Soil Investigation for external services for Akash Missile system at AF Stn Pathankot

1. Determining SBC of soil by performing standard penetration test as per IS 2131 by boring 100mm dia bore hole up to 6 meter depth from NGL or refusal along with SPT at every change in stratum or at intervals of not more than 1.50 mtr depth whichever is earlier all as per IS 2131-1981(reaffired 1997). In case of gravely or boulder strata an open pit upto 3.00mtr depth alongwith dynamic cone penetration test as per IS-4968 upton 6 mtr or upto refusal whichever is earlier, collection of soil samples (disturbed or undisturbed), computation of bearing capacity complete with lab analysis as per relevant IS Codes such as :- (a) Atterberg's limits (IS 2720 part-5) (b) Wet and dry density. (c) Soil particle size distribution using sieve analysis/Hydrometer analysis. (d) Tri-axial shear test C-determination. (e) Shrinkage test. (f) Consolidation test. (g) Specific Gravity test. (h) Crushing strength of Rocks sample. (j) Permeability test. (k) Chemical analysis of ground water sample (Min 2 sample). (l) Free soil index. (m) Chemical analysis of soil. (n) Natural Moisture content.

2. Determining SBC of soil by performing standard penetration test as per IS 2131 by boring 100mm dia bore hole up to 10 mtr depth from NGL or refusal along with SPT at every change in stratum or at intervals of not more than 1.50 mtr depth whichever is earlier all as per IS 2131-1981(reaffired 1997). In case of gravely or boulder strata an open pit upto 3.00mtr depth alongwith dynamic cone penetration test as per IS-4968 upton 10 mtr or upto refusal whichever is earlier, collection of soil samples (disturbed or undisturbed), computation of bearing capacity complete with lab analysis as per relevant IS Codes such as :- (a) Atterberg's limits (IS 2720 part-5) (b) Wet and dry density. (c) Soil particle size distribution using sieve analysis/Hydrometer analysis. (d) Tri-axial shear test C-determination. (e) Shrinkage test. (f) Consolidation test. (g) Specific Gravity test. (h) Crushing strength of Rocks sample. (j) Permeability test. (k) Chemical analysis of ground water sample (Min 2 sample). (l) Free soil index. (m) Chemical analysis of soil. (n) Natural Moisture content.

3. Determination of CBR value of soil for laboratory test to evaluate the subgrade strength of road and pavement by collecting the sample from site as per IS 2720 Part 16-1987, complete all as specified.

4. Determination of CBR value of soil for field test to measures the relative strength of existing road use in pavement design as per IS 2720 Part 31 -1987 , complete all as specified.

5. Determination of modulus of subgrade reaction (K- value) of soil to evaluates the stiffness of sub base of soils as per IS 9214- 1979, complete all as specified. Note :- (i) Furnishing SBC report in pentuplicate including recording SBC for each location for the type of foundation and maintaining photographic record (Min three photographs per hole duly annoted as approved by Engr-in-Charge). (ii) Rate including all items of works necessary for carrying out complete soil exploration work collection of sample testing at laboratory and filed test result and submission of reports (five sets) (iii) Rate includes for submission of detailed recommendation for shallow foundation and bearing capacity of soil (SBC) at 1.5/2.0/3.0 m depth. Type of foundation and depths of footing be clearly specified. (iv) In case, very weak soil strata is encountered, recommendation about pile foundation i.e Type, Dia, depth of pile, safe load carrying capacity and socketing of pile into hard rock shall be clearly given in the report. Also measures for found improvement if required be included in the report . Safe bearing capacity shall be worked out based on N valve shear failure and settlement criteria. (v) Rate includes for submission of 3 copies of test report. (vi) RL of ground level/foundation level with respect to BM should be invariable mentioned in the soil investigation report. (vii) Recommendation as regards possibility of liquetaction of soil in case of saturated or partially saturated loose/ un-compacted sand soils. (viii) All work to be carried out in presence of executive i.e AGE/GE of GE (AF) Pathankot and videography of same is to be made part of Report.

SUVIDHI TESTING ENGINEERS

National Soil Testing and Research Laboratories