Applies To
	Product(s):	STAAD Advanced Concrete Design
	Version(s):	Connect Edition
	Environment:
	Area:	Concrete Design
	Subarea:	General
	Original Author:	Ranjana, Bentley Technical Support Group

 Can I define concrete grade as 27 N/sqmm in RCDC for IS code design? How and what is the impact of this in design?

Yes, RCDC allows to define any grade of concrete in design. The maximum concrete grade is 100N/sqmm. User can add any grade of concrete in list and use for the member design in RCDC.

For section design, RCDC use the concrete grade which is defined by user. For checks like Tcmax in shear design, as the interpolation is not desire, RCDC uses the lower value defined in code as permissible shear stress in the design.