Section 27-717
§ 27-717 General. The possibility of overturning and sliding of the
building shall be considered.
Section 27-718
§ 27-718 Factor of safety. (a) Overturning. The minimum factor of
safety against overturning of the structure as a whole shall be one and
one-half. Stability against overturning shall be provided by the dead
load of the building, by the allowable uplift capacity of piling, by
anchors, by the weight of soil directly overlying footings provided that
such soil cannot be excavated without recourse to major modification of
the building, or by any combination of these factors.
(b) Sliding. The minimum factor of safety against sliding of the
structure under lateral load shall be one and one-half. Resistance to
lateral loads shall be provided by friction between the foundation and
the underlying soil, by passive earth pressure, by batter piles, or by
plumb piles, subject to the following:
(1) The resistance to lateral loads due to passive earth pressure
shall be discounted where the abutting soil could be removed
inadvertently, by excavation.
(2) In the case of pile supported structures, frictional resistance
between the foundation and the underlying soil shall be discounted.
(3) The available resistance to friction between the foundation and
the underlying soil shall be predicated on an assumed friction factor of
one-half for soils of classes 1-65 through 8-65. A greater value of
coefficient of friction may be used subject to verification by analysis
and test. For soils of poorer classes, the stability shall be analyzed
by accepted procedures of soil mechanics.
To the extent possible under law, Friends of Devin Balkind for Public Advocate has waived all copyright and related or neighboring rights to New York City Administrative Code. This work is published from: United States.
Special thanks to Benjarmin Kallos and Thom Neale who made this content publicly available as a bulk download.