You can use RAM Concept for models that contain any combination of the following:

• one-way slab systems
• two-way slab systems
• beams
• girders
• "wide shallow" beams (that behave similarly to slabs)
• ribs (joists)
• waffles (two-way rib systems)
• mats (rafts)
• openings

There may be steps and changes in thickness and elevations for all of these items.

RAM Concept is not effective, or you cannot use it directly, for the following:

• deep beams using the strut and tie method
• I-shaped sections
• ramps
• concrete sections with internal voids or cells

In most cases, you could model ramps with a large number of steps. The authors do not recommend that you do this for evaluating post-tensioning behavior, as it is not particularly relevant.