Abstract
Japan Reinforcing Bar Joints Institute revised the standard specification for reinforcing bar joint work, i.e. gas pressure welded joint work, welded joint work and mechanical joint work in last year. Reinforcing bar joint work is important to secure safety of reinforced concrete structure. The main points of the revision are as follows. (1)Required performances of reinforcing bar joint are prescribed distinctly in the standard specification. (2)The quality control of reinforcing bar joint work is executed with unified system in three kinds of joint work. (3)Grade-A joint work companies are certified by Japan Reinforcing Bar Joints Institute and allowed to perform grade-A joint work. (4)Inspection is conducted under the witness of employer or the architect/engineer.
