In the Japanese traditional P&B housing industry, more and more structural designers prefer using SPF dimension lumber for roof rafters and floor joists. This is because dimension lumber is easier to handle and to procure compared… more
As reported in this blog previously, the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) amended the Building Standard Law (BSL) to streamline fire-related regulations for wooden buildings in order to facilitate increased… more
In collaboration with the Japan 2×4 Home Builders Association, COFI continues development work on Nail laminated timber (NLT) assemblies. Aside from structural and fire-resistive considerations, floor vibration is another important… more
As a result of a multi-year market access initiative aimed at opening the Japanese market up for nail-laminated timber (NLT), COFI recently received certificates from MLIT* for the quasi-fire resistive structure approvals. The approvals… more
This past year COFI/Canada Wood Japan worked with the Japan 2×4 Home Builders Association to facilitate the spread of large-scale wooden buildings using Nail-Laminated Timber (NLT) in horizontal diaphragms such as roof and floor… more
