Repeat Performance

by Neil Wexler, P.E., (M.ASCE), Pres.; Wexler Assocs., New York, NY,

Serial Information: Civil Engineering—ASCE, 2002, Vol. 72, Issue 4, Pg. 67-74

Document Type: Feature article


Working with a budget of $10 million, engineers designing a new high-rise residential structure in New York City had to find creative ways to control costs. One budget-saving idea was the use of a repetitive slab design for the floors. The structure, built between two existing apartment buildings, was designed to have 16 floors and reach a height of 160 ft (48 m), measure 34 ft (10 m) in width, and have a depth that varied from 90 ft (27 m) below the second floor to 54 ft (16.5 m) at the top. The simple cast-in-place, flat-plate concrete floors were supported on concrete columns and walls. The columns were incorporated into the apartment walls whenever possible to make their presence less conspicuous. Another cost-cutting measure was the use of a rooftop concrete outrigger as a lateral-load-resistance system, which lowered lateral deflections by 50 percent. The structure is expected to be in use by March, 2002.

Subject Headings: Residential buildings | Floors | Walls | Concrete columns | Building design | Budgets | Benefit cost ratios

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