how much weight will 1/2 inch cable hold?

Question

Need a 5000lb test lifeline. Looking for a chart of cable rating.

Answer 1

By "test" do you mean breaking strength, or safe working load?
1/2" steel wire rope may have a breaking strength between 20,000 and 30,000lbs depending on construction. A manufacture or dealer of wire rope could give you more detail (I looked in a McMaster Carr catalog)

[EDIT] Chris, first, you are off by probably an order of magnitude or so: "1/2 inch double braided nylon has a working load of 8500lb" 8500lbs is on the high side for the ultimate tensile, working load will be far less.

I suspect the OP is talking about a fixed line that one would clip one's shock absorbing lanyard to. Which brings up the second item, somehow your first link was broken:
http://www.great-lakes-safety-catalog.com/Great%20Lakes%20main%20catalog/new_page_261.htm

And one might note that while far lighter than steel, the very high performance synthetics tend to cost considerably more. From the McMaster catalog (tend to be high priced, but this is for comparison) 1/2" Spectra about $4/ft, Vectran $5.50/ft both high performance synthetics, A 1/2" 1x 7 strand galvanized steel cable is about $1.30/ft, while a 1x7 has very poor flexibility, it might be considered for a static line. A 1/2" galvanized steel 6x37 class IWRC has much better flexibility and cost at about $3.30/ft, but still significantly less than the synthetics. A non galvanized rope would cost even less, but may not be suitable for outdoor use.

Answer 2

Steel Cable Breaking Strength

Answer 3

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Answer 4

1/2 inch double braided nylon has a working load of 8500lb.

If you need strength above all else then try one of the HMPE (High Molecular Weight Polyethelene) synthetic ropes. 7/16 Amsteel Blue will hold 23,600lbs. 3/16 will do 5,400lbs. Amsteel is remarkable stuff, used extensively by the offroad community for winch ropes.

Lifelines are usually synthetic rope, rather than cable. There are some advantages to using nylon, like it doesn't bring you to a sudden stop. Take a look at the first link below, these are lifelines designed to save you without breaking you in half.

(I mean cable as in steel and rope as in not steel, in cordage cable-laid and rope-laid are actually two methods of construction.)

Answer 5

When talking working load limit or WLL you have to put it in context. WLL is a calculation based on a safety factor. Usually this is a minimum of 3:1 for overhead lifting purposes. However, it can be as high as 5:1. So, unless you are planning to use your cable for overhead lifting and know the safety factor WLL is pointless. Minimum break strength is what you are looking for.

The question is for a 5000 lb lifeline. If this is for construction purposes you need to apply OSHA specs and I would suggest going to a contractor supply like WhiteCap or Hub. If this is a belay line (recreational) then I suggest something like 11mm purlon or similar climbing rope.

(Yes I see this is 6 years old but it still shows up on the searches)

Answer 6

Depends on what it is made of and the configuration of its strands.

Check the chart in the link attached.

Answer 7

I don't really know, you can ask in the store.