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:
All trench collapse deaths are preventable. As soon as everyone on a job site starts believing that we might actually make some progress. In just the past 10 days, there have been 4 trench collapse deaths across 3 separate incidents, further highlighting how far we still need to go.
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.
As smartphones and tablets are slowly becoming one of the most prominent and powerful tools on construction site, construction technology companies are still largely focusing on construction management firms and general contractors. What’s lost on many is the fact that there are dozens of subcontractors on every jobsite that also need to manage their projects.
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.
On April 3, a congressional appropriations hearing was held to discuss the U.S. Department of Labor’s Federal funding for fiscal year 2020. During the hearing, the secretary of Labor, R. Alexander Acosta, told the committee how OSHA plans to spend their budget and how the agency fared in the previous year.
A 58-story condominium tower currently under construction has found itself embroiled in a legal battle after the former General Contractor filed a lawsuit against the developer, citing the fact that the building is now “leaning” 3 inches to the north.
Safety training in the construction industry is necessary to build worker awareness – not to mention that it’s legally required – but it can be extremely time consuming and expensive to have completed. There are many companies out there looking to make money off of keeping workers safe, which is why it’s great when a company offers training free of charge, like Procore’s Safety Qualified program.
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.
Each year, the American Road & Transportation Builders Association (ARTBA) puts out their annual Bridge Report, which highlights the general state of America’s bridges. Their recently released 2019 report shows that we’re making progress on the structurally deficient bridges across the country, but the association is not satisfied with the speed of repairs.
Late last year, CAT Phones released their first ever smartphone on a US carrier network, the S48c. The phone is currently available on both the Sprint and Verizon Networks and I was recently able to test out the phone to get some better insight into how it operates. Overall, it offers the toughness to hold up to a jobsite at a reasonable price, but continue reading to hear about all of the details.