HARTMAN
ENGINEERING 1.716.759.2800 | www.hartmanengineering.com
4910 Ransom Road, Clarence, NY 14031-2141
Our firm has many years experience taking on the challenges of difficult design problems in the
specialized area of cofferdams, retaining walls, foundation support, and damaged structures
Project management
Due to the sheet pile coating delivery and
durations, APC had to begin driving concrete
piles first and then sheet and mooring
pile installation concurrently. Previous
projects at this location were constructed
by driving sheet piles first and concrete
piles second. This afforded those previous
projects the ability to use the sheet piles as
a seepage cutoff wall and allowed for excavation
to occur after the sheet piles were
installed. The traditional method allows
excavation to be completed after sheet pile
installation, which minimizes water intrusion
on the jobsite. Further, the traditional
method allows the crane to be sitting at a
higher elevation.
In order to meet the aggressive schedule
and sheet pile delivery time constraints,
APC’s approach required excavation to
begin prior to and during pile installation.
Excavated materials were used to build
an earthen dam to keep the excavation
from flooding. This approach allowed us
to begin concrete pile installation safely
while sheet piles were being coated. Once
we received sheet piles, APC began installing
sheet piles and mooring pile from
inside the excavation with our compact
and lighter crane concurrently along with
the concrete pile installation.
The challenge to this approach was
the fact that the traditional method of
driving sheets first was not an option due
to the lead time on the sheet coatings
which would have had a negative cost and
schedule impact to the project. Further,
this approach required a larger excavation
next to an existing slip with cranes
and equipment working in a 70-foot-wide
excavation verses a much smaller and
more manageable excavation that would
have been protected from the water by
the sheet bulkhead wall installation as
other, previous projects in this location
were constructed.
With a team approach with the general
contractor, APC effectively shortened
the overall project schedule through an
innovative approach for the Northern
Expansion Phase II, Slip C, Phase III
Bulkhead Project. Although APC’s nontraditional
approach used on this project
presented significant pile installation
challenges, the APC team successfully
overcame the project schedule restraints
and jobsite conditions to deliver a quality
product to the client while maintaining a
zero-incident project. t
PROJECT SPOTLIGHT
90 | EDITION 6 2019 www.piledrivers.org
/www.hartmanengineering.com
/www.piledrivers.org
