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400 West 155th Street, New York, NY



This new 13-story 172,665-square-foot structure designed by the famous Sir David Adjaye contains 124 residential units, a daycare center, a museum, offices, rentable commercial space, and one level of below-grade parking. The building’s sawtooth plan was constructed utilizing a reinforced concrete superstructure clad with architectural precast fa├žade panels. The building incorporates green design principles emphasizing environmentally responsible materials and energy-saving technologies to minimize operating and long-term costs. The building is designed to achieve a LEED Silver certification.

The site is located at the intersection of two major thoroughfares, each with active bus routes. Extensive planning, scheduling, and coordination were required during all phases of construction to ensure public transportation and traffic were not significantly impacted. Also, a public school is directly across from site. Mountco successfully kept all activities moving smoothly in order to meet the schedule. Rock excavation along adjacent structures was the biggest challenge faced in tight quarters with properties abutting on three sides. Mountco’s selection of an experienced contractor along with the right equipment aided in the successful excavation, 14 hours a day/6 days a week. Pre-Cast panels were fabricated in Canada adding to scheduling difficulties. Con Ed vaults were on the steep roadway.

Total Units: 124
Total Square Footage: 172,665

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