It is said that there are currently more than 10 million existing homes in Japan that do not meet the current seismic standards, and seismic retrofitting of homes is an urgent need for the whole country. On the other hand, general seismic retrofitting requires the dismantling of walls and ceilings, which puts a heavy burden on consumers and is not progressing.
The Aratect construction method developed by LIXIL this time is the "industry's first" earthquake-resistant remodeling that can be constructed from the indoor side without breaking the wall using a fiber sheet.
The seat is an "Aratect sheet" made by processing the high-strength fiber "Aramid fiber", which is also used for reinforcement of piers and bulletproof clothing, to a thickness of 1 mm or less. By fixing it from the top of the existing interior wall with special washers and screws, it is said that it will exhibit the same yield strength (5.3kN / m) as structural plywood after construction.
The technology has obtained a "technical evaluation" for housing disaster prevention from the Japan Building Disaster Prevention Association (evaluation number: DPA-Sumigi-64), and designers and builders need to undergo technical training in advance. That thing. LIXIL will hold technical training at 13 venues nationwide from April, and will start selling sequentially from the completed companies.