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!
It’s a tale (tail) as old as time: a horse walks into a construction trench, gets stuck, has to be lifted out of it by a helicopter. The trench didn’t appear to be that deep, so I don’t think OSHA is going to need to get involved with this one.
Demolitions by implosion seems like the easiest way to knock down a structure, but there is so much preparation that goes into it that even the slightest mistake can have a huge impact. When smokestacks are demolished correctly, it can be a thing of beauty, like when these two silos in Scotland hit each other midair or when this asbestos filled stack was precisely demolished to fall into a pool of water. Things didn’t go so smoothly for demolition crews in Denmark last week, however.
Crane collapses on construction jobsites are usually pretty terrifying, especially when the jobsite is full of workers. A construction site in St. Petersburg, Florida got extremely lucky when a large construction crane collapsed and narrowly missed several running workers.
As we’ve seen in the past, demolitions aren’t all about implosions. There are still many manual demolitions that are carried out by skilled excavator operators. The Victoria Street Bridge in Ontario, Canada is a recent example of that.
This video is a bit of a throwback, but I recently came across it on the interwebs for the first time and thought it was worth a share.
It’s been a while since we have shared a demolition video on Construction Junkie. We recently discussed a very high profile demolition project, the tallest voluntary demolition on record, which is schedule to start next year and how it is expected to happen, but no videos. Between the cold weather in most of the country and the general lack of interesting demolitions happening, it’s good to finally be back to feeling normal around here.
It’s pretty amazing the work that can get done when a lot of resources and money are thrown at one project. Past examples of this include a gigantic sinkhole that was repaired in Japan in just under a week, the complete emergency rebuild of Atlanta’s I-85 overpass that was completed a month ahead of schedule, and this video of 116 excavators working side by side to demolish a 1,640 foot long overpass overnight.
Cameras are EVERYWHERE these days. They’re on sites documenting the full construction process of your project, they’re on projects taking 360 degree progress footage, and most importantly, they’re in your pocket on your smartphone. Having a camera in your pocket at all times can be a good or bad thing, especially for employers, because not only can it make lives much easier for communication and documentation purposes, but it also gives people the chance to show the world when things go absolutely terribly.
With cranes being on many construction sites, it’s easy for workers to get complacent. Hundreds or thousands of construction materials can be lifted by cranes throughout the project, but all it takes is one time for a disaster to occur.
In regards to timelapse videos, it was a big year for sports arenas and the city of Atlanta, Georgia. These types of videos have become more popular in recent years due to the wide availability of documentation services available. Not only that, but civilians who own drones have also taking a liking to their area’s construction sites.
Take a look below at our 7 favorite construction timelapse videos from 2017: