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D1.A. American Codes - Steel Design per AISC 360 Unified Specification

Steel member design per ANSI/AISC 360-05, 360-10, and 360-16 Specifications for Structural Steel Buildings, is available in STAAD.Pro. These specifications are published as part of the AISC Steel Construction Manual. Since the ASD and the LRFD method are both addressed in those specifications, they are referred to as UNIFIED.

To use the 2016 edition (default), specify the command:

CODE AISC UNIFIED

or

CODE AISC UNIFIED 2016

To use the 2010 edition, specify the command:

CODE AISC UNIFIED 2010

To use the 2005 edition, specify the command:

CODE AISC UNIFIED 2005
Tip: Either method may be selected in the user interface using the Steel Design - Whole Structure dialog.

Design can be performed according to the provisions for Load and Resistance Factor Design (LRFD) or to the provisions for Allowable Strength Design (ASD), as per section B3 of the code.  This selection of the design methodology can be done through the METHOD parameter.  The full list of parameters is given in D1.A.6 Design Parameters.