Rosenwasser / Grossman Consulting Engineers, P.C.
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Rosenwasser / Grossman Consulting Engineers P.C. is a structural engineering consulting firm headquartered in New York City.
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Our History
Rosenwasser / Grossman Consulting Engineers, P.C. was founded in 1954 by Robert Rosenwasser at the age of 36. He was joined shortly thereafter by Nicholas Marzulli and a young Jacob Grossman in 1956. The firm quickly became the most prolific engineering company in the city due to efficient designs and quality construction documents.
By the 1970’s the firm had completed hundreds of buildings and were well known as the pioneers of high-rise concrete design. Jacob Grossman developed in-house software to analyze and design concrete structures as no commercial software was available, further increasing efficiency and reducing costs.
The 1980’s brought on a string of revolutionary designs with the advent of the sliver building. RGCE was the first to design slender structures with aspect ratios exceeding 10:1. Buildings including 211 Madison Avenue - 1980, Metropolitan Tower – 1984, Carnegie Hall Tower - 1987, CitySpire - 1988, The London Hotel - 1990, and the Millennium Hilton - 1991. Additional achievements include 780 Third Avenue, the world’s first diagonally braced concrete tube structure.
With the 1990’s, came recession and illness of the firm’s founder Robert Rosenwasser. Jacob Grossman assumed all duties as Principal and oversaw operations of the firm. The firm continued their dedication to advancing structural design and were instrumental in the addition of seismic provisions to the New York City Building Code. The firm went on to produce the first seismically compliant building in the city, 565 Fifth Avenue, before the provisions were required by the code.
