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// CODE SNIPPET

1622.1 Nonbuilding Structures

NYC Building Code 2008 > 16 Structural Design > 1622 Nonbuilding Structures Seismic Design Requirements > 1622.1 Nonbuilding Structures
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The requirements of Section 9.14 of ASCE 7 shall apply to nonbuilding structures except as modified by Sections 1622.1.1, 1622.1.2 and 1622.1.3.

1622.1.1 ASCE 7, Section 9.14.5.1

Modify Section 9.14.5.1, Item 9, to read as follows:

9. Where an approved national standard provides a basis for the earthquake-resistant design of a particular type of nonbuilding structure covered by Section 9.14, such a standard shall not be used unless the following limitations are met:

  1. The seismic force shall not be taken as less than 80 percent of that given by the remainder of Section 9.14.5.1.
  2. The seismic ground acceleration, and seismic coefficient, shall be in conformance with the requirements of Sections 9.4.1 and 9.4.1.2.5, respectively.
  3. The values for total lateral force and total base overturning moment used in design shall not be less than 80 percent of the base shear value and overturning moment, each adjusted for the effects of soil structure interaction that is obtained by using this standard.

1622.1.2 ASCE 7, Section 9.14.7.2.1

Modify Section 9.14.7.2.1 to read as follows:

9.14.7.2.1 General. This section applies to all earth-retaining walls. The applied seismic forces shall be determined in accordance with Section 9.7.5.1 with a geotechnical analysis prepared by a registered design professional.

The seismic use group shall be determined by the proximity of the retaining wall to other nonbuilding structures or buildings. If failure of the retaining wall would affect an adjacent structure, the seismic use group shall not be less than that of the adjacent structure, as determined in Section 9.1.3. Earth-retaining walls are permitted to be designed for seismic loads as either yielding or nonyielding walls. Cantilevered reinforced concrete retaining walls shall be assumed to be yielding walls and shall be designed as simple flexural wall elements.

1622.1.3 ASCE 7, Section 9.14.7.9

Add a new Section 9.14.7.9 to read as follows:

9.14.7.9 Buried structures. As used in this section, the term "buried structures" means subgrade structures such as tanks, tunnels and pipes. Buried structures that are designated as Seismic Use Group II or III, as determined in Section 9.1.3, or are of such a size or length as to warrant special seismic design as determined by the registered design professional, shall be identified in the geotechnical report. Buried structures shall be designed to resist seismic lateral forces determined from a substantiated analysis using standards approved by the commissioner. Flexible couplings shall be provided for buried structures where changes in the support system, configurations or soil condition occur.

Related Code Sections


1622.1 Structural Design, Nonbuilding Structures
The requirements of Section 9.14 of ASCE 7 shall apply to nonbuilding structures except as modified by Sections 1622.1.1, 1622.1.2 ...
NYC Building Code 2008 > 16 Structural Design > 1622 Nonbuilding Structures Seismic Design Requirements > 1622.1 Nonbuilding Structures
Reference Standard 9 Loads [PDF] (page 12)
without collapse of the building." Subdivision (i) Nonbuilding Structures. Paragraph 4. Other nonbuilding structures. Delete in the first sentence ...
NYC 1968 Code (Vol II) [PDF] > Reference Standard 9 Loads
Section 1621 Structural Design, Architectural, Mechanical and Electrical Component Seismic Design Requirements
, including supporting structures and attachments (hereinafter referred to as "components"), and nonbuilding structures that are supported by other ...
NYC Building Code 2008 > 16 Structural Design > 1621 Architectural, Mechanical and Electrical Component Seismic Design Requirements
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