Tapertube piles on the jobsite
at
JFK airport
The
Port Authority of NY & NJ has approved the new Tapertubetm Pile
for use. They have stated
in a letter:
“We have reviewed the performance
of the Tapertube piling driven for the JFK-LRS (light rail system) pile
test program and the production and test piles driven for the British
Airways
project. The piling performed exceptionally well during both pile
driving and load testing and meets our requirements for tapered pile
applications.
We will be including the Tapertube pile as an acceptable alternative on
our future projects and will accept them for Tenant projects as well.”
Many engineers today are looking to drive piles harder in order to obtain higher loads. Contractors who must drive piles harder want piles that can take higher driving stresses without failure, a pile that can take higher driving stress is cost efficient and can be installed faster without the fear of buckling under the hammer.
A driven pile is a tested pile.
If
the pile reaches the required blow count and depth without failure you
can be reasonably confident in its performance. This is
especially
true with a tubular steel pile that has a closed end. You can
examine
the inside of the pile for possible damage and assure yourself of the
piles
integrity.
The trend today with driving equipment is moving to hydraulic hammers. These devices are, for the most part, much more efficient then steam, air or diesel hammers. Hydraulic hammers are reported to be better than 90% efficient in delivering energy to the pile. For this reason, the Tapertube pile is ideally suited to those hammers because the pile can be produced to take the required driving force.
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