We directly verified the condition of the structural components of the existing building (Electromagnetic Engineering Laboratory) being demolished at Technology Research Institute and confirmed the most of them were reusable. To keep these components reusable from the demolished building, we carried out the work with the utmost care, considering the cutting positions and the weight distribution during transportation.

The steel structural components were disassembled by carefully removing each bolt from the existing bolt joints, and the concrete components were cut to a size suitable for transport.

The concrete removed from the existing building was temporarily transported to a material storage site adjacent to the demolished building, while the steel structural components were transported to a frame fabrication factory, where the steel structural components were reprocessed for use as the skeleton of the new building inspected to confirm any damage or deterioration, as well as measured the external dimensions. By temporarily removing the components outside the site, we also conducted verification for potential reuse in other sites as part of future plans.

For used concrete foundation, foundation beams, and slabs, we ensured installation accuracy and made minor adjustments to joints as the same as the precast components, and then casted new concrete at the edges to be joined to suit the planar shape of the new building.

Regarding the steel structural components on the ground, we mainly reused used steel structural components and added new components to the insufficient parts. Construction was carried out using the same assembly procedures as for normal structural steelwork, and there were almost no restrictions due to the used components.

Structural components reused from the demolished building are almost indistinguishable from new materials in appearance, which makes them difficult to identify after completion. To ensure they can be identified we applied red paint to the used steel structural components to improve visibility.

In this project, we reused structural components removed from the demolished existing experimental building and transferred them to the new steel fabrication factory. We succeeded in demonstrating flexible design and construction reusing used structural components, even buildings which has different applications such as using cranes to construct.