This is basically study based project. Study of soil parameters have been performed. Soil sampling is done and after that some tests have been performed.

1. SOIL INVESTIGATION FOR THE
DESIGN OF METRO STATION
Submitted by -
Arif Mohd Siddiqui
Prashant Srivastava
Javed Ansari
Anand Pal

2. Content
● What is soil investigation ?
● Why soil investigation ?
● How to do soil investigation ?
● Conclusion.

3. What is Soil Investigation ?
❏ Exploration of Physiochemical properties of soil.
❏ To obtain information about soil conditions below the surface.
❏ Physical qualities of a site are evaluated in order to determine if the site is suitable
and safe for the proposed purpose.

4. Why Soil Investigation ?
❏ To classify the soil.
❏ To check the properties of soil.
❏ To check the water level beneath the ground.
❏ To check the site preferred for borrow pits.
❏ To compute settlement.
❏ To investigate safety for structure.

5. How to do Soil Investigation ?
❏ Sampling:- Expose a small area of
the soil to be tested. Level the
surface, about 300mm square in
area. Place the dolley over the top
of the core cutter and press the
core cutter into the soil mass using
the rammer. Stop the pressing
when about 15mm of the dolley
protrudes above the soil surface.

6. ❏ Soil Analysis:-
TEST DESCRIPTION APPARATUS
Liquid Limit Casagrande liquid limit apparatus.It
consists of a brass dish, handle, and
cam mounted on a hard rubber base.
Shrinkage Limit The shrinkage limit of soil is the
water content of the soil when the
water is just sufficient to fill all the
pores of the soil and the soil is just
saturated. The volume of the soil
does not decrease when the water
content is reduced below the
shrinkage limit

7. Optimum Moisture Content The water content at which a
soil can be compacted to the
maximum dry unit weight by a
given compactive effort. Also
called optimum water
content.
Dry Density Dry density of a soil is the
ratio of total dry mass of soil
to the total volume of soil.dry
density is related to the
degree of compaction of soil
mass.

8. Conclusion
A geotechnical investigation is an imperfect science filled with assumptions and
approximations. It begins with obtaining samples from boreholes at discrete locations
that will be either tested or inspected. The drilling of a borehole enables in situ testing
that obtains additional soil attributes.

9. THANK YOU