Performance of reinforcing-steel with joints for down-conductors and resistance of a building where rebar and joints were connected by connectors

The Investigation and Research Committee of the Institute of Electrical Installation Engineers of Japan evaluated the performance of rebar used in the construction of buildings as down-conductors for lightning protection and determined that lightning current can be made to flow through rebar and joints that meet requirements. The authors measured the resistance of a building where rebar and joints were connected by lightning connectors and proved that the resistance was very low.