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Article Evaluation of Space Efficiency, Structural Systems, Material Applications, and Design of High-Rise Structures in South Korea(Highlights of Science, 2025) Aktaş, K.O.; Zaim, A.; Aslantamer, Ö.N.; Aktas, G.G.; Ilgın, H.E.This study examines 61 South Korean towers, analyzing their architectural configu-rations, structural systems, material applications, and spatial efficiencies. Findings indicate a pre-dominance of central core configurations and prismatic forms, reinforcing a function-driven approach to vertical urbanism. Structural system preferences highlight the widespread use of out-riggered frames, ensuring lateral stability while optimizing floor layouts. Material selection trends reveal a reliance on concrete, aligning with global patterns, while composite materials (25%) are used in high-performance supertall structures. Functionally, residential high-rises dominate, with mixed-use (2%) and office towers (11%) remaining limited. This research also identifies an aver-age spatial efficiency of 76%, aligning with international benchmarks, though variations exist across cities due to core-to-gross floor area ratios, structural constraints, and service core alloca-tions. This research underscores South Korea’s strategic high-rise development, prioritizing space optimization, structural efficiency, and economic feasibility. However, opportunities re-main for increased functional diversity, broader hybrid material adoption, and greater integration of sustainable design innovations. These findings contribute to global skyscraper analysis, offering insights into high-rise architecture’s role in urban resilience and density management. © 2025 Aktaş et al.Article Citation - Scopus: 1Space Efficiency in Tall Timber Buildings: A Comprehensive Review(Highlights of Science, 2025) Ilgın, H.; Aslantamer, Ö.Tall timber construction is gaining popularity due to its notable environmental and economic benefits throughout its lifecycle. Maximizing space efficiency in these buildings is a key factor in ensuring project viability. However, there has been a lack of comprehensive research on the space efficiency of these projects. This study focused on analyzing 50 tall buildings (over eight stories) globally to improve insights into the design elements that affect space use. The key findings include: i) predominant architectural configurations incorporate residential functions, a centrally positioned core, and prismatic building forms; ii) composite materials are the most utilized, with shear-walled frame systems being the preferred structural solution; and iii) average space efficiency is 84%, with core areas accounting for 11% of the gross floor area, ranging from 71% and 4% at the lower end to 93% and 21% at the upper end. This study provides valuable guidance for architects and other key participants engaged in the planning and construction of tall timber buildings. © 2025 Ilgın and Aslantamer.
