Second challenge: Pile capacity
PPM began installation the project piling the last week in June
2018. Four test pile were installed with the restrike scheduled for
the following week. The restrike results at Abutment 1, Pier 2 and
Pier 3 resulted in pile capacities lower than what the county has
indicated as the minimum bearing capacity in the contract documents,
in most cases only achieving 60 percent of capacity.
The work was being conducted in limited work windows due
to the site being an environmentally sensitive slough. There was
limited area for laydown and operations. Both constraints were
high consideration when devising a solution to keep the project
on schedule and avoid a large financial impact to the project. PPM
worked with the county to develop the plan that entailed adding a
mid-plate in each pile in order to develop more capacity per pile
without adding pile length. However, due to the limited laydown,
this required PPM to install in production. PPM installed multiple
pile to the elevation where the mid-plate would be added – typically
about 50 percent depth – cut the pile at the desired mid-plate
location, installed the mid-plate and then spliced the production
pile to achieve the original pile length and drove the design elevation
to achieve the design capacity. Extensive additional PDA weld
inspection was added to the end of the process.
Modifying the existing piles prevented a reorder of piling, saving
cost and time.
Overall, the county expressed a very favorable opinion of the
crews and final delivery of the project. The partnership and innovation
of the project team helped the project to be completed
on schedule and without major negative financial impact while
achieving the design requirements. t
LAND: $500,000 TO $2 MILLION
PILE & SHORING INC.
BRIDGES - DRIVEN PILES - SHEET PILING - CAISSONS
COFFERDAMS - MARINE & DOCK FACILITIES
SOLDIER PILE & LAGGING - SLURRY & BARRIER WALLS
HELICAL PILES - MICROPILES - TIEBACKS
FERRARO PILE & SHORING INC. HAS STEADILY GROWN
INTO ONE OF NEW YORK STATE’S LARGEST PILING
AND GEOTECHNICAL CONTRACTORS SINCE ITS INCEPTION
IN 1990. WITH OVER 700 SUCCESSFULLY COMPLETED
PROJECTS, FERRARO HAS BUILT A REPUTATION
OF DELIVERING PROJECTS SAFELY, TO THE HIGHEST
QUALITY S STANDARDS, AND ON SCHEDULE.
13590 GENESEE ST,
ALDEN, NY 14004
GENERAL@FERRAROPS.COM
TEL: 716-937-4800
FAX: 716-937-0355
62 | ISSUE 3 2020 www.piledrivers.org
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