Second Home Column Rebar

After a successful pour yesterday, the steel crew has begun to extend the rebar in the columns while the scaffold guys re-erect the scaffolding. In the video you will see the process utilized to join two pieces of rebar together. After heating the steel, a compressed air is used to squeeze the two bars together. Another extreme measure here in Japanese construction. Why simply tie the bars together with tie wire when you could actually join them? Fascinating.