The term “sliver building,” according to the New York City (NYC) zoning code, is specifically reserved for a tall building or enlargement that is 45 feet wide or less. In many cases, such buildings are restricted to a height equal to the width of the abutting street or 100 feet, whichever is less. However, when considering the structural stability of a building, a “sliver building” is commonly a narrow building having a large aspect ratio (height to width). Even though a building may not specifically be designated as a sliver building according to the local zoning code and building department, engineers often encounter similar conditions which often present stability issues due to the narrow width when resisting lateral loads. …
Author Archives : Xiaoli Tong, P.E.
Xiaoli Tong, P.E., is an engineer with Dominick R. Pilla Associates, P.C. Prior to joining the firm, Mr. Tong worked in a prominent national research institute on building technology in China. He can be reached at xiaolit@drpilla.com.
From Planning to Completion
It is not unusual to create an opening in existing floors during building renovations and alterations. A new opening may be used for stairs, an elevator shaft, a duct penetration, skylights, etc. In order to execute a feasible modification and maintain the existing building’s structural stability, a qualified structural engineer should be involved during the initial planning phase. …