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the falling side of the rope is still going to stretch NC or not. And Blair's formula is: force = weight of piece + (weight of piece x number of feet in fall) so 500 lb piece falling 5 feet would be 500 + (5 x 500) = 3000 Distance fallen is from the center of gravity of the piece at the...

Fall factor is not about the actual measurement of the length of fall. It's about a relationship between the distance fallen to the length of the line in the system. The fact that rock climbers and the rescue folks are more concerned about fall factor that distance fallen should tell you...

except for everyone else here let that misstatement about negative rigging being a fall factor of 2 slide. WHY? There is NO WAY that rigging from an overhead block could EVER be a fall factor of 2. Total nonsense and no one here makes a peep. Once again I have to straighten you all out about...

are you sure about that?

Happy to help a brother!

The 1,400 lb WLL of 1/2" line you mentions sounds like it's 20% of the 7,000 lb tensile strength. Your 140 lb pieces sound like 10% of 20%. That's not the way the math is supposed to work, You figure the weight of the piece, plus the added force on the line from a shock load. Then keep that...