JSCE Standard Specifications for Concrete Structures have been widely used in practical applications within Japan with a great reputation from users in various fields of design, construction and maintenance of concrete structures while undergoing repeated modifications and revisions, ever since the 1931 publication of the predecessor, Standard Specifications for Reinforced Concrete Structures. As codes that define the methodologies of planning, design, construction and maintenance of concrete structure should be, it has been contributing remarkably to the development of concrete technology in Japan. The 2002 revision was particularly significant, marking a transition from standards with prescriptive specification format to those with performance-based format. Today, ten years later, the concrete committee has published the 2012 revision of the Standard Specifications for Concrete Structures, which incorporate the latest technological developments and applications. The 2012 editions of the specifications consisted of six parts, "General Principles", “Design”, “Materials and Construction”, “Maintenance”, “Dam concrete”, and "Test methods and Specifications". In this home page, typical characteristics of the JSCE codes are introduced.