Analyzing space efficiency in Japanese tall buildings
Space efficiency in Japanese tall buildings holds substantial significance, shaped by financial, societal, and environmental imperatives. Nevertheless, comprehensive studies addressing spatial efficiency in such towers remain scarce. To bridge this gap, this article undertakes a quantitative spatial...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-07-01
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| Series: | Journal of Asian Architecture and Building Engineering |
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| Online Access: | http://dx.doi.org/10.1080/13467581.2025.2540084 |
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| _version_ | 1849337004138954752 |
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| author | Hüseyin Emre Ilgın Özlem Nur Aslantamer |
| author_facet | Hüseyin Emre Ilgın Özlem Nur Aslantamer |
| author_sort | Hüseyin Emre Ilgın |
| collection | DOAJ |
| description | Space efficiency in Japanese tall buildings holds substantial significance, shaped by financial, societal, and environmental imperatives. Nevertheless, comprehensive studies addressing spatial efficiency in such towers remain scarce. To bridge this gap, this article undertakes a quantitative spatial analysis of 40 Japanese tall buildings through BIM/CAD-based floor plan evaluations and comparison of net-to-gross and core-to-GFA efficiency ratios. Key findings include: (1) mixed-use and office typologies, central cores, and prismatic massing dominate contemporary Japanese high-rise design; (2) composite structures with shear-walled frame systems are prevalent; and (3) the average net-to-gross ratio is 75%, with core areas occupying 23% of total GFA. The efficiency metrics range from 64% to 85% for net-to-gross ratios, and from 13% to 34% for core-to-GFA ratios. This research offers practical insights for stakeholders – especially architects and planners – to support more efficient and sustainable high-rise design strategies in Japan. |
| format | Article |
| id | doaj-art-542dc0bf14ed495f820c080f7d0f4e94 |
| institution | Kabale University |
| issn | 1347-2852 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Architecture and Building Engineering |
| spelling | doaj-art-542dc0bf14ed495f820c080f7d0f4e942025-08-20T03:44:50ZengTaylor & Francis GroupJournal of Asian Architecture and Building Engineering1347-28522025-07-010012710.1080/13467581.2025.25400842540084Analyzing space efficiency in Japanese tall buildingsHüseyin Emre Ilgın0Özlem Nur Aslantamer1Tampere UniversityAtılım UniversitySpace efficiency in Japanese tall buildings holds substantial significance, shaped by financial, societal, and environmental imperatives. Nevertheless, comprehensive studies addressing spatial efficiency in such towers remain scarce. To bridge this gap, this article undertakes a quantitative spatial analysis of 40 Japanese tall buildings through BIM/CAD-based floor plan evaluations and comparison of net-to-gross and core-to-GFA efficiency ratios. Key findings include: (1) mixed-use and office typologies, central cores, and prismatic massing dominate contemporary Japanese high-rise design; (2) composite structures with shear-walled frame systems are prevalent; and (3) the average net-to-gross ratio is 75%, with core areas occupying 23% of total GFA. The efficiency metrics range from 64% to 85% for net-to-gross ratios, and from 13% to 34% for core-to-GFA ratios. This research offers practical insights for stakeholders – especially architects and planners – to support more efficient and sustainable high-rise design strategies in Japan.http://dx.doi.org/10.1080/13467581.2025.2540084tall buildingarchitectural design considerationsstructural design considerationsspace efficiencyjapan |
| spellingShingle | Hüseyin Emre Ilgın Özlem Nur Aslantamer Analyzing space efficiency in Japanese tall buildings Journal of Asian Architecture and Building Engineering tall building architectural design considerations structural design considerations space efficiency japan |
| title | Analyzing space efficiency in Japanese tall buildings |
| title_full | Analyzing space efficiency in Japanese tall buildings |
| title_fullStr | Analyzing space efficiency in Japanese tall buildings |
| title_full_unstemmed | Analyzing space efficiency in Japanese tall buildings |
| title_short | Analyzing space efficiency in Japanese tall buildings |
| title_sort | analyzing space efficiency in japanese tall buildings |
| topic | tall building architectural design considerations structural design considerations space efficiency japan |
| url | http://dx.doi.org/10.1080/13467581.2025.2540084 |
| work_keys_str_mv | AT huseyinemreilgın analyzingspaceefficiencyinjapanesetallbuildings AT ozlemnuraslantamer analyzingspaceefficiencyinjapanesetallbuildings |