Your figures are correct. But, I'm pretty safe, and I have never seen anyone who pays any attention to the sign on the ladder that tells you not to stand on the rung that is the one below the top of the ladder. So, most people will stand about 5 feet above the floor on a 6-foot ladder. And, contractors will stand on the top of the ladder. I understand that ladder manufacturers are sued more than any other company. So, I think the warning labels on ladders are probably written by high paid lawyers.
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