I don’t think there is anyone in the construction industry that has a better marketing department than Priestly Demolition, a demolition specialty contractor based in Ontario, Canada. Their Youtube channel is filled with high quality demolition videos in the form of timelapse videos and even a 24 minute long, highly detailed video of a bridge demolition so impressive it won awards for best in the world. Implosion videos are a great source of entertainment in their own right, but the videos that Priestly put out are not only entertaining, but also great for education purposes.
Their most recent demolition video is a 10-minute, narrated video, which explains how the team demolished a bridge over the Severn waterway without allowing any concrete to fall into the river. In order to do so, Priestly had to install a barge underneath the bridge to catch debris and also act as a platform for the heavy equipment. An additional “catch-all material” was also installed on each side of the barge to catch any material that could fall off the platform.
Safety was a top priority during the demolition, especially due to the freezing water that workers will be surrounded by in the cold Canadian winter. The barge was equipped with guardrail all around it, workers were required to wear life vests, and emergency boats were always close by in case someone fell in.
The arched bridges were first dismantled on top, reducing the total weight as much as possible, without damaging the support structures below. The process would ensure that the barge does not collapse due to too much weight collapsing onto it. Once the first bridge demolition was completed, the barge platforms were unhooked from each other and allowed to float south to a second, smaller bridge.
All in all, it was an interesting look at a demolition process that had to take into consideration a lot of different challenges. What did you think of the process? Tell us in the comments below!
Falls on the jobsite is the leading cause of injuries and fatalities in construction. Keeping up with housekeeping on your site is a great way to reduce risks of falls, but other protections, like rebar caps should be installed when rebar is exposed. A young construction worker recently found out the hard way what happens when rebar is left exposed.
Completed in 1976, the CN Tower in Toronto, Canada held the record for the tallest freestanding structure in the world from 1975-2007, until it was supplanted by Dubai’s Burj Khalifa. At its highest point, the CN Tower, which is mainly used as a communications and observation tower, reaches 1,815.4 feet (533.33m). Last year, the tower underwent a $16 million renovation and Priestly Demolition shared a fascinating, in-depth video for how they took care of the demolition of the interior space and walls.
Cranes collapsing on-site are serious business, especially since many of them resulted in the loss of life. A recent crane collapse on a construction site in Alpharetta, GA was caught on camera after it caught fire, but luckily no one was injured.
There are a lot of different specialty construction contracting sectors within the industry and cruise ships are definitely one of them. There are plenty of unique challenges when dealing with a moving ship versus a static building. A recent accident highlighted the challenges when a crane collapsed on a cruise ship under renovations, injuring 8 people.
Almost 7 years ago, construction began on the west side of Manhattan’s $20 billion mixed-use development. On March 15, 2019, Hudson Yards, as the development is known, has officially opened.
Demolitions by implosion can be fun to watch when they go right – or wrong – but nearby residents can be greatly affected by the high powered blasts and huge clouds of debris that follow. A few years ago, a botched demolition in England left dozens of nearby residents unable to return to their homes for several days. Last week, an obsolete Steel Basic Oxygen Plant in Weirton, West Virginia is leaving residents in a similar situation.
Traditional safety training for construction workers includes OSHA 10-hour or 30-hour courses, toolbox talks, and safety inspections. Those training techniques are all important and necessary, but construction workers are an extremely hands-on group of individuals and putting them in real life situations can be much more beneficial to them instead of classroom training.
Over the years, Liebherr, the German Crane Manufacturer, has given us some absolutely amazing videos. For example, they put on a show for their best customers one year and lifted one crane with another crane, which was lifted by a third crane, which was then lifted by a fourth crane. Another video highlighted the 58 cranes that were on site at the same time at the world’s largest airport build in Istanbul. Well, the company is back at it again, this time on top of Europe’s new tallest building.
When we think about historic buildings of ancient times that are still standing, we can stand in awe of the level of detail that was incorporated into designs without modern tools and technology. For a few decades, it seemed like we would never see that type of character in buildings again, but sports stadiums are becoming new modern wonders, pushing the limits of not only what’s capable from a construction standpoint, but also the budgets.