Remember when we used to eyeball the chart for every lift?

I was on a job in Tacoma last month setting a 12-ton generator on a tight pad. The old head who trained me always said to add 10% to the chart weight for rigging, so I did. The crane started to tip. Turns out the new charts from the 2023 manual already have that safety factor built in, so I was double counting. Learned to always check which version of the load chart you're using. Anyone else run into this with the newer gear?

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3 Comments

joel_young6mo ago

My old foreman in Spokane still adds 15% to every chart, new or old. Sometimes that extra margin is what keeps you out of trouble when the ground is soft.

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burns.richard6mo ago

Wait, isn't that just a safety factor?

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kim_martin6mo ago

Guess that's why they call it the tipping point.

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