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Back in the day, we never used to rely so much on the load chart alone.
I see a lot of new operators just look at the chart and think they're good to go. They forget about the ground. I was on a site in Tacoma about 8 months ago where a guy set up on what looked like solid fill, but it was just a thin crust over mud. His chart said he could lift it, but the outriggers sank 6 inches on the first pick. We used to walk the site first, feel it with a bar, and know the history. Now it's all about the screen in the cab. Has anyone else had to stop a lift because the ground wasn't right, even when the numbers looked fine?
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dixon.ryan21h ago
Honestly, sometimes I wonder if this is overblown. A good chart and modern gear have built-in safety margins for a reason. That Tacoma thing sounds bad, but how often does a crust over mud actually happen on a prepared site? Most places I've been, the ground is either clearly good or clearly trash. If you're sinking 6 inches, you probably ignored way bigger red flags than just the chart. It feels like an old-timer thing to act like every lift is a mystery.
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phoenixp9018h ago
You said it feels like an old-timer thing, but that's not it. I see it differently. That crust over mud situation is more common than you'd think, especially on old industrial lots that get a fresh layer of gravel. The chart can't tell you what's under the mat. I've seen plenty of lifts where the numbers were green but the ground started to weep water on the first swing. Relying only on the screen is how you get a surprise.
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