Computational Morphometric and Spatial Analysis of Micro-Public Architecture: The Tokyo Toilet Project
JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEERING, cilt.15, sa.5, ss.34-66, 2026 (SCI-Expanded, AHCI, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 15 Sayı: 5
- Basım Tarihi: 2026
- Doi Numarası: 10.1080/13467581.2026.2700873
- Dergi Adı: JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEERING
- Derginin Tarandığı İndeksler: Scopus, Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest), Science Citation Index Expanded (SCI-EXPANDED), Arts and Humanities Citation Index (AHCI), Compendex, Index Islamicus, Art Source, Directory of Open Access Journals
- Sayfa Sayıları: ss.34-66
- Erciyes Üniversitesi Adresli: Evet
Özet
This study presents a computational morphometric and spatial analysis of 17 public toilet designs from the Tokyo Toilet project, a curated initiative commissioning internationally recognized architects to reimagine urban sanitation infrastructure in Shibuya, Tokyo. Employing a three-layer analytical framework, the research integrates (1) nine morphometric shape descriptors with box-counting fractal dimension analysis, processed through Principal Component Analysis and Ward hierarchical clustering; (2) space syntax analysis using Justified Plan Graphs to quantify mean depth, integration, and control values; and (3) a composite privacy gradient metric combining normalized spatial depth with visual enclosure. The analysis identifies four distinct morphometric clusters: Elongated/Linear, Curvilinear/Organic, Fragmented/Complex, and Compact/Minimal. Principal Component Analysis reveals that geometric regularity (PC1, 55.7%) and linear articulation with boundary complexity (PC2, 21.8%) account for 77.5% of morphometric variance. Cross-layer correlation analysis demonstrates that geometric enclosure (r = 0.67) and configurational depth (r = 0.66) contribute in near-equal measure to privacy performance, revealing two complementary design channels, while fractal dimension operates independently of the shape descriptor suite. The findings contribute a replicable typological framework for analyzing micro-scale public architecture, demonstrating that computational plan analysis can reveal systematic relationships between formal composition, spatial configuration, and functional performance in minimal architectural programs.