There’s nothing better than a big glass of water filled with ice on a hot summer day. Concrete may feel the same way, also.
Weather is one of the most important factors during any concrete placement and when placed in hot weather, quality can be greatly diminished if the proper precautions are not taken. The Portland Cement Association estimates that, for every 20 degrees Fahrenheit of increased ambient temperature, the curing time of concrete can be reduced by as much as half. This decreased amount of work-ability time can put stress on a crew to complete the finishing work before it hardens and increase the risk of cracking. The PCA also suggests that steps be taken to reduce hot weather effects when ambient temperatures rise above 77 degrees Fahrenheit and especially after temperatures reach 90 degrees.
One way crews are keeping the temperature of their concrete cooler on hot days is to use ice. In fact, construction crews are using so much ice in Charlotte, North Carolina, that it’s becoming local business Zippy Ice’s fastest growing sector, as well as their highest source of revenue, according to a TWC News story. The ice they produce is 22 degrees, which is sure to be able to bring the temperature of a concrete mix down to more manageable levels. Before dropping chucks of ice into your mix, however, it’s worth noting that ASTM C1602 requires that ice be completely melted by the time mixing is complete. Depending on the amount of ice used and the ambient temperature, it may be better to purchase larger or smaller pieces of ice, or wait until it’s melted before adding it to the mixer. You should also enlist the help of an engineer to help you determine the amount of ice needed.
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.