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MSRDC 55 Flyover Scheme
MSRDC 55 Flyover Scheme
PDA Test using winch & tripod
Delhi Metro Project
Delhi Metro Project
Baroda Ahmedabad Expressway Project
Baroda Ahmedabad Expressway Project
Pile Integrity Testing
Pile Integrity Testing
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Case Studies

 


Major Case Studies - Dynamic Pile Testing

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.

Case Studies - Pile Integrity Testing

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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