IUOE Training Center Installs Tower Crane with Engineered Crane Pads

The International Union of Operating Engineers (IUOE) Training Center in Crosby, Texas, has installed a new self-erecting tower crane supported by engineered crane pads, following updates to its training equipment and site preparation.

The facility recently added a Potain IGO T99 self-erecting tower crane, replacing a smaller IGO T70 model. The upgrade prompted a reassessment of ground conditions and supporting materials to accommodate increased corner loads, or ground bearing pressure exerted by the crane’s outriggers.

To address these requirements, the training center implemented ground improvements, including the addition of crushed limestone, and selected EcoMax crane pads from DICA. The pads were chosen based on engineering analysis to help distribute loads within acceptable limits.

“The industry has come to expect professional, engineered outrigger pads,” said John Callahan, training and equipment assistant at the training center. “This is safer than using whatever materials you have on hand on a job site because you know that this set of pads is intended for use with that specific crane and are designed to handle the loads.”

According to Chad Jacobs, tower crane specialist at Stephenson Equipment, the factors influencing corner loading on the IGO T99 are comparable to those of mobile cranes. “The crane is supported on four outriggers, and the total corner load is primarily influenced by the combination of lifted load and wind or jib line forces. These factors work together to determine how the load is distributed across each outrigger.”

DICA conducted an assessment using crane manufacturer data, including maximum outrigger reaction force and outrigger float dimensions, along with site conditions. Based on this evaluation, the company recommended the EM2-64 EcoMax crane pad, which provides 24 square feet of support area.

The EcoMax design incorporates steel I-beams and fiber-reinforced composite materials to enhance stiffness and durability, while its construction is intended to support load distribution across the pad surface.

The IUOE Training Center uses the site to train apprentices in crane operation, provide instruction on crane assembly and disassembly for journeymen and deliver training programs for instructors. The facility has incorporated various crane support and safety products since opening in 2018.

“DICA’s products hold up to the Texas heat and sun, even better than some of our cranes,” said Callahan. “There’s no shade and they stay out in the yard most of the year. I like the steel and composite combination and being able to see how the crane pad is made.”

The updated crane setup reflects ongoing adjustments to equipment and support systems as training centers align with evolving crane specifications and jobsite requirements.