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:
Mistakes during demolitions happen. Sometimes contractors knock down the wrong buildings, other times the explosives used don’t knock the building over, and other demolitions are carried out with a complete lack of regard for human life. As fun as they are to perform and watch, they’re inherently dangerous and there should be a plan in place in case things go wrong.
Construction sites can often be some pretty spooky places, especially when unexpected items and creatures, like human remains, are found on the property. They can also be the site of some heavy superstition, like at several projects in Iceland that were believed to be delayed by hidden elves. But, according to one contractor, there’s something especially spooky about the childhood home of serial killer Ted Bundy.
Cranes collapse for a variety of different reasons. Some are overloaded, some catch on fire, and others succumb to high wind loads. Regardless of the reason, a falling crane can cause tons of damage and have the potential to kill on-site workers and pedestrians walking near the job site.
A recent crawler crane collapse in Northern Italy could have been much worse as the crane, carrying a large section of viaduct, crashed to the ground.
On January 1, 2017, OSHA officially put into effect a revision to workplace injury and illness reporting that requires certain employers to submit recorded information of these instances electronically. Companies were to submit all of this information from the previous year (2016) by July 1, 2017, but now that due date is in jeopardy.
There’s no shortage of company’s trying to improve the world’s roadways. Asphalt and concrete each have their own disadvantages, especially when maintenance environmental factors are taken into consideration. Plastic is a major problem for landfills, as well, as it can take an estimated 500 years to fully decompose. One UK company believes they can solve both maintenance and environmental problems through the use of recycled plastic.
According to the US Department of Labor (US DOL), the construction industry has the highest rate of current drug users (15.6%) as compared to any other industry in the United States. As the city of New York grapples with trying to reduce their alarming rate of injuries and fatalities on construction sites, the New York chapter of the Associated Builders and Contractors (ABC) has proposed that lawmakers add mandatory drug and alcohol testing for construction workers to the law books, according to the New York Daily News.
Feeling the pressure of 9 straight quarters with a decline in total revenue, Caterpillar has acquired the equipment sharing startup, Yard Club, to get help dig themselves out of the dirt. Their most recent quarter was the company’s first positive revenue quarter since November of 2012.
I’m a firm believer that before robots start taking over construction jobs, we’ll first be working with robotics to make workers more efficient and our job sites more functional. Instead of using 3D printing robots to build an entire project, why not use them first to create intricate details and bring character back to buildings? Instead of pushing human labor out of the way, why not use robotics to enhance the abilities of our workers, to improve their health and productivity? With rise in development commercial exoskeletons, workers will soon be able to harness additional strength by just slipping on a suit.
Traffic in Atlanta sucks, there’s really no other way to say it. So imagine the tough position commuters and city officials were put in when a bridge of a major highway on the north side of the city caught fire on March 20, 2017 and was damaged beyond repair. 243,000 motorists were forced to find alternate routes to work for the estimated 3 months that it was going to take to rebuild it. Now, imagine how thrilled they were when the highway opened back up one month ahead of schedule.
Last year, Tesla announced a new disruptive product to the market in the form of solar roof shingles. Unlike traditional solar roof panels, these shingles mimic the look of traditional terra cotta, clay, and slate tiles, creating a more aesthetically pleasing look. This week, the company began taking pre-orders for the roof shingles and also released a cost calculator.