RESEARCH & DEVELOPMENT
HOUSING&
ARCHITECTURE
1 GROUP
Evolving wooden architecture
for an amazing future
We are working on the development of construction methods for wooden buildings.
We conduct research and development in a wide range of fields,
from detached houses to medium- and large-scale construction.
Big-Frame (BF) Construction Method for strong wooden houses
We developed the BF construction method, that enables a Rahmen structure in a wooden house, to realize a strong, flexible wooden building that allows a high degree of design freedom. We are continuing the evolution of wooden buildings.
Post-tensioning systems that support medium and large-scale architecture
Post-tensioning is a method in which a steel rod is put through a wall column, beam, etc. and tightened. The tension enhances the strength of a wood structure. Strength verification is repeated with structural test elements with the goal of practical use in medium-scale wooden buildings.
Taking on the fire resistance required by medium to large-scale buildings
We developed the Ki-Gurumi CT, a one-hour fire-resistance structural material, using wood as a fire-resistance covering material. In large-scale fire-resistant furnaces, we conduct fire resistance tests with full-size test elements and examine various material configurations including burning margin designs.
Confirming strength and seismic performance with full-scale tests
Testing is extensive, from single screw extraction experiments to experiments using full-sized structures.
Data that can not be obtained by simulation is acquired through static load tests and vibration tests to verify strength and earthquake resistance.