One of the challenges with construction is determining how your work can and will affect the existing conditions surrounding your job site. That’s why it’s increasingly important to not only perform proper due diligence procedures, but also react to the findings. That, unfortunately, doesn’t always happen and could potentially be what caused a massive sinkhole in Fukuoka, Japan, last week.
Around 5:15am local time, a 98 foot (30m) by 88 foot (27m) section of roadway was completely swallowed by a sinkhole. As crews were working on an underground subway line directly beneath the road, groundwater began to flow into the tunnel, according to the Asahi Shimbun. Shortly after, the road above began to collapse, exposing a flowing sewer line under the pavement. Luckily, no injuries were reported, but hundreds of residents and businesses were without power or gas, as the nearby utilities were compromised. Due to fear of the sinkhole growing, city officials ordered the hole to be filled in later that afternoon.
Perhaps even more astonishing, repairs have been made to all the utilities and the pavement in a week’s time, as the road was opened back up to the public on November 15th. After the hole was filled in, it only took crews 48 hours to repair the utilities and re-pave the roads, according to CNN. The 50 foot (15m) deep hole took roughly 8,100 cubic yards (6,200 cubic meters) of a sand and cement mixture, which the mayor of Fukuoka says is now 30 times stronger than before, reported the Guardian.
The video below was uploaded to Youtube by ODN:
A construction crane that was working on a highway widening project in St. Martin Parish in Louisiana collapsed onto the adjacent roadway last week, injuring one driver.
Demolition by implosion videos are always fun to watch. Adding an element of water makes them even more dramatic, though it’s probably not great for the ecosystem. Late last week, a one mile long, 23 year-old bridge in China was imploded in front of a crowd of spectators and caught on camera.
Cranes are an extremely useful and important piece of equipment on the majority of construction sites. They can also be extremely dangerous if they are not understood or respected.
As the US is experiencing our own natural disaster, by way of Hurricane Florence, China is being hit badly by a Typhoon Mangkhut. According to Independent, the storm has caused a crane, which was being used on a 22-story housing development, to crumble. That collapse was caught on camera by neighbors.
There have been a few devastating structural collapses across America and the world this year. In March, an under construction pedestrian bridge collapsed in Florida, killing 6. In Colombia, ten workers were killed when a large section of a bridge being built collapsed. Both of those tragedies happened while the structures were still being built, but a recent collapse in Texas has a bit of a different story.
If you’re a general contractor in the Davie, Florida area, I have an idea why one of your deliveries might have been late last week.
On Monday morning, a 13 story building in Miami Beach that was being prepped for demolition suddenly collapsed, injuring one Project Manager that was struck by debris.
In January of 2018, ten construction workers were killed and another eight were injured when a bridge spanning the Chirajara canyon in Columbia partially collapsed. That collapse has since been blamed on a poor design, reports have stated. Last week, the remaining sections of the bridge were demolished in dramatic fashion.
A 47 year old crane operator is facing charges of driving while intoxicated and leaving the scene of an accident after driving a truck mounted crane into several vehicles on the Long Island Expressway in New York.