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Two load charts, same crane, I picked the wrong one every time
Last month in Jacksonville I ran a 130-ton Liebherr for a week straight and kept second-guessing my pick radius. The manufacturer's chart in the cab was fine, but the site engineer handed me a printout from the rental company that had slightly different numbers. I compared them side by side on day three and realized the rental sheet dropped the boom angle limits by 4 degrees to be "safe." That small change made my lifts look impossible when they were actually well within spec. Has anyone else had to deal with conflicting charts from the same machine?
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gray624d ago
Ran into the same thing on a 90-ton Grove last spring. The rental company sent out their own laminated chart with the outrigger spread bumped wider than the actual setting we were using, which cut my capacity almost in half at a 40 foot radius. I ended up calling the rental yard and the guy admitted they just use one generic chart for all their 90s no matter the serial number. Wasted half a day re-rigging for a pick that was well inside the factory numbers the whole time.
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