Sidewalks are built for pedestrian traffic, not to support the weight of an aerial lift. The wheels of this aerial lift exert hundreds of pounds per square inch of weight on the ground beneath it.
This operator chose to operate the aerial lift on a sidewalk which also contains service covers. Obviously, these service covers are rated less than the sidewalk. The operator drove over the sidewalk cover causing it to crumble and ultimately triggering the toppling of this aerial lift.
The condition of the occupants of this aerial lift is unknown; however, the most common cause of fatalities in aerial lift accidents is turnover.
Run for cover! There is a crane in my neighborhood setting roof trusses.
Seriously, there are dozens of crane accidents on YouTube. It seems as if most cranes end up on the roof of the house they were meant to build or reach over.
I think, there are two main reasons for all the videos of crane accidents on YouTube: One is that cranes are interesting to watch, and if they are in a public setting someone is going to take a picture or video of it. The other is that most residential contractors won’t pay for a professional crane company. Instead, they use a taxi rental company, or even worse, they rent a crane from a tool rental company and operate it themselves.
When working in residential areas, there is also the problem of where to setup. Yards, streets, sidewalks, and driveways don’t have the capacity to support a crane. And, of course, you’d have to setup in the street because you can’t mess up an owner’s yard causing the operator to reach over the house to set a pool or spa. Before you know it, the crane runs out of capacity and ends up in someone’s living room.
If you happen to be a spectator, just remember to keep a safe distance!
Whether it is a quick in and out or a complete construction project, self-erecting tower cranes are a serious option filling a niche between telescoping and lattice boom cranes. Because they are efficient to transport and erect easily, they compete with lattice boom cranes for reach when heavy capacity is not required.