. 2 (a) Conducting standard penetration test (SPT) in the bore holes at 1.00 m intervals in depth or every change of strata which ever is earlier as per IS:2131-1981or Condcuting dynamic cone penetration test (DCPT) in the bore holes at 1.00 m intervals in depth or every change of strate which ever is earlier as per IS:10042-1981 (Applicable for gravel, boulder deposit type of soil)(i)Depth of bore hole =15m 3 (b) Collecting distrubed soil sample from the locatiion of conducting SPT/DCPT. (c) Collecting undsturbed soil sample at an interval of 1.50 mor change of strata whichever occurs earlier.(d) Analysis of liquefaction potential for earthquake as per zone -V of IS:1893-2016 (part-1)(e) Recording the ground water table if observed upto exploration depth, as per IS:6395-1973 4 (f) Disturbed soil samples : Following lab test to be conducted on disturbed soil samples as considered necessary according to relevant specification IS-2720 and detailed result to be given in tabular form:-(i) Sieve analysis & Grain size distribution by Sieve analysis & hydrometer test(ii) Atterbergs limit as per IS:2720 Part-5-1985(iii) Natural moisture content(iv) Particle size analysis test(v) Bulk density/dry density 5 (g) Un disturbed soil samples : Following lab test to be conducted on Un disturbed soil samples as considered necessary according to relevant specification IS-2720 and detailed result to be given in tabular form:-(i) Natural moisture content(ii) Bulk density(iii) Specific gravity(iv) Free swell index and swelling properties of soil(v) Organic matter in soil if any(vi) Consolidation test (compressed index value)(vii) Triaxial compression test and determination of shear parameters (C & Ø test) as per relvant IS(viii) Harmful salt (complete investigation as already ref) 6 (B) Submission of Six copies of ink signed test reports. The report should include the following:(i) Detail description of field investigation soil classification and general nature of soil strata, water table, interpretation of test results, grain size distribution curves, compressive index curve, site plan etc stress-strain modulus (by stress-strain curves from triaxial tests), foundation analysis & recommendations with supporting calculations regarding foundation system, depth of foundation. 7 (ii) The SBC of the soil is required to be given as per following tables (Table A for Mat/Isolated and Table B for Pile). Calculation of bearing capacity will be governed generally as per IS:8009 Part-1-1976, IS:2720 Part-2-1980, IS:6403-1980, IS:1904-1986 & IS:1080-1985 and other relevant IS codes and detailed calculations duly showing the various soil parameters / indices shall be given in the soil report (Appx att as part of BOQ) 8 (iii) Plotting of a compiled sub-surface profile along the depth in both plan directions.(iv) Photographic record of geo-explorations as well as testing shall also form part of the report.(v) Every page of the Soil Investigation Report should have the Name of the Job for which Soil Investigation is being carried out. In case of multiple sites of a single Job are being investigated name of each site shall be put on each page of report pertaining to the site alongwith the name of the Job. (vi) The GE shall intimate the approximate type of construction, utilization and dimensions of proposed bldgs to the consultant, who based on geotechnical investigation, should recommend type of foundation (viz isolated/combined footing, raft, pile etc)(vii) In case of underground building basement construction, or if requirement of temporary/permanent deep excavation support measures during construction of building are envisaged necessary excavation support measures to be given by the consultant based on geotechnical investigations. 9 (C) Transportation of equipment / mobilization / Dematerialization of equipment etc for soil investigation shall be included in quoted rate.

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