Modern versions of wrecking balls have evolved to be slightly pear-shaped. Completely round wrecking balls, like the ones shown in cartoons, have a tendency to get stuck when they are pulled back from wreckage.
Other shapes were tested by manufacturers to find a better wrecking ball solution. Demolition crews found that the graduated spherical wrecking ball form slid out of the holes it had created much more easily. Many size variations of the modern design are available, but the iconic round steel wrecking balls are becoming increasingly difficult to find.
Skilled, trained and licensed demolition professionals operate the controls that hurtle these huge masses of steel into the sides of structures. Weeks and even months of planning go into the process of preparing and clearing each new site for demolition.
The wrecking ball does not start to swing until the crew is ready and the all-clear signal is given. Certified Riggers: What is the Difference? Baker and Son R. Show on Science Channel R. Recent News. Demolition, Asset Recovery, and the Supply Chain. Innovation in Rigging Helps Preconstruction.
Architectural Salvage During Demolition. Their remaining popularity in song and cultural consciousness might just be due to people's fascination with destruction. But it also might be thanks to the wrecking ball's history. Demolition has always made a great spectacle. Demolition at the time was a skilled trade, Byles, who wrote a book on the subject , adds:. Demolition was construction in reverse: fixtures and appliances were sold; wood studs and flooring pried up, studiously denailed, and tied in bundles for reuse; and bricks cleaned by fiendish characters who could knock the mortar off 5, bricks a day.
Laborious, yes. Wasteful, no.
0コメント