Curved Corduroy Concrete: The Tower and Ring of the Civic Center

Design a civic service complex in the manner of Paul Rudolph built from curved corduroy concrete: ribbed surfaces bending around a horseshoe-shaped courtyard, with a spiral stair drum and a stepped tower anchoring one corner. Compose flowing concrete balustrades and rounded parapets, deeply shadowed loggias, the ribs following the curve continuously, an empty paved plaza, no street furniture, overcast diffuse light bringing out the texture, wide view across the courtyard, 24mm lens, architectural photography, ultra photorealistic, 8K