The purpose of code checking is to ascertain whether the provided section properties of the members are adequate as per API.  Code checking is done using the forces and moments at specific sections of the members.  If no sections are specified, the program uses the start and end forces for code checking.

When code checking is selected, the program calculates and prints whether the members have passed or failed the checks, the critical condition of API code (like any of the API specifications for compression, tension, shear, etc.), the value of the ratio of the critical condition (overstressed for value more than 1.0 or any other specified RATIO value), the governing load case, and the location (distance from the start of the number of forces in the member) where the critical condition occurs.

Code checking can be done with any type of steel section listed in D1.A.3 Member Properties .

Refer to D1.B.1.3 Code Checking for general information on Code Checking. Refer to TR.49 Code Checking Specification for details the specification of the Code Checking command.