SKILLED PERSONNEL

PROVEN PERFORMANCE

SATISFIED CLIENTS

SAFE WORKING ENVIRONMENT

INNOVATIVE ENGINEERING

COST EFFECTIVE FOUNDATION SOLUTIONS

 
   
 

Pier 4
Slurry Wall Foundation and Internal Bracing

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Pier 4

Mass Excavation Inside Braced Slurry Wall On Bostonís Waterfront

Location: Boston, MA
Owner: THC/UDR Seaport Development Venture
Completion Date: July, 2013
General Contractor: John Moriarty and Associates

Vital Statistics:
Project Value: $5,500,000.00
Wall Type: 30Ē Reinforced Concrete Wall
Wall Area: 39,700 S.F.
Max. Excavated Depth: 55í

Description:
The foundation for this residential tower on South Bostonís Fan Pier waterfront included a three level underground parking garage. Buried granite seawalls supported on timber piles, built in the 1870ís, were known to exist along the proposed foundation alignment. For this reason slurry wall was chosen for support of excavation and permanent perimeter wall. Granite blocks were removed by clamshell during slurry wall excavation. Two levels of internal bracing were installed to brace the slurry wall during mass excavation. Upon completion of mass excavation and mat slab construction, the lower level bracing system was removed and selected cross lot braces were removed from the upper level, in the building core area, and replaced with rakers to allow construction of the cast in place concrete building core.


Pier 4

Pier 4
Detail of Original Seawall Seawall Blocks Removed During Slurry Wall Excavation

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145 Island Street, Stoughton, MA 02072, 781-344-5700

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