Mixed-Use
Mandarin Oriental Hotel
Client: CWB/Suffolk Construction
Location: Boylston Street, Boston
Schedule: 2005-2008
Contract Value: $10 million
J. Derenzo Company’s work was completed along busy Boylston Street within the Prudential complex.
The foundation system for the new hotel was excavated through an existing parking garage and pile caps,
requiring the removal of more than 7,000 cubic yards of concrete. Soil mix walls were constructed to a
depth of 60 feet below street level, with an advanced bracing system needed to support Boylston Street
during construction. J. Derenzo Company developed an innovative design for the bracing system, which
saved our client significant money and time. J. Derenzo Company excavated and provided off-site disposal
of more than 7,000 cubic yards of concrete and more than 34,000 tons of contaminated soils from the
project. The work included the following:
- Saw-cutting and removal of existing slab inside Prudential tower parking garage;
- Furnishing and installing a soil mix wall along Boylston Street;
- Bulk excavation of about 24,000 cubic yards for the underground parking structure;
- Transportation and disposal of 34,000 tons of contaminated soil;
- Construction dewatering;
- Cut and cap of existing utilities and the installation of new water, sewer and drainage to the
new building;
- Furnishing and installation of new traffic signals on Boylston street in vicinity of the project;
- Street restoration including sidewalk preparation, installation of vertical granite curb, cold planing
and bituminous asphalt overlay
The excavation was completed in 2006.
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