Name of Work: CONSULTANCY SERVICE FOR PROVN OF OTM ACCN (PH-I of THREE PHASES) AT LOHITPUR
Sl. No.
Item Description
1
Mobilization/Transportation, erection and dismantling of all required equipment at proposed site including deployment of shifted and suitable personal for effective soil investigation as direction-Job 1.
2
Carrying out soil Investigation as per relevant IS for the Name of work as mentioned above, complete all as specified and directed including the following:- (a) Boring 150mm dia hole at various locations as shown at Site byEngineer-in-Charge in any kind of soil but excluding rock, collection ofundisturbed sample at every 1.00m depth, Collection of disturbed sample atsuitable as required at site. Conducting standard penetration test as perrelevant IS as an interval of 1.50m.(i)Upto a depth of 15.00m
3
Carrying out soil Investigation as per relevant IS for the Name of work as mentioned above, complete all as specified and directed including the following:- (a) Boring 150mm dia hole at various locations as shown at Site byEngineer-in-Charge in any kind of soil but excluding rock, collection ofundisturbed sample at every 1.00m depth, Collection of disturbed sample atsuitable as required at site. Conducting standard penetration test as perrelevant IS as an interval of 1.50m. (i)Trail Pit of size (1.2x1.2x1.2)Note for Sr. Item No. 2 & 3 above:01 x Borehole (01 x Centre) + 01 No Trial Pit (Size 1.2m x 1.2m) 5.00m away from BH (Both Centrally placed)
4
Carrying out plate load test as per relevant IS for K value of the site as per location shown by the Engr in charge/GE
5
Note for Sr. Item No. 1 to 4 above:Carrying out the following laboratory tests on the soil samples as per IS Codes:- per B/H(a) (i) Sieve analysis and Hydrometer tests of identification andclassification ofsoil based on properties and grain size. (ii) Specific gravity of the soil. (iii) Studies of settlement characteristics of soil based onconsolidation tests and liquid and plastic limit. (iv) Stratification of soil for entire depth of bore log includingground water table location and other properties. Evaluation ofshear parameters of undisturbed soil samples by adopting directshear test. (v) Natural moisture content (NMC), Void Ratio and Porosity, Tri- Axialand direct shear test and unconfined compression test of undisturbedsamples and Bulk, submerged and Dry Density of the soil. (vi)Plate Load Test.(viii)Free Swelling Index(b) Compilation of SSI Report as per IS (viz. Filed and Laboratory testresults,Preparation of reports, Recommendation for different type offoundations, water table)with clear unambiguous recommendations for types of foundation for all structureswith bearingcapacity/pile capacities.(c) Therecommendations will be duly vetted by the vetting agency as per Notes.(d) Submission of all report booklets 05 (Five) copies with CD 01 (One) copy dulyindicating the following:- (i) Evaluation of safe bearing capacity of the soil with respect to shearfailure test and permissible settlement (Total and differential) alongwithrecommendation about type of foundation and minimum depth of foundation to be adopted. (ii) Evaluation of liquefaction potential. (iii) Modulus of subgrade reaction(K-Value) test. (For Runway,dispersal etc). Test to be performed according to IS 9214-1979, method of test will be as per clause 4.31 method 1 of IS 9214.Seating load will be for heavy pavements as per the clauses in IS code and all relevant corrections to be applied. No of tests for runway, dispersal. (iv) Specific suggestion if any soil treatment if required below foundation/ground floor/roads and type of treatment to be carried out. (v) Bore log diagram duly showing the different layers of strata metalongwith their depths.
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(e). Following points to be included in the SSI report (not comprehensive, appropriate data/information may be added as per requirement:- (i) Introduction (ii) Objection of the geotechnical investigations (iii)Details of the proposed structures (iv) Site conditions. (v) Field investigations (vi) Laboratory test results (vii) Soil Profile (viii) Allowable bearing capacity-based on SPT ‘N’ values, ‘c-Ø’ value and permissible settlement with sample calculations. Complete calculations will be submitted in soft copy in the same CD containing the SSI Report. (ix) Liquefaction analysis with calculations. (x) Foundation alternatives duly tabulated building wise. (xi) Clear recommendations duly vetted by IIT/NIT/Govt Engg College. A table showing building name, BH No, depth & coordinates of the BH corrected SPT ‘N’ values and the recommended SBC and clear recommendation for depth and typeof foundation including any soil improvement matching with the site planshould form part of the recommendations. (xii) Annexure including bore logs, c- Ø and indicated for BHs, Likelihood of water-logging at site must also bechecked.(f). If the soil/water has high (more than permissible) contents of sulphate, chlorides or any other deleterious material, the same should be brought out and appropriate recommendation be offered.The required chemical analysis needs to be undertaken for the same.(g). All relevant IS code on the subject should be followed and mentioned at appropriate places.(h). Signed copy to be fwd.(j) Location of Soil investigation as marked on Site Plan: Watch Tower-17 Nos, WP Shed-01 No, ESH-02 Nos, Igloo-10 Nos, Sub station Building-01 No, RA & EA Shed-02 Nos, Night Guard -02 Nos, In & Out building- 01 No and Amenity Room-01 No.
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