AD.2007-11.3.1 ACI 318-11 Concrete Design
Concrete design per the 2011 edition of the ACI 318 specification (ACI 318-11) is now available in STAAD.Pro.
Several new parameters have been introduced to accommodate design of slender columns using the moment magnification procedure for sway and non-sway frames.
Refer to D1.F.5.6.1 Slenderness Effects and Analysis Consideration for details.
To design concrete columns per ACI 318-11
The general outline of this procedure applies to designing all concrete members per ACI 318-11, but the specific parameters mentioned pertain only to the design of columns using the moment magnification method.
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In the Modeling mode, select the Design | Concrete tab.
The Concrete Design - Whole Structure dialog opens.
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In the Current Code drop-down list, select ACI 318-11.
This will insert the following commands into the STAAD.Pro input file:
CODE ACI
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Click Define Parameters.
The Design Parameters dialog opens.
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Select the MMAG parameter and type 0 for the option and then click Add.
This instructs the program to use the detailed calculations considering sway or non-sway frames. .
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Select the SWY parameter and select the appropriate bracing condition for the frame containing the columns to be designed and then click Add.
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(Optional) Set values for BDY, BDZ, SKY, SKZ, SLY, SLZ, SQY, SQZ, SWY, and TRN parameters as necessary (i.e., when the defaults to not match the column conditions).
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Close the Design Parameters dialog and assign the parameters to the appropriate members.