If RISA-3D is a bit too advanced (or pricey) for someone seeking a single beam or single column program. Then, I'd recommend taking a look at RISA-2D. Same program, just scaled down to 2 dimensions, and less than half the price.
The RISA website has a good demo version you can download to evaluate it more thoroughly. It still may be a bit complex for someone seeking a single member program. But, once you get used to it, I imagine that it will be a better value than a single beam or single column program could be.