Wind is reportedly the second most common cause for tower crane accidents worldwide.

Part 1 of a 2 part series on crane rigging and wind hazards in the construction industry and built environment

This article was first published by the KHL Group LLP and is republished here with permission of the authors. © 2019 KHL Group LLP.

Know the wind. It’s a simple but profound statement for crane operators. The fact is that wind is the second most common cause for crane accidents worldwide. The American National Standards Institute (ANSI) reported that “…between 2000 and 2010, there were 1,125 tower crane accidents reported worldwide, resulting in more than 780 deaths. One of the main culprits behind these tragedies was exposure to wind, which caused 23 percent of all accidents.”1

Wind Forces

While being able to track wind speed is important, ANSI stresses, “…the primary concern related to the forces that wind exerts on a tower crane’s load is not the speed of the wind, but its pressure. Wind pressure varies as the square of the wind speed, so, as wind speed doubles, the wind pressure increases by a factor of four times. This means that a small increase in wind speed can severely threaten the safe performance of a tower crane.”1

So how can an operator effectively and accurately track the atmospheric changes impacting their work environment? One answer may be the TriSonica Mini, a three-dimensional ultrasonic anemometer that can fit in the palm of your hand.

The TriSonica Mini uses ultrasonic measurements to tell users exactly how fast the wind is moving — from the lightest breath to a stormy gale — and in what direction it moves: up, down, front, back or sideways. It also tells the temperature of the air, the compass heading relative to the device, the moisture borne in the wind, the density of the air and dew point, according to the manufacturer.

Even a small increase in wind speed can threaten the safe performance of a crane.

More in the next blog post about crane rigging and wind hazards in the construction industry and built environment…

1 Kelechava, Brad (2016, July 7). Wind Effect on Tower Cranes. Retrieved from

(Source: “Rigging for Wind.” Edited by KHL Group LLP, KHL, KHL Group LLP, 10 Jan. 2019,

About KHL Group

Established in 1989, KHL Group is the leading supplier of international construction information in the world. It has achieved rapid growth through market focus and an intense knowledge of the world market. Editorial quality and independence from commercial pressures is why KHL‘s magazines enjoy a loyal readership which is the foundation of long-term success for a publishing company.

KHL Group is a diversified media company that delivers information in whatever format the market demands. Using its strong market-leading magazine brands, KHL has expanded into digital magazines, newsletters, apps, directories, new media technologies, exhibitions, conferences, awards and contract publishing.

KHL has introduced professional publishing practices to the markets it serves. It was the first publisher in the construction industry to launch a website in the early nineties, and the first to be accredited with the acclaimed BPA International independent circulation audit in specific markets. KHL was also the first publisher in any sector to offer digital magazines, and to have those subscriptions independently audited. KHL constantly monitors growth markets and offers advertisers proven and trustworthy routes to their customers within those markets.

KHL Group, and any of its individual titles, are members of the following associations:

Off-Highway Research became part of KHL Group in 2015. Diesel & Gas Turbine Publication Group became part of KHL Group in 2018. In 2010 KHL Group won the prestigious Queen’s Award for International Enterprise.


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