Pardon my old noggin's memory: Did you ever mention how or if the engineering of this structure was getting done? I seem to recall discussing that there was inadequate support for a pool on top. And I just wanted to point out that the addition of that brick doesn't change that, except to increase the weight of the structure. The brick work probably adds very little to the load bearing, if any at all. And definitely doesn't add any shear support, because of all the windows. Who's doing the engineering?
Did you mention where in the world your project is located?