September/October 2021 - 116

*
Installation of over 300,000 sq ft
(27,870 sq m) of waterproofing
* Excavation of over 125,000 cu yd
(95,600 cu m) of materials including
contaminated soils, and their trucking
and disposal
* Placement of over 34,500 cu yd
(26,400 cu m) of structural cast-inplace
concrete foundations, including
pressure slabs and grade beams
*
Installation of over 75,000 sq ft
(7,000 sq m) of foundation and flood
walls
E.E. Cruz also relocated critical
infrastructure, performing vibration
monitoring and analysis throughout
the contract duration during drilling
operations. The project team also
designed, fabricated and installed all of
the temporary structures required for
the project, inclusive to bridges,
platforms and ramps.
Site Conditions
The project site location posed challenges,
as it is in an area with significant
variances in geotechnical conditions,
while also being situated in very close
proximity to critical infrastructure. This
includes the Port Authority of New York
& New Jersey Lincoln Tunnels, active
Metropolitan Transportation Authority
New York City Transit Subway Tunnel,
and Con-Edison utilities - including
high pressure gas and power lines. The
expansion of the center's exhibition hall
and construction of the new truck
marshaling building spanned over two
tubes of the Lincoln Tunnel (and abuts
the third tube), with the tunnel transitioning
from a rectangular section to a
round section within the project limits.
Analysis and Design
To locate the tubes, the project team
utilized multiple methods, including:
5 ft (1.5 m) by 5 ft (1.5 m) by 25 ft (7.62 m)
deep timber lagged test pits to the top of
the tunnel roof; vibration monitors
installed inside the tunnels; and hand
excavation when within 3 ft (0.91 m) of
116 * DEEP FOUNDATIONS * SEPT/OCT 2021
Rebar placement for expansion foundations
Piles were placed on varied soil conditions

September/October 2021

Table of Contents for the Digital Edition of September/October 2021

Table of Contents
September/October 2021 - Intro
September/October 2021 - 1
September/October 2021 - 2
September/October 2021 - Table of Contents
September/October 2021 - 4
September/October 2021 - 5
September/October 2021 - 6
September/October 2021 - 7
September/October 2021 - 8
September/October 2021 - 9
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