Kumagai Gumi (1861) · InitiativeFirst statedLatest General Meetings of Shareholders (2026-05-27): "Cited as achieved"
Development and introduction of KS timber buckling-restrained braces
First written in FY2022. 1 of 2 entries say "Cited as achieved", first in 2026-05-27. Latest entry: 2026-05-27.
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1from disclosures
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Development of Wood Buckling-Restrained Braces and Their Introduction into Medium- to Large-Scale BuildingsA theme 1 companies write about · 0 as a headwind · 1 as a tailwind
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- 2026-05-27Cited as achievedGeneral Meetings of Shareholders
「In addition, the project uses approximately 87 m3 of timber throughout the building by adopting Sumitomo Forestry Co.,Ltd.’s “Kigurumi Hybrid Perforated Beam” and the “KS Timber Buckling-Restrained Brace” jointly developed by the two companies.」
States that the KS Timber Buckling-Restrained Brace, a technology jointly developed with Sumitomo Forestry Co.,Ltd., has been adopted in an actual completed construction project. - FY2022First statedAnnual report
「The Company jointly developed with Sumitomo Forestry Co.,Ltd. the steel brace "KS Timber Buckling-Restrained Brace," whose buckling is restrained by timber materials, and obtained structural-performance evaluation from Japan ERI Co., Ltd. in March 2022 at the highest BA rating for braces.」
The brace combines Kumagai's seismic-structure technology with Sumitomo Forestry's timber-material technology and uses LVL and plywood as buckling restraints. The Company aims to introduce it in medium- and large-scale timber buildings in addition to steel-frame structures.