Seeking New Fire Resistive Structure Approvals for Floor and Flat Roof
Since 2004 COFI and the Japan 2×4 Home Builders Association jointly received 21 MLIT fireproof approvals. Those approvals have been targeted mainly at fireproof single family homes, where balconies are not eligible for the use as emergency evacuation paths. As for the roof assemblies, the fireproof specification has been assuming only pitched roofs. As more and more non-residential projects are built with fire proof structures, PFC builders have indicated a need for new fireproof assemblies that can be used for emergency evaluation balconies and flat roofs. As the preparatory procedures for FY2014 market access projects, COFI and Japan 2×4 Home Builders Association started dialogs with performance evaluation bodies for conducting series of fire test seeking new ministerial approvals. On December 12th, 2013, COFI and the Association met with the fire test staff of Centre for Better Living (CBL) Laboratory in Tsukuba-City to plan the fire tests seeking 1-hour fire resistive exterior floor assembly. On the subsequent day, meeting were also held with the laboratory staff of Japan Testing Centre for Construction Materials (JTCCM) in Soka-City to discuss the fire tests for 30-minute flat roof assemblies. COFI and the Japan 2×4 Home Builders Association are planning to jointly test these non-residential assemblies at the above test centres early in the next fiscal term to support market development of large scale PFC structures.