Author: Task Committee 12 | Size: 0.2 MB | Format: PDF | Publisher: AISC | Year: 2003 | pages: 60

This Specification contains Load and Resistance Factor Design (LRFD)
criteria for the design, fabrication, and erection of steel
safety-related structures and structural elements for nuclear
facilities. It is intended to be compatible with, and a supplement to,
the 1999 AISC Load and Resistance Factor Design Specification for
Structural Steel Buildings hereafter referred to as the AISC LRFD
Specification. Unless stated otherwise, provisions of the AISC LRFD
Specification are applicable. Only those sections that differ from the
AISC LRFD Specification provisions are stated within this Specification.
Section designations within this Specification are preceded by the
letter N to denote nuclear facility design provisions. This
specification includes the list of additional symbols, the glossary of
additional definitions, and the appendices. Additional provisions for
stainless steel sections are provided in Section NA5.3. Specifically
excluded from this Specification are pressure retaining components,
e.g., pressure vessels, valves, pumps, and piping. In the design of
members and connections of Seismic Force Resisting Systems, the AISC
Seismic Provisions for Structural Steel Buildings, in general, are not
applicable. However, the detailing requirements of Sections 6 and 7 of
the provisions shall be appropriately considered when designing for
plastic analysis. Single angle members shall comply with the Load and
Resistance Factor Design Specification for Single-Angle Members and with
this Specification. Hollow structural sections (HSS) shall comply with
the Load and Resistance Factor Design Specification for Steel Hollow
Structural Sections and with this Specification. The sponsors of any
system or construction within the scope of this Specification, the
adequacy of which has been shown by successful use or by analysis or
test, but which does not conform to or is not covered by this
specification, shall have the right to present the data on which their
design is based to the authority having jurisdiction for review and
approval. Structures and structural elements subject to this
Specification are those steel structures which are parts of a
safety-related system or which support, house, or protect safety-related
systems or components, the failure of which would impair the
safety-related functions of these systems or components. Safety
categorization for nuclear facility steel structures and structural
elements shall be the responsibility of the owner. As used in this
Specification, the term structural steel refers to the steel elements of
the structural steel frame essential to the support of the required
loads. Such elements are enumerated in Section 2.1 of the AISC Code of
Standard Practice for Steel Buildings and Bridges. For the design of
cold-formed steel structural members, whose profiles contain rounded
corners and slender flat elements, the provisions of the American Iron
and Steel Institute North American Specification for the Design of
Cold-Formed Steel Structural Members shall be applicable
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