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Contractors World International - 2015 Vol 6 No 2

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Parking Deck Repairs
at New York’s Pier 40

Located in New York, USA, Pier 40, is the largest pier structure on the Hudson River. Today, this historic structure is owned by the Hudson River Park Trust and Pier 40 is home to athletic fields and administrative offices. The perimeter of the property is surrounded by over 1 million square feet (92,900 m²) of commercial parking and is one of Manhattan’s largest parking facilities.

When the Hudson River Park Trust inherited the pier, it came with a number of structural issues. Sections of the roof had deteriorated significantly as a result of delayed routine repairs, leakage, and spalling concrete. In addition, portions of the parking garage were closed to ensure public safety , thereby reducing the park’s operating revenue.

Because of the size of the facility and the need to keep it operational, the Hudson River Park Trust addressed repairs in a phased approach. The company STRUCTURAL was awarded the contract for Phase 2 of the parking deck restoration project.

Working together with the consulting engineers, Experion Design Group, the Long Island office of STRUCTURAL had crews remove the existing top slab of the parking deck along with the existing waterproofing, pitching slab, and all electrical and plumbing systems associated with the area.

This exposed an unforeseen challenge. The surface of the existing precast planks underneath had a thin layer of cementitious material. This thin layer would not provide a solid surface for the new waterproofing system to hold on to.

The team came up with the solution to hydroblast the deck in order to prepare the area. The contractor then installed hot applied waterproofing on precast planks and a pitched concrete topping.

Crews were then able to repair the existing precast concrete channels, ribs, and floor spalls using repair mortar. They also installed a LED light system on the middle level of the parking deck, providing the area with the most energy efficient light fixtures with the required illumination levels based on local standards.

Crews had to remove the existing top slab of the parking deck along with the existing waterproofing system to prepare a surface for restoration.Overcoming Challenges

Throughout the project, debris had to be contained and kept away from the water – posing logistical challenges.

Crews had to remove the existing top slab of the parking deck along with the existing waterproofing system to prepare a surface for restoration.

The contractor had to transport waste and materials from the far side of the parking deck to the connecting street.

continued >>>

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