These documents appear to be architectural engineering drawings (国有財産図 - National Property Diagram) depicting detailed floor plans and structural cross-sections for a multi-story building, likely in Japanese. The drawings include precise grid coordinates (X1-X14, Y1-Y7), show complex interior layouts with numerous rooms and interconnected spaces, and provide technical annotations and measurement details. The plans include floor plans from multiple perspectives, vertical cross-sections, and intricate mechanical/structural routing information. The drawings are technical in nature, showing architectural details at what seems to be a 1:100 or 1:200 scale, with gridlines and precise dimensional measurements across three separate but related architectural blueprint pages.
