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Forum Index : Windmills : Working load of steel cable

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imsmooth

Senior Member

Joined: 07/02/2008
Location: United States
Posts: 214

Posted: 02:59am 11 Feb 2009

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I have 1/4" galavanized cable. I have seen slight variations for the working load and breaking strength. I believe the WL for my cable is 1400lbs. I have seen breaking strengths listed from 6000lbs to 7000lbs. My question is what safety factor do most of the riggers on this board use? Is using 25% of the breaking strength acceptable? Is 30% ok?

birdhouse
Regular Member

Joined: 27/01/2009
Location: United States
Posts: 63

Posted: 04:23am 11 Feb 2009

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hey imsmooth-
i am no rigger, but my truck winch is rated for 9,500lbs with aircraft grade 3/8" galvo cable, but the breaking strength is 14,400lbs. it is made by mile marker. just an example of how a corporation trusts outside cable suppliers. i know this is not apples to apples, but it may help you.

good luck!

i pee more than once before flushing, and don't have to flush at all up at the ranch!

Tinker

Guru

Joined: 07/11/2007
Location: Australia
Posts: 1904

Posted: 12:50pm 11 Feb 2009

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The safety factor depends a lot on what you use the cable for. Enlighten us please.

Klaus

DaViD

Senior Member

Joined: 14/01/2009
Location: United States
Posts: 120

Posted: 01:31pm 11 Feb 2009

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Its like tinker said about what its used for, and how its made is it a 1x7,1x17,1x19 construction etc.
As a general rule (most manufactures not all) recommend no more than 20% of breaking strength

If you know who made it you might be able to look it up on the net.
Dave

If your not living on the edge your taking up to much space!

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