Rope through joist braces

[10monty]

I've got rope loops going through some of the braces under the floor upstairs and have no idea why. I've had 4 trades in who have never seen it before.
It's a 1985 timber frame house and I don't think this floor has ever been up since it was built til now
This is just out of curiosity, can't see any reason for them being there

 

[big-all]

look like carry handles
as in make in a remote location carry over and drop in ??

 

[10monty]

That's sort of what I thought initially but they're only in the end braces in the room and then not on every one.

 

[big-all]

last ones to go in so an exact gap to fit in [pinched fingers ??]

 

[micric]

Timber frame house, I would say lifting points for made off site floor cassettes.

 

[^woody^]

I thought I would know this one, but a frayed knot.