Ok, I just had a look at the UIAA websight, and the test that they use, found here under #101, dynamic ropes (look at the pictorial link, not the text link):
http://www.uiaa.ch/?c=310
States that the static elongation for a single rope should not exceed 10% (12% for double ropes).
Mabye the blue water page is out of date?
Tris |