PROVN OF GEOTECHNICAL, TOPOGRAPHICAL AND HYDROLOGICAL SURVEY FOR ESH AT MISSAMARI MIL STN UNDER GE MISSAMARI

Amount

Mobilisation of all necessary equipment & Manpower to the project site, dismantling of the same after completion field work from site & restoring the site to original condition.

M&L for 150mm dia Boring as per IS 1892, upto 20 m depth from existing ground level or upto refusal (whichever is earlier), undisturbed Soil samples at 1.0m interval, laboratory analysis of sample collected, as per IS 2720 & reporting the same in Six copies along with details of field investigation, laboratory analysis, recommendation, regarding the type of foundation, depth of footing & bearing capacity of soil as specified in IS 2131 & relevant IS codes. The report must contain photographic record of geo-exploration with detailed description of field investigation carried out, Soil classification & general nature of soil strata, water table level, interpretation of test results, grain size distribution curves, compressive index curves, site plans etc. The field & lab tests must include:- (a) Classification of Soil properties (b) Direct shear test (c) Tri-axial shear test (d) Consolidation test (e) Field test (f) Liquid limit (g) Plastic limit (h) SP Gravity (i) Rel density (j) Natural Moisture content (k) Settlement analysis to detemination of bearing capacity of soil to foundation. (m) Liquefaction analysis. The soil investigation report must be vetted by any IITs. All the six copies has to be ink signed.

Collection of soil sample at 1.0m interval upto 6m depth or upto refusal (Whichever is earlier) through boreholes for construction of road & embarkments. The necessary field & lab tests must be conducted to determine following parameters (a) Soaked CBR value at depth 0.6 m below subgrade. (b) Grain size analysis (c) Atterberg limits (d) Natural water content (e) Soil classification (f) Depth of water lable (g) Free swell index (h) Content organic matter (i) Permeability (j) SP Gravity (k) In Situ density (l) Dry density (m) Subgrade reaction. (n) Settlement analysis for determination of bearing capacity of soil at subgrade for high embankment. The report must contain photographic record of geo-exploration with detailed description of field investigation carried out soil classification & general nature of soil strata, water table level, interpretation of test results, grain size distribution curves, compressive index curves, site plans etc. Soil investigation report must include details of field investigation laboratory analysis, recommendation regarding type of pavement & desirable thickness of layers of pavement, height of embankment, type of soil to be used in embankment, Depth of foundation of retaining wall etc. Six copies of Soil investigation report have to be ink signed & duly vetted by any IIT.

Collection of hydrological data of Gabru river such as discharge, rainfall, high flood level, with recurrence interval for flood, catchment, management with due recommendation regarding height of embankment, suitable drainage system during high rainfall to avoid flooding of catchment, scouring depth to design depth of foundation of retaining wall or depth of cut-off walls. These data should be collected from stations of authorised state/central Govt data collection agency which are closer to Missamari. Six ink signed report must be vetted by any IITs.

Carrying out topographical survey work by using total station and other advance technique to cross verify the result. The contour survey includes collection of all important details on the field. All topographic details like sewage line network, invert level of (Kachche/Pakka) Nala, tanks, wells, house drains, railway, high tension line, electric poles, telephone poles, gas/water pipe line (Visible on ground), field bunds etc. Shall be collected Spot level shall be collected in 5mx5m grid intervals or near where undulation found. The report of this survey must recommend suitable method of drainage of storm water to Gabru river/any other discharge outlets. Six ink signed report must be vetted by any IITs. Condition:- 1. The firm to carryout this work should have latest ISO certification to quality under the category of consultancy. The firm's average turnover for last 3 yrs shouldn't be less then 1 cr. 2. Reports must be submitted in hard copies & soft copies. 3. Any data required during preparation of structural design must be provided by the firm.

Pranab Kumar Choudhury

Independent Consultants & Technocrates

Shree Balaji Test House Pvt. Ltd.

GEO DESIGNS AND RESEARCH PVT LTD