typical semi and 52-inch trailer only had
one way in, and one way out, and had to
have traffic control for the entire 700-foot
access road.
Every morning, management from
IPS and WCW had material and production
meetings because not only did
the materials need to be delivered and
installed, but as all of this was happening,
two 200-tonne cranes were removing an
overhead walkway, and SaskEnergy/Suer
and Pollon were facilitating a high-pressure
gas line on the east side of the job site,
which reduced IPS’ working area to less
than approximately 35 percent of the work
site for the first two weeks. The working
hours, because of the noise generated by
the piledriving unit, needed to be modified
from a start time of 5 p.m. and a completion
time of 2 a.m. as submitted by IPS to
the university, to a start time of 4:30 p.m.
and completion time of 10 p.m. on weekdays
to facilitate not only the university’s
noise requirements during class hours, but
also the City of Saskatoon’s general noise
bylaws. Because of the major restrictions in
on-site working space, while the piledriving
and walkway removal commenced, the last
trucks of materials deliveries needed to be
unloaded using one of the two cranes.
Once the cranes were removed from
site, the east piling works were completed
first so that the solider pile and lagging
earth retention system could be installed
concurrently with the installation of the primary
structural piles to further save on manhours
on the schedule. Implementing half of
their two-fold solution, IPS predrilled each
pile prior to pile driving. Once the pile was
PROJECT SPOTLIGHT
installed, all open holes were backfilled with
the spoils of the pre-drilling and marked to
keep the site not only organized, but also
safe. As the piledriving progressed beyond
the halfway point, the existing walkway
IPS plotted that even on a tight
timeline with perfect drilling
conditions, this schedule was
unattainable for the original
drilled cast-in-place concrete
piles. IPS was awarded the
contract for the installation
of the driven pile and earth
retention alternates.
GZA Contractor Support Services
• High-Strain Dynamic Testing (PDCA Certified PDA Operators)
• Deep Foundation & Geotechnical Instrumentation
• Waterfront and Marine Structures
• Cross-hole Sonic Logging (CSL)
• Foundation and SOE Design
• Pile Integrity Testing (PIT)
• Static Pile Testing
• Rigging Analysis & Design
• Erection & Demolition Plans
• Temporary Work Trestle Design
• Wave Equation Analysis (WEAP)
• Structural Construction Engineering
• Vibration Monitoring & Pre- & Post-Construction Surveys
5 105
5000
2500
0
-2500
ms
kips
18 L/c
Force Msd
Force Cpt
5 105
5000
2500
0
-2500
ms
kips
18 L/c
Force Msd
Velocity Msd
20
15
10
5
0
kips/ft
1250
2500
3750
5000
kips
Shaft Resistance
Distribution
Pile Force
at Ru
0 1250 2500 3750 5000
0.000
0.400
0.800
1.200
1.600
Load (kips)
Displacement (in)
Pile Top
Bottom
Ru = 4683.1 kips
Rs = 468.0 kips
Rb = 4215.1 kips
Dy = 1.28 in
Dx = 1.35 in
GZA GeoEnvironmental Inc. CAPWAP(R) 2006-3
CAPWAP(R) 2006-3 Licensed to GZA GeoEnvironmental Inc.
Unit photo courtesy of PDI
GZA. Proactive by Design. Our Company Commitment.
28 Offices Nationwide www.gza.com
For more information, contact Brad Roberts bradford.roberts@gza.com
PILEDRIVER | 109
/www.gza.com
link
