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Brooklyn Marine Terminal 8
Bulkhead Rehabilitation
Port Authority of New York & New Jersey
Brooklyn, New York |
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Jet Grouting |
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Jet grouted columns are installed to provide
structural support to failing bulkhead. |
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Project Overview: |
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Layne GeoConstruction constructed a system of reinforced jet grout columns to provide soil stabilization and structural
support of a failing sheet pile bulkhead wall. Holes in the existing bulkhead system were patched with steel plates and
all joints were sealed with epoxy joint compound prior to jet grouting. Jet grouting was the method of choice for soil
improvement and structural support due to the small diameter drill string, which caused little or no impact to existing
bulkhead tie rods spaced every 9 feet.
A total of 142, 4-feet diameter double-fluid, reinforced jet grout columns were installed. Jet grout column length was
approximately 47 feet through loose to medium dense sand, and dense sand and gravel with frequent cobbles. Unconfined
compressive strength tests were performed on core samples resulting in jet grout element strengths greater than 1,500 psi.
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Value of Work Performed: |
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$800,000 |
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Project Duration: |
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2 months |
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Project Completion Date: |
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November 2001 |
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Project Reference: |
Project Owner & Engineer
Port Authority of New York & New Jersey
Frank Sandiford
Frank DeLassio
(718) 488-1945
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