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.
Overall, Oregon was in the middle of the pack with regards to hourly wage for the 25 construction professions analyzed, with an average ranking of 18. However, the Northwest state has the 3rd highest cost of living, according to MERIC, as it costs 31% more to live there versus the average state.
The construction industry has never been one to freely share information without charging a fee. That’s changed slightly recently, with some major players willing to provide useful tools and information to help us become better. For instance, we recently shared that Procore has released hundreds of free continuing education courses on their education platform. Another useful site we’ve found recently has shared dozens of toolbox talks to help your team on the jobsite learn about safety.
[guest post] The reality is that construction workers, who already face hundreds of hazards just by working in the industry, are also often at risk for becoming injured or ill due to contact with wildlife.
Back in 2015, engineers at MX3D made a huge announcement: they were going to 3D print a steel pedestrian bridge on-site. That plan has been altered slightly in the nearly 3 years since the announcement, but the group recently completed printing the full span of the bridge.
Maryland is ranked 7th in highest cost of living wages according to MERIC, which dropped their overall hourly wage ranking from around 20th to the 48th ranked state.
Demolitions by implosion seems like the easiest way to knock down a structure, but there is so much preparation that goes into it that even the slightest mistake can have a huge impact. When smokestacks are demolished correctly, it can be a thing of beauty, like when these two silos in Scotland hit each other midair or when this asbestos filled stack was precisely demolished to fall into a pool of water. Things didn’t go so smoothly for demolition crews in Denmark last week, however.
It should be obvious that formal safety training is extremely important to running a successful safety program on any construction site. The most common route for construction employers to train their staff is through OSHA 10 and OSHA 30 courses, but, in the past, it was pretty confusing to determine who was actually authorized to teach the courses and where to find them.
[guest post] Spring is here and before we know it, summer will follow. In both seasons, weather conditions can present dangers to construction workers. Without education and preparation, workers may find that they are seriously ill or injured during work.
California fell victim to its extremely high cost of living, much like Hawaii did.