Is the concrete building existing? Was it, or will it be designed for these loads? I assume you mean laterally and that the steel is not going on top of the concrete building
It is not something I would want to do. Consider a flagpole, pinned at the base and laterally braced a quarter of the way up the pole; if the total wind on the pole is "H", then the force on the brace is 2H and the reaction at the base is (-)H.
Michael.
Timing has a lot to do with the outcome of a rain dance.