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D. American Concrete design per ACI 318M - 2005

RC Designer has three ACI 318M - 2005 design briefs, the design principles utilized by these are defined in:

Note: This feature is available in STAAD.Pro V8i (SELECTseries 2) release 20.07.07 and higher.
Code Ref
ACI 318M-2005
Description
Metric Building Code Requirements for Structural Concrete (ACI 318M-05) and Commentary (ACI 318R-05)
Revision
First printing, January 2005

See D. American Concrete design per ACI 318 - 2005 for information on the implementation of ACI 318-05.