Last year, we shared a video of 6 Scottish high rise buildings that were imploded simultaneously, which was one of our favorite demolition videos of 2015. The problem, however, was that only 4 of them actually fell completely, causing delays as crews had to use high reach machinery to complete the job.
When the Red Roads high rise residential flats were built in the 1960s, they were actually the tallest of their kind in Europe. After a few decades of deterioration, the buildings had to be removed and they put on quite the show doing so. If you haven’t seen it before, you can check out the video, uploaded to Youtube by Green hand gang, below (NSFW language at 9 second mark):
As you can see, two of the buildings failed to fall, one still standing 11 stories high and the other standing 13 stories high. After months of investigation into the failure, the cause has finally been determined. According to BBC News, the main issue was the inconsistencies in construction records. Safedem, the demolition contractor, noted in the report that the 50 year old drawings stated the steel inside the buildings was considerably smaller than what had actually been installed, causing them to underestimate the “robustness” of the building. The report also states that “Safedem had carried out detailed surveys and noted a number of discrepancies between the surveyed buildings and the design drawings and therefore appear to have followed good practice.” Because of the discovery of discrepancies, the agency that completed the report also explained that the company could have done more to err on the side of caution, especially with regards to pre-weakening the structures.
The clearing of the site is still set to be complete on schedule in 2017.
Full story: Glasgow's Red Road tower blocks 'too tough' for blast demolition | BBC
New demolition videos are always fun to watch. You know what’s even better, though? A bunch of demolitions all at once.
While being prepared for demolition, the Grand Avenue Bridge in Glenwood Springs, Colorado unexpectedly collapsed to the railroad tracks below. Thankfully, no injuries were reported, but the local police chief said that workers had to flee the scene once the bridge section started to fall.
Smoke stack demolitions are always fun to watch because they typically stand much taller than the buildings surrounding them, giving cameras great views of the carnage. They don’t always go well, like when a 2.6 million pound brick stack fell directly on top of an excavator (the operator was fine, by the way), but they’re always dramatic.
Buildings are demolished all the time in order to make way for new construction. The buildings that are demolished have usually lived out their useful life and are no longer functional. Recently a demolition video resurfaced, which shows a 27 story building in China being imploded. The strange thing is that, since it was finished in 1999, the building had never even been used.
A nearby office worker caught video of a dramatic demolition that showed the remains of an 11 story building collapse on top of the excavator performing the demolition.
In order to get the bad taste of last week’s botched demolition, in which an adjacent building also got destroyed in the process, we needed to share a highly successful one. Priestly Demolition, a Canadian demolition contractor, has been the subject of our articles in the past and the company has even won awards for the best demolition in the world.
Mistakes during demolitions happen. Sometimes contractors knock down the wrong buildings, other times the explosives used don’t knock the building over, and other demolitions are carried out with a complete lack of regard for human life. As fun as they are to perform and watch, they’re inherently dangerous and there should be a plan in place in case things go wrong.
Construction Junkie has shared a lot of demolition videos. Typically, people line up waiting for the moment when the building explodes with their eyes peeled and cameras ready, just waiting for the perfect video. This video, however, is much different.
Early this year, a landslide caused catastrophic failure to the Pfeiffer Canyon Bridge along California’s famous Highway 1. California Transit officials closed the bridge on February 21st and announced it would be demolished and replaced. Time is of the essence as US News reports that over 400 residents are stranded on one side of the bridge and helicopters have had to bring in food for them. The residents are still able to use the footpaths in the area to cross the canyon.
There’s no doubt that bridge demolitions by implosion are extremely fun to watch, but the fireworks show and big splash into the water below can sometimes overshadow other demolition projects that don’t allow implosion. Priestly Demolition Inc. (PDI) recently won two 2016 World Demolition Awards for one of those projects where implosion was not an option and they have also produced an incredibly detailed video of how they did it.