Revision of JASS 5 Reinforced Concrete Work-2009 by Architectural Institute of Japan

Abstract

Japanese Architectural Standard Specification (JASS) 5 Reinforced Concrete Work was revised and published by Architectural Institute of Japan in February 2009. This paper describes main revisions. Those contain newly developed techniques, environment conscious techniques such as eco-cement or recycled aggregate concrete, substantial inspection methods for cover thickness, durability oriented techniques such as 200 years housing, establishment of quality standards on drying shrinkage and Young's modulus, and correcting value for compensating the strength of concrete in structures. As for specially specified concrete, stipulations were improved for engineers to use practically.