Have you seen our module In-Situ Concrete?

First, the in-situ concrete core is entered into the software. The core is usually measured on site. It can then be reconstructed with dimensional accuracy. A number of tools are available for this purpose.

Several tables are available to make it easy to enter the concrete core, compensate for different tread heights, and calculate the necessary backfill for treads and risers. After the concrete core entered, it is "frozen". Then the coverings and railings can then be designed.

The distance between the risers and the concrete core and the overhang for the treads and risers can also be defined. The wood treads can be designed independently of the concrete core. 

In the design area you can use all the elements that are available for the construction of normal stairs. The available features depend on the user´s main program version.