Rope. To Find The Breaking Wright Of An Ordinary Tarred Hemp Rope
Description
This section is from the book "The Tinman's Manual And Builder's And Mechanic's Handbook", by Isaac Ridler Butt. Also available from Amazon: The Tinman's Manual And Builder's And Mechanic's Handbook.
Rope. To Find The Breaking Wright Of An Ordinary Tarred Hemp Rope
(Circumference, Ins.)2 ÷ 5 = Breaking Weight, Tons
A rope should not be loaded with more than 1-3 its breaking weight.
To find Weight of Rope or Tarred Cordage.
(Circumference ins.)2 X Length, ft. ÷ 24 = Weight, lbs. Or,
(Circumference ins.)2 ÷ 4 = Weight, lbs. per fathom.
To find Weight of Tarred Hawser or Manilla Rope.
(Circumference ins.)2 ÷ 5 = Weight, lbs. per fathom.
To find Weight of Hawser-Laid Manilla.
(Circumference ins.)2 ÷ 6 = Weight, lbs. per fathom.
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