The RAM Concrete Column implementation of AS 3600 conforms to AS 3600-2001 "Concrete Structures".

Ultimate limit state design is according to section 10.6 of the code.

The suitability of the user-selected bar pattern with a particular bar size is determined as outlined below:

1. The ultimate compressive strength (N_uo) is determined according to 10.6.3.
2. The internal moment of resistance in each direction is determined in the presence of the applied axial load.
3. The interaction equation given in 10.6.5 is used to determine the unity ratio.
4. Detailing checks are made according to section 10.7.
5. If the selected bar pattern with the current bar size is inadequate, the bar size is increased within the limits specified by the user, until a satisfactory design is achieved.
6. Effective lengths calculated automatically are based on the current ACI methodology and can be overridden on a column by column basis as described in the Concrete Gravity Analysis Manual.