SOIL INVESTIGATION FOR PROVISION OF OTM ACCOMMODATION AND ALLIED FACILITIES INFRASTRUCTURE AT 26.20 ACRES LAND AT KARWAR UNDER GE(I) (CG) GOA

Amount

PART-I Mobilization & Demobilization

Making necessary arrangement Mobilization & Demobilization for of equipment tools &plant, personnel,etc. required for soil investigation and their removal after satisfatory completion of work, in land including slushy areas. Note:- The rate includes errecting the setup at first bore hole location.

Shifting of entire arrangemnt from one bore to another bore hole location and setting of boring/drilling rig as required.

PART-II FIELD TEST Boring 150 mm dia bore holes to any depth through followingtype of strata by using rotary drill method in terms of IS:1892.

a) Any type of soil

i) From GL upto 10 m depth

ii) Exceeding 10m depth and upto 30m depth

b) Soft Rock

i) Exceeding 10m depth and upto 30m depth

c) Hard Rock

i) At any depth

Collection of undisturbed soil sample (UDS) at 3.0m intervals or at any change of stratas in 100 mm bore thin walled tube including waxing, sealing, packing, and transporting to the lab.

Carrying out Standard Penetration Test (SPT) including collection of disturbed soil samples in bore holes at every 1.50 M depth or any change of strata and submit the report with all requisite data.

Collecting water samples from bore-holes

PART- III: LABORATORY TESTS as per IS: 1892

1) Conducting necessary (laboratory) tests on all collected samples which includes the determination of following i.e from [BOQ Item 3.02 to 3.20]

a) Atterberg limits

b) Natural moisture content

c) Wet and dry density

d) Soil / particle size using seive hydrometer analysis

e) Tri- axial shear test C & D

f) Shrinkage Limit

g) Consolidation test

h) Specific gravity test

j) Crushing strength of rocks samples, degree of weathering (CR value) and ROD of rock samples

k) Permeability test

l) Chemical analysis on Soil samples

m) Chemical analysis on Water samples

n) Standard and Modified Protocor's density test

o) Vane shear test

p) Salinity test

q) Grain size analysis, identification & classification of soil

r) Liquid limit, plastic limit, shrinkage limit, plasticity index

s) Shear Parameters (C- Phi Analysis)

t) Depth of Water Table below Ground Level Note: Payment shall be made as and when all testing reports of 5 copies(from Item 3.02 to 3.20 ) submitted to Engg-in-charge and verified by GE.

Part- IV: REPORT

a) Completing and analysis of laboratory and fields test results duly vetted by designated institute viz IIT/NIT/Govt Engg College duly signed by authorized signatory on behalf of institute on letter head of the institute and not from a professor/individual in his personel capacity with all recommendations for type of foundation with reporting works i.e from [BOQ item 4.02 to 4.08]

Calculate: (i) For open foundations, SBC at D- 1.5m, 2m, 2.5m & 3m from shear as well as settlement criteria. SBC value shall be calculated based on C-Phi analysis as wel as SPT value. For Calculations, formulae given in IS: 6403 shall be used.

ii) If pile foundation are required then depth of piles shall be mentioned and pile capacity in compression, uplift & lateral loads shall be given for 300, 400, 450, 500 dia for under reamed piles & for 450, 500, 550, 600, 650, 700, 750, 800 mm dia long piles.

iii) Recommendations regarding type of foundation to be adopted & net SBC/ pile capacities to be adopted shall be given.

iv) Recommendations shall be given regarding stability of soil and soil stabilization required, if any

v) Bore log details shall be as per Appx 'D' of IS: 1892. N values depth wise shall also be shown in bore log details

vi) As per IS: 1892 clause 3.6.5.3 drilling for 3m depth inside rock is essential to ensure that boulders or layers of cemented soil are not mistaken for rock. Report to be made accordingly.

vii) If hard soil with lesser than N Values as specified in Table- 1 of IS: 1893 (Part-1) 2016 is encountered, then evaluation of liquifection potential shall be assessed and remedial actions to be adopted shall be specified. Note: Payment shall be made as and when all testing reports of 5 copies(from Item 3.02 to 3.20 ) submitted to Engg-in-charge and verified by GE.

Details of Bldgs: Where boring to be done - With no. of bore(Approximate) (a) 19 Nos. low rise < 15 M height - 32 Nos

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