新颖性：The structure has a compartmentalized concrete structure (1) resting on a concrete slab, with dimension of 3 by 3 meters and thickness of 400 mm thick, of a dividing wall (2) having openings abutting on perpendicular walls (3-6) with identical passage openings (7). The perpendicular walls include a closure receiving recess (8) fitted with a grid (9). The dividing wall includes a ........
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