MARINE STRUCTURE - CMI Sheet Piling: The Experts in...

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770-933-816| [email protected] | cmilc.com 1 MARINE STRUCTURE BACKGROUND Lincoln Harbor is a large, upscale, mixed-use development located on the Hudson River near the Lincoln Tunnel. It is comprised of multiple piers, a marina and two residential and commercial buildings. The pier sections are supported by a system of hundreds of wooden piles. Over time, the structural integrity of the wooden pile system had been compromised due to damage from marine borer attacks. This type of “ship worm” damage is not uncommon in the NY/NJ waters. Recent environmental regulations have improved the water quality of the Hudson River so much so that marine organisms, especially those that eat wood, have begun to thrive. Settling and cracking of concrete structures including a parking lot was further evidence of the severe structural problem. PROJECT SCOPE The Hartz Group, which is one of the largest privately held real estate owners in the United States, retained the McLaren Engineering Group to evaluate the site. McLaren thoroughly analyzed loading capacities, soil conditions, wooden pile conditions, and damage to the concrete structure. After the study, it was determined the best remedy would be to use corrugated sheet piling driven around the entire perimeter of the piers. Then, underneath the piers, water would be pumped out and engineered fill would be pumped in to stabilize the structures. Resurfacing the concrete pier with composite sheet pile was the most environmentally friendly solution to protect the pier from scour. PERFORMANCE The use of steel sheet piling was disallowed by the New Jersey Department of Environmental Protection. Due to maintenance (sandblasting) and pollutant (epoxy coatings) concerns the NJDEP permitted only PVC or FRP sheet piling. To meet their engineered specifications, McLaren required UltraComposite™ Lincoln Harbor Pier 50 FRP to be installed. UC 50 is a 36” wide “box” shaped profile which greatly reduced the amount of interlocks on the face of the wall. The UC 50 is the widest synthetic sheet piling produced in the world and can be manufactured to any transportable length. The reduced interlocks and the sufficient effective permeability of UC 50 allowed for installation without costly he engineer’s solution would need to support large equipment, vehicles and heavy containers in the day to day operations of the port. The design included a 1300 linear foot cut-off wall made of 30 foot long UltraComposite™ FRP sheets. UltraComposite™ products are corrosion-resistant and do not interlock sealants. Given the complex nature of FRP products and the difficulty in manufacturing them to their design specifications, quality control is a critical component that ultimately determines long-term product performance. Quality at this level can only be delivered when the most stringent steps are followed using an ISO certified manufacturing process. CONSTRUCTION Trevcon Construction, a large local firm familiar with similar type projects drove the sheet piling. Two methods were used to drive the sheets depending on the position at the job site. First, and most often, a large excavator with bucket attachment. Secondly, a crane supported ICE vibratory hammer model 14. Average production was 100 feet per day. The sheets varied from 15’ to 30’ long and were driven into various soil conditions including silty sand, moist medium firm to dense clays with some gravels. WALL SPECIFICATION UC 50

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MARINE STRUCTURE

BACKGROUND

Lincoln Harbor is a large, upscale, mixed-use development

located on the Hudson River near the Lincoln Tunnel. It is

comprised of multiple piers, a marina and two residential and

commercial buildings. The pier sections are supported by a

system of hundreds of wooden piles. Over time, the structural

integrity of the wooden pile system had been compromised

due to damage from marine borer attacks. This type of “ship

worm” damage is not uncommon in the NY/NJ waters. Recent

environmental regulations have improved the water quality

of the Hudson River so much so that marine organisms,

especially those that eat wood, have begun to thrive. Settling

and cracking of concrete structures including a parking lot was

further evidence of the severe structural problem.

PROJECT SCOPE

The Hartz Group, which is one of the largest privately held

real estate owners in the United States, retained the McLaren

Engineering Group to evaluate the site. McLaren thoroughly

analyzed loading capacities, soil conditions, wooden pile

conditions, and damage to the concrete structure. After the

study, it was determined the best remedy would be to use

corrugated sheet piling driven around the entire perimeter of

the piers. Then, underneath the piers, water would be pumped

out and engineered fill would be pumped in to stabilize the

structures. Resurfacing the concrete pier with composite

sheet pile was the most environmentally friendly solution to

protect the pier from scour.

PERFORMANCE

The use of steel sheet piling was disallowed by the New Jersey

Department of Environmental Protection. Due to maintenance

(sandblasting) and pollutant (epoxy coatings) concerns the

NJDEP permitted only PVC or FRP sheet piling. To meet their

engineered specifications, McLaren required UltraComposite™

Lincoln Harbor Pier

50 FRP to be installed. UC 50 is a 36” wide “box” shaped

profile which greatly reduced the amount of interlocks on

the face of the wall. The UC 50 is the widest synthetic sheet

piling produced in the world and can be manufactured to any

transportable length. The reduced interlocks and the sufficient

effective permeability of UC 50 allowed for installation without

costly he engineer’s solution would need to support large

equipment, vehicles and heavy containers in the day to day

operations of the port. The design included a 1300 linear foot

cut-off wall made of 30 foot long UltraComposite™ FRP sheets.

UltraComposite™ products are corrosion-resistant and do not

interlock sealants. Given the complex nature of FRP products

and the difficulty in manufacturing them to their design

specifications, quality control is a critical component that

ultimately determines long-term product performance. Quality

at this level can only be delivered when the most stringent

steps are followed using an ISO certified manufacturing

process.

CONSTRUCTION

Trevcon Construction, a large local firm familiar with similar

type projects drove the sheet piling. Two methods were

used to drive the sheets depending on the position at the

job site. First, and most often, a large excavator with bucket

attachment. Secondly, a crane supported ICE vibratory hammer

model 14. Average production was 100 feet per day. The sheets

varied from 15’ to 30’ long and were driven into various soil

conditions including silty sand, moist medium firm to dense

clays with some gravels.

WALL SPECIFICATION

UC 50

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2 770-933-8166 | [email protected] | cmisheetpiling.com

Date:May 2010

Contractor:Trevcon Construction Co.

Owner: The Hartz Group

Engineers: McLaren Engineering Group

Depth

Length

Wall Area

22ft.

3,250ft.

90,000ft2

7m

991m

8361m2

Physical properties are defined by ASTM testing standards, The Aluminum Association Design Manual, The Naval Facilities Design Manual DM 7.2, and The US Army Corps of Engineers General Design Guide: PVC Sheet Pile and/or standard engineering practice. The values shown are nominal and may vary. The information found in this document is believed to be true and accurate. No warranties of any kind are made as to the suitability of any CMI product for particular applications or the results obtained there from. Crane Materials International is a Crane Building Products® company. CRANE MATERIALS INTERNATIONAL products are covered by one or more of the following U.S. Patents and International Patents: 4,674,921; 4,690,588; 5,292,208; 5,145,287; 6,000,883; 6,033,155;6,053,666; D420,154; 6,575,667; 7,059,807; 7,056,066; 7,025,539; 7,393,482; 5,503,503; 5,803,672; 6,231,271; 1,245,061CA; 7,914,237 and other patents pending. ©2005-2015 Crane Materials International. All Rights Reserved.

Crane Materials International (CMI) manufactures innovative products which provide value added sustainable solutions for the

construction and engineering communities.

The use of composite sheet piling was allowed by the New Jersey Department of Environmental Protection.

The sheets varied from 15’ to 30’ long and were driven into various soil conditions at an average of 100 feet per day.

UC 50 is a 36” wide “box” profile which greatly reduced the amount of interlocks on the face of the wall.

Lincoln Harbor is comprised of multiple piers, a marina and two residential and commercial buildings.