Last week, Japanese construction workers earned plenty of praise after they were able to repair a gigantic 90 foot by 88 foot by 50 foot sinkhole that formed in Fukuoka, Japan in the middle of a 5 lane road in under a week. A timelapse video of the repair can be watched by clicking here. This week, CNN reported that the road had to be closed again after it began to sink again.
According to the reports, sections of the repaired road sunk up to 2.7 inches (7cm) in some areas causing some public concern. The road has since been reopened, but the road sinking like this should not be a huge surprise, especially to those on the earthwork side of things. After having to fill the hole with roughly 200,000 cubic feet of soil in such a short period of time, it was not possible for the soil to reach peak compaction. Each cubic foot of soil can weigh between 74 and 110 pounds, so, using a conservative estimate of 92 pounds per cubic foot, that’s equals almost 20 million pounds of material. That extreme amount of weight is bound to cause some considerable settling.
The mayor of Fukuoka, Takashima Soichiro, took to Facebook to apologize to the residents for not warning them the road may sink again. It has since been reopened, but the settlement could continue for a while longer. The city recently sustained an earthquake, which measured a 3 on the Richter scale, which may have also contributed to the drop.
You can watch the video of the repair, by Hakata,JAPAN LOVE, again below:
Construction Safety is talked about constantly. There are many construction companies that take it very seriously. There are also many that don’t. All will say it’s their top priority.
So what can a city do that’s facing regular worker deaths and increases in workplace injuries? New York City has decided to require extensive safety training for all of the 185,000 construction workers in the city.
Modular building makes a lot of sense: build repetitive structures in a controlled, factory-like setting and transport to the project site and assemble. It should be a more efficient and less expensive way to construct a building, but the truth is, it’s a lot harder than it looks. There’s also no written standard for doing it.
Masonry workers, specifically brick and block masons, have been around for centuries and are one of the construction industries oldest professions. Before blocks were prefabricated and purchased, masons had to cut the material by hand before placing. Recently, robotic brick and block placing robots have threatened to take some jobs away from human masons, but that technology is still a long way away from making a huge impact on the profession
Concrete can adapt to any shape its formwork calls for while it’s being placed. While it’s POSSIBLE to make intricate designs with the material, it’s not always easy or practical to do so. Researchers from ETH Zurich have designed a new method of forming and placing an ultra-thin, curved concrete roof system that they plan on installing on a construction project next year.
According to the Workzonesafety.com, nearly half (46%) of all work zone-associated worker fatalities from 2003-2010 were caused by being struck by a vehicle. Surprisingly, only around 2% of those workers were killed by a drunk driver. From 2003 to 2015 (the last year this data was updated), a total of 1324 work zone fatalities have been recorded, which averages to about 102 per year.
Residents living near a Jersey City, New Jersey construction site were frightened as they watched “explosions” of smoke coming out of holes in the ground.
For almost 80 years, the Old Kosciuszko Bridge connected Brooklyn and Queens in New York. Much like many other bridges its age, it is being replaced due to capacity issues and deterioration. When it was completed in 1939, it was built for 10,000 cars per day. Unfortunately for the people who needed to use that bridge that past few decades, around 180,000 cars used it.
[sponsored] With the hottest of the summer months behind us, we are moving into the cooler months of autumn on the jobsite. While Helly Hansen is frequently seen on snowy slopes and high seas, their tradition of quality and protection actually originated in premium workwear.
The immense technological growth the construction industry has seen in the past decade has been a refreshing change, to say the least. Fax machines, large filing cabinets, and redundant work are slowly becoming a thing of the past. More importantly, software developers are actually paying attention to the construction industry, making our lives collectively easier, while giving us more data to make better decisions. Bluebeam, maker of one of the industry’s favorite construction document software, has recently announced a wireless digital sensor specifically for under construction buildings.
Portable toilets are the setting for many pranks around a construction site, but I never thought there could be something worse than just getting stuck in one. Turns out I was extremely wrong, because a worker in New Orleans was run over by a dump truck while using the port-a-john.