The General tab of the Calculation Parameter Definition dialog box for the Chinese code GB 50010-2002: 
Concrete parameters are defined 3 ways. 
- When the As in a structure model option is selected, needed material parameters are assigned from the data used for static calculations of structures. 
 
- Define the value of concrete strength Fck. 
 
- Specify from the list of available concrete classes. 
 
Reinforcement check checks the reinforcement due to cracking. 
The following parameters may be defined. 
- Exposure (the allowable crack width changes depending on which exposure is selected). 
 
- Redistribution factor. 
 
- Safety class of a structure. 
 
- Minimum reinforcement type.