National Park Service Statue of Liberty Restoration Temporary Power

Louis C. Allegrone Masonry Inc. was named the general and masonry contractor for the $22 million project to rehabilitate the granite masonry of the 11-pointed star-shaped Fort Wood beneath the monument. GPI was hired by Allegrone to design temporary electrical and sanitary services to support its construction work and job trailers. The GPI Buildings Group, using its experience delivering sophisticated engineering solutions on tight deadlines to meet client needs, provided technical and construction design drawings and specifications for code-compliant temporary power and sanitation. GPI finished complete drawings in less than two months from the January 2021 engineering design start. This fast turnaround enabled Allegrone to obtain the necessary permits in advance of mobilizing its job trailers and equipment to Liberty Island in support of the anticipated spring construction start.

GPI surveyed existing utilities and reviewed the proposed site plan depicting layout of the job trailers and their proximity to power and sanitary drainage. Access to 480V three-phase power, typically used in larger commercial and industrial sites, was available, but required GPI to design a solution to transform it to 120/240V single-phase power to provide electricity to the job trailers. GPI also designed resilient power panels and receptacles that were rated for exterior and wet applications at the outdoor work site. GPI designed sanitary sewer connections and domestic water services for the job trailers, which connected to existing sanitary utility holes and water services on the island.