True, this may not be an architectural forum, but this is a site promoting a powerful tool that many designers, architects and artist will soon see the value in using. Trust me, it's just a matter of time before they all start jumping in. So this is a meaningful discussion to have on this forum and I commend you guys for inviting the process.
With that said, from an artistic standpoint, I really enjoyed the images, the good use of perspective, the sense of space, the dramatic tension between solids and voids, the explosive and powerful conceptual presentation of cantilevered reinforced concrete, monolithic in size unfunctional at that, yet juxtaposed by the functional and rhythmic, almost sterile-like stairs that reflects the similar rhythm and cadence of the structure above.
From a design standpoint, and an architecturally functional one, since after all, you ARE an architecture student, the use of concrete textures leaves little else to interpretation.... concrete texture without doors, or openings to something beyond the sculpture seems like such a missed opportunity. There is simply nowhere to go once you arrive at the lower plaza-space. If there was one opening, one penetration to the lower mass, possibly showing nothing but a dark space, you would have renewed the tension and functional aspects of your project, in my most humble opinion. As it stands it's just art.... and a nice piece.
But quite frankly, it looses it's impact once you realize concrete is not built that way. Textures don't align and they make little construction sense. Think for a minute, the textures you are using are of "poured concrete" with rebars. Look again...
I agree with the previous poster who recommended using a non-descript texture - white board, chipboard, keeping it non-specific. It's a beautiful conceptual model, let it be conceptual for now - it would make a stronger statement, and sell the design more easily. When you figure out how to use concrete... when you work out the issues with the texture, from a design standpoint, (and you will), then and only then will you be free to "honestly" celebrate the expressive potential of raw structure!
The best designs (and renderings) may appear simple, but they "work"! What we have learned from the film industry is that the eye catches the details, and you don't have to be an architect to intuitively know when something doesn't works or doesn't makes sense.
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