Chonnam Korea, An apparent climbing accident occurred on a tower crane that was only 20 meters high. Four people died and one was injured.
Watching a video on this link showed the turntable upside down with loose bolts with no nuts on them. As we've seen numerous times over and over, crews push up into the turntable then loosen bolts prior to installing the pins or bolts that connect the superstructure to the climber. I frankly don't understand it. Occasionally you'll have a hard pin to drive for a climb. Generally it's a 15 minute process for two guys. There are so many things to do in preparation for a climb that it's a non-issue. You have to prep the power chord. Get the towers lined up. Get tools on the climber. Get bolts or pins on the towers. Lower the "diving board or install the rail, or other system to handle the tower. There is no reason to skip this step but we can point to at least four of these accidents here on this site. And the bolts are even easier. Don't be a hero and "balance the crane on the climber. Dozens have died doing just that. It's not a freak accident if it just keeps happening.
타워 크레인 붕괴
타워 크레인 붕괴