Question about rope

[mb0099]

I'm relatively new here so I hope I'm not posting in the wrong place.
When you buy packaged rope (not the kind you have cut to your desired length from a spool) and you cut it, does that lower the rated working limit? I'm other words, if I cut a 15 ft double braided nylon dock line with a 650lbs working limit, does cutting it reduce that working limit? Wondering if that weight limited is based on the length and not being cut for some reason.

 

[ABSOLUTION]

It's the diameter of the rope that matters. The working capacity isn't affected by the length.
So as long you leave a reasonable amount of rope from where you cut it to the load bearing knots you're tying (important for something like a braided rope), it shouldn't affect it's strength.

Based on this article and this article, the mentions of breaking strength don't account for the length of the rope. So you should be fine as long as you do a proper clean cut.

I'm not a rope expert though, please don't take my word as gospel.

 

[mb0099]

It's the diameter of the rope that matters. The working capacity isn't affected by the length.
So as long you leave a reasonable amount of rope from where you cut it to the load bearing knots you're tying (important for something like a braided rope), it shouldn't affect it's strength.

Based on this article and this article, the mentions of breaking strength don't account for the length of the rope. So you should be fine as long as you do a proper clean cut.

I'm not a rope expert though, please don't take my word as gospel.

Can you please further explain "So as long you leave a reasonable amount of rope from where you cut it to the load bearing knots you're tying (important for something like a braided rope), it shouldn't affect it's strength."? What's a reasonable amount of rope? Unfortunately my anchor isn't very high, just a small step ladder to reach it, and the braided rope is 15ft so I'd have to cut off roughly half

 

[ABSOLUTION]

What's a reasonable amount of rope?

Consider the following diagram:

I hope that makes sense. That would ensure that your knot wouldn't come undone somehow from the cut.

the braided rope is 15ft so I'd have to cut off roughly half

Maybe you could scrunch up the excess rope into a ball or something and secure it together with tape to keep it out of the way rather than cutting it if that's feasible. But if you cut the rope properly and tie the knot securely there shouldn't be any issues with the rope breaking or the knot coming undone.

I hope that helps!

 

[Worndown]

No. It is still as strong. Unless you weigh 600 pounds, don't worry about it.

 

[mb0099]

Consider the following diagram:
View attachment 117278
I hope that makes sense. That would ensure that your knot wouldn't come undone somehow from the cut.

Maybe you could scrunch up the excess rope into a ball or something and secure it together with tape to keep it out of the way rather than cutting it if that's feasible. But if you cut the rope properly and tie the knot securely there shouldn't be any issues with the rope breaking or the knot coming undone.

I hope that helps!

Thank you. The knot at the anchor, unless I need to change something, isn't a concern, concern is the rope itself breaking or the knot around the noose.

 

[CW36]

Thank you. The knot at the anchor, unless I need to change something, isn't a concern, concern is the rope itself breaking or the knot around the noose.

Absolution is right buddy, it's the diameter of the rope that matters, not the length of it. The integrity of the rope is the same if it's 10 metres or two.

 

[mb0099]

Absolution is right buddy, it's the diameter of the rope that matters, not the length of it. The integrity of the rope is the same if it's 10 metres or two.

The integrity (exact word I was looking for) isn't less even if you cut it with less than ideal tools? I don't have a hot knife, torch, or anything like that, options are a utility knife, cutters used for branches, or kitchen knife and the rope (double braided nylon dock line) is on thicker side.