3004/Q/01/2023-24/E3

Electrical Items :

Topographical survey work with following details:- (i) Level sheet of the area with block level at 05m x 05m intervals with 01m contour intervals. (ii) Existing structures including trees. (iii) Marking the layout of proposed buildings. (iv) L section at every Baffle wall including stop butt.

Soil investigation shall be carried out as per IS-1892 Bore hole dia shall be 150mm. Depth of bore shall be decided as per the soil condition and may be taken 15m or N value reaches 50, whichever is earlier.

Note : Under this test preferably following results to be provided:(i) Grain size analysis, identification & classification of soil:- (ii) Soil characteristics and Unit weight (bulk density), natural moisture content, liquid limit, plastic limit, shrinkage limit, plasticity index, specific gravity, (iii) Value of cohesion and angle of internal friction and Dry density, degree of saturation of soil through field Tests (iv) Free selling index & selling pressure if expansive soil is encountered. (v) Shear parameters (C-Φ analysis). (vi) Consolidation test & permeability test. (vii) Depth of water label below ground level. (viii) Presence of loose soil, if any and its depth. (ix) If weak soil with lesser N value as specification in table 1 of IS 1893 (part) 2016 is encountered then evaluation of liquefaction potential shall be assessed and remedial action to be adopted shall be specified. (x) SPT test shall be done at 1.0m interval. (xi) Recommendation for filling under floor and filling under protection including plinth protection. (xii) For open foundation, calculation of net SBC at 1.5m, 2m, 2.5m, 3.0m from sheet as well as settlement criteria. SBC values shall be calculated based on C-Φ analysis as well as SPT value. Test for C-Φ analysis will be carried out at site. For calculation formula given in IS 6403 shall be used. (xiii) If pile foundation are required the depth of pile shall be mentioned and pile capacity in compression, uplift & lateral load shall be given for 300, 400, 450, 500 dia for under reamed piles & 450, 500, 550, 600mm dia for long piles. (xiv) Recommendation regarding type of foundation to be adopted & net SBC/pile capacity to be adopted. Also recommendation shall be give regarding stability of soil stabilization required, if any. (xv) Recommended SBC at different depths of foundation seperately for the portions with and wothout basement. (xvi) Borehole position duly marked on plan and their distance form adjacent prominent reference points. Plan size of bldgs shall also be marked in the plan. Recommendation of footing at deferent depth i.e. 1.5, 2, 2.5, 3 & 3.5 M. (xvii) SBC and its calculation based on "n" value, shear strength and settlement criteria. Bore log detail shall be as per Appx 'D' of IS 1892 N values depth wise shall also be shown in bore log details. Bore log details shall be signed by soil consultant. Details of soil profile and bore logs also required. (xviii) Colour photograph on A4 size photo paper of the site with the locations of the boreholes duly flagged should be any reference structure and the identification of the same be marked. (xix) Modulus of sub grade reaction for Raft/Mat foundation. (xx) Depth of expansive soil and its properties, if any (xxi) Undisturbed soil sample shall be collected at 1.5m interval and at change of strata.

Determination K-value of soil at the location of stop butt of Baffle Range

Chemical analysis of soil and recommendation and type of cement to be used for RCC foundation.

Chemical analysis of ground water (water to obtained form bottom of bore hole).

National Soil Testing and Research Laboratories

Rishi Markandeshwar Engineering Consultant

GEO MEDIA ENGINEERING and CONSULTANCY SERVICES PRIVATE LIMITED

OBTUSE DESIGN STUDIO

Sumit Enterprises

B.R. Enterprises