Applies To
	Product(s):	STAAD.Pro
	Version(s):	All
	Environment:	N/A
	Area:	Concrete Design
	Subarea:	General Concrete Design Solutions
	Original Author:	Bentley Technical Support Group

For an existing concrete member, I need to compute the capacity of the section. How do I do this?  

You can do the following to compute the capacity of the concrete section:

Model the structure.
Specify the existing profile to the member properties
Specify all the required member specification and Support condition
Specify the load on the structure
Specify the Concrete design parameters
Specify the parameter MinMain and Maxmain to the provided bar size 
Do the design
Check the results.
Adjust the load and redo the design until the reinforcement matches with the provided steel.