MSRDC
55 Flyover Scheme :
Dynamic Pile Testing was extensively
used for the above flyovers in Mumbai
after conducting many co-relation
studies between static & dynamic
tests to prove the reliability of
High Strain Dynamic Testing. This
resulted in significant savings in
time and early completion of many
flyover projects thus helping the
contractors and clients. Further the
problem of space availability, which
for flyovers in middle of the road
was solved resulting in greater working
space and more work efficiency for
the contractors. Testing was conducted
on piles ranging from 600mm to 1200mm
piles and capacity ranging from 180
tons to 1375 tons.
Delhi Metro Project :
Dynamic Pile Testing is being extensively
used for Delhi Metro Project where
it was used to ascertain capacity
of many suspect piles. Numerous co-relation
studies were conducted to evaluate
the test method & acceptability
of the test agency. The results were
successful and more than 30 tests
have been conducted till date. Testing
was conducted on 1500mm piles with
test loads upto 675 tons.
Baroda Ahmedabad Expressway Project
:
NHAI located 128 piles of 500mm that
were abandoned by the previous contractor
more than 10 years back. No technical
data like pile depth or capacity was
available. A combination of dynamic
and pile integrity tests was used
on the project site. Initially PIT
conducted on the piles reported pile
lengths about 20m. Borehole taken
adjacent to two such typical piles
confirmed the findings. Dynamic testing
on the pile helped establish its design
load. Static test was also conducted
by the client on the pile dynamically
tested for further confirmation. The
static and dynamic test results matched
well helping the client save lot of
time and money, since most of the
piles could be used in further construction
at no additional cost.
GCPTCL
Jetty at Dahej :
Dynamic Pile Testing was adopted at
one of the longest jetty in Gujarat
after co-relation with static testing
on a land pile. Conventional testing
on this jetty would have been extremely
difficult, time consuming and expensive.
Replacement of static testing by dynamic
testing significantly helped in early
completion of the project.
Integrity Testing was used to ascertain
length of piles for NHAI Expressway
Project in Baroda and for a building
in Mumbai, since no previous data
for the piles was available. In both
cases, confirmatory study in the form
of soil investigation or coring into
pile done to confirm the PIT test
results were successful helping the
designers to take decisions on acceptability
of pile foundations.
Routine PIT testing on 10 piles for
a project in Goa showed defect in
3 piles. Eventually all the 150 piles
were tested at the project and the
results showed defects in atleast
40 of them. Many results were confirmed
by excavation. Since the site was
critical chemical plant and helped
the client in avoiding major future
accident that could have been caused
due to pile foundation failures.
Integrity
Tests have also been routinely used
to evaluate possible defects like
cold joints, soil inclusions, or to
evaluate integrity in case of specific
concreting problems on site.
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