Rock Products

MAY 2018

Rock Products is the aggregates industry's leading source for market analysis and technology solutions, delivering critical content focusing on aggregates-processing equipment; operational efficiencies; management best practices; comprehensive market

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46 • ROCK products • May 2018 Trailer Safety W e know to wear hardhats when working under over- head hazards or around conveyor belts, and harnesses and lanyards should be worn when working at elevated heights, but preparing for hazards that are not always easy to spot can be more challenging. Such is the case when haul- ing heavy equipment. Choose the Right Trailer When it comes to heavy-haul trailers, optimizing the safety of drivers and others doesn't begin once you've starting rolling down the road; it should happen during the planning process. One of the most important steps in trailer safety is to ensure the trailer you're using to haul equipment, whether it's a crusher, conveyor or excavator, is built to handle the load. Because then, and only then, will the risk of structural failure as well as associated accidents and injuries, be eliminated. Capacity: The first thing to consider is capacity. This isn't just how much a trailer can hold, but rather the rated weight, or load concentration, within its deck length. A 30-ft., 60-ton lowbed can haul 60 tons, but how much of the deck those 60 tons occupy is just as important as the weight itself. One manufacturer might rate the entire length of the deck at 60 tons, while another might rate its trailer for 60 tons in a 16-ft. span, and another that same weight in half the deck length. Also, be familiar with state laws and regulations, such as bridge laws and kingpin-to-axle distance guidelines, as these can limit where a driver can go with what kind of trailer. Safety Rating: Uneven ground, chuckholes and railroad tracks all put stress on a trailer. A safety rating tells us how much of this stress it can safely handle. Historically, magnification of payload weight on a trailer due to road dynamics is a 1.8 to 1 ratio. On average, the stress placed on a 50-ton-rated trailer by a 50-ton load when the rig hits those bumps, chucks and tracks equals 1.8 times 50 tons, or 90 tons. Heavy Duty Hauling Ensuring Safety When Hauling Portable Plants and Other Heavy Equipment. By Troy Geisler For the most capacity and smallest impact on the trailer weight, some manufacturers use a T1 material with 100,000-psi minimum yield. T1 not only has maximum strength versus ductility, but also equates to a lighter, stronger trailer frame over other materials.

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