crane lifting safety tips

Top Takeaway:

Wind is a major hazard when working at height, even on days that seem calm. Be prepared by keeping objects and tools that are not in use well secured, and always wear the appropriate PPE for the job you’re doing.

Windy days can make working at height dangerous for everyone on the job-site. Strong gusts
can cause you to lose balance, blow tools and materials off of platforms, and weaken structures. Follow these best practices to ensure a safe job-site, no matter the weather.

DO Use a wind meter.

General wind readings are usually taken at ground level and cover a large area, like a city or
neighborhood. This makes them a useful tool for planning, but they don’t provide enough
information to ensure safety on your job-site, especially when heights are involved. Wind speeds
can increase by up to 50% at 20 meters above ground, which means a manageable breeze on
the ground can translate to near gale force winds at height. Use one of our NAVIS wind meters
to get accurate readings that reflect how your site is affected by gusts and how the surrounding
buildings and landscapes are influencing wind currents.

DON’T Underestimate gusts.

Even on calm days, gust of wind are still hazardous, as they can come out of nowhere and
travel up to two times faster than the average wind-speed. Again, use a wind meter to monitor
conditions, as you may need to quit working at height if gusts are too strong, and store
materials and tools securely when not in use.

DO Treat flat materials with caution.

Flat materials like sheets of plywood can easily turn into sails if hit by strong enough winds,
and can drag people off heights or fall onto those working below. On windy or gusty days, make
sure to carry flat materials horizontally in pairs and secure them tightly when not in use.

DON’T React to blowing objects.

Strong winds can blow away tools, hard hats, papers, and more, but at height it’s important to
fight the immediate urge to catch blowing objects. It sounds counter-intuitive but reacting too
quickly could cause you to lose your balance or could distract you from other hazards blowing
toward you. If something begins to blow away, take a beat before retrieving it to ensure you can
do so in a safe way.

DO wear the right Personal Protection Equipment (PPE).

The right PPE could make the difference between a close call and a trip to the hospital. Wear eye
protection on breezy days to keep out dust and debris, and make sure your hard hat is securely fastened to keep it from blowing off your head. Most importantly, always wear a harness at heights of 1.5 meters and above, as 30% of fatal falls happen at heights of 2 meters or lower, and 50% happen at 3 meters or less.

DON’T Make covers without holes.

It may be tempting to create a sheltered area in windy conditions (especially if they’re coupled with
cold weather) but like sheets of material, covers made of tarp or plywood can tear away whatever anchor or platform they’re attached to if caught by a strong enough wind. We don’t recommend making these kinds of shelters, but if you must make a cover for yourself, cut holes in it to allow the wind to pass through without carry it away.

DO Know when to stop working.

Losing a day of work is manageable, losing a co-worker to injury or worse is not. Create a plan to deal with windy conditions. We’ve found Wilkins Safety Group’s Beaufort Scale Safety Guide, which details
the precautions that should be taken at various wind speeds, is an extremely helpful tool in creating
this plan.

DON’T Assume, inspect your structures.

Strong winds over extended periods of time can cause structures to weaken or lean at unsafe angles.
Always check over scaffolding, platforms and their anchor points after a wind storm to ensure they are
still secure to work on, and that nothing has shifted that will cause them to fall or collapse.

Click here to learn more about wind safety devices. 

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hoist operator training vancouver
Navis anemometer

Phoenix Fabricators and Erectors needed to cut a 100-foot water tank, add a 40-foot extension, then put the suspended piece back on. For a company with more than 30 years of experience in constructing, installing, renovating and rebuilding large above-ground water tanks across the US, the project should have been routine.

It was anything but. Call it a perfect storm combining hazards and challenges that most project engineers do their best to avoid. “We were limited by sight constraints,” says Kurt Fuller, Engineer of Record for Phoenix. “Our three large cranes had limited mobility and were set up on a very tight work site. On top of that, we were directly adjacent to a community high school.”

To read the full case study, click here.

For more information about the NAVIS Anemometer systems, click here.

Windy smartphone anemometer

Safety is paramount on any production set and in an industry where getting just the right shot can make all the difference, that safety is even more critical when people and equipment are being lifted high in the air.

To read the full case study, click here.

For more information about the NAVIS Anemometer systems, click here.

Wind anemometer

California’s Jim Ramsay entered the Extreme Benchrest competition as an amateur marksman but he finished it by besting the pros. His not-so-secret weapon? A Navis Wireless Wind Speed Sensor. Even more impressive was that it was his first time in competition and he had less than two months to practice.

What is Extreme Benchrest?

Extreme Benchrest is an annual rifle competition held in Arizona and hosted by Airguns of Arizona and the Phoenix Airgun Club. Benchrest refers to the gun sitting on a gun rest, meaning the operator isn’t standing or sitting, isolating all the variables. “The competition comes down to trigger control, breathing, gun performance and individual interaction with the gun,” says Jim. “The biggest factor is the wind.” In the competition, all participants qualify at 75 yards. Four relays are held, two for each category. The top ten from each round are chosen to compete on the final day of competition at 100 yards. The target consists of concentric circles, with the largest circle being 5.25 inches in diameter. The closer a participant is to the center (a bullseye roughly the size of an aspirin tablet), the higher the score.

Measuring Wind Speed

Up until now, measuring wind speed at a rifle competition was done mainly through the use of wind flags. This is a skill in itself since it takes a lot of training and experience to equate the flags to a miles per hour figure. “Ballistics programs take into account wind speed, miles per hour and wind direction,” says Jim. This calculates a wind adjustment value. Jim wanted to apply that same principle in the competition and began by looking for equipment measuring wind speed that would be used in construction. He wanted a wireless one for the shooting range so it could transmit data back to his smartphone. An online search turned up Navis along with the supplier, BigfootCrane. “Even from reading the brochure online, it seemed to be exactly what I needed so I got a system sent out to me.”

What Set Navis Apart

The most valuable part of the software, Jim says, is being able to see a running average with a history over the previous two minutes. This let him gauge where the averages were occurring. When it came to Extreme Benchrest, he was able to base his calculations on the average then adjust for that particular, which gave him a very qualified window of opportunity. “There was definite strategy involved. I could watch the running history to see much I had to adjust, just by using the sighters to see when the wind speed would return.” Jim figures he was the only person using the Navis Wind Speed Sensor technology at the competition. One competitor had a hand-held anemometer but it was mounted to his rifle scope, which meant he was measuring wind there rather than at the target. This would preclude him from being able to factor in other variables like speed or velocity. Jim set his Navis anemometer at the one-third mark, which is where he believed the most influential winds were located. “Ideally, you want to have the system close enough to accurately characterize wind environment but not next to the table where you’ll get disturbances as the wind flows around things.”

“The Navis Wireless Wind Speed Sensor performed even better than I expected, providing me with accurate real-time information right in the palm of my hand.”

Hitting the Mark

After the competition ended, Jim was asked if what he was using was a weather station. It only took a few minutes to explain what he had and how it worked. Not surprisingly, he ended up exchanging contact information with people who wanted to follow up with him at a later time. He noted that while several of the pros belong to an older demographic, there were younger members of the crowd who were only too eager to embrace the latest technology. “The Navis Wireless Wind Speed Sensor was a big hit with everyone but I really appreciated it at a completely different level because I hadn’t had time to fully train using the wind flag system.”

Focused on the 10-ring. Wind system visible downrange     Wind system with winning target and gold medal!

To read the full case study, click here.

For more information about the NAVIS Wireless Wind Speed Sensor, click here.