414 Light Street
Location: Baltimore, MD
Owner: 414 Light Street Owner, LLC
General Contractor: Lead Lease (US) Construction Inc.
Date Complete: October 2016
Brayman was subcontracted to provide specialty geotechnical
construction services in support of the 414 Light Street Apartment Complex project located at the corner of Light and Conway Streets on the edge of the Inner Harbor seaport of Baltimore, MD.
Engineering analysis recommended a deep foundation system comprised of caissons to support construction of the multi-story building within the development site. These new foundations must be drilled to bedrock through
existing auger cast piles remaining in the ground from a building razed over twenty years ago.
Brayman’s scope of work involves installation of the 113-each drilled caissons ranging in diameter from 36-inches to 96-inches and with depths exceeding 120-feet.
Due to soil conditions of the harbor site, polymer slurry along with
temporary casing is necessary to stabilize the shaft sidewalls. To build the caissons, Brayman must employ the tremie concrete placement method so that the rising concrete from the bottom of the shaft displaces the water without washing out the cement.
Brayman is performing all drilling operations under an accelerated
schedule utilizing multiple drill rigs and second shifts concurrently to meet the aggressive deadline.
Space restrictions of the urban site present challenges such as
synchronizing material deliveries with consideration for adjacent
congested intersections; and completing tasks safely in close proximity to one another.