Just stumbled across this NFPA 1001 knot test for firefighters in the USA.
Among a great many other tests! --including one for
inspecting & cleaning rope (#FFI-38)!
For example:
#1 'Forms the Bowline knot'... seems odd - this is written as if there is only one (1) type of Bowline - presumably #1010 from 'ABoK'?
Because likely for the test subjects there IS only THE
one such named knot, as had been provided to them
in other materials upon which they're being tested.
One wonders why NFPA test authors did not wish to assess a secure Bowline (eg Scotts locked Bowline)?
/.../
Presumably, the risk of ring-loading is not something the NFPA 1001 drafters considered?
Because they follow (*blindered* by legal concerns, perhaps)
the state of the practice in their industry (which doesn't include
esoteric knot variations coming out of self-built Ivory Towers).
And because they get their secure version by using the
"overhand safety knot" (one can wonder if this is exactly
as stated of possibly a
strangle --though we can note
that the
grapevine / dble.(or sngl) fisherman's knot isN'T
among The Chosen Seven!?
#2 'Forms the clove hitch'... it is not clear if the firefighter has to tie a clove hitch via a 'TIB' method (#1178) or, if the firefighter is permitted to have access to an end (#1245)? Or both methods?
I'll wager on the latter --not all so many
needs of TIB tying, I'd think (though rockclimbers
do this more nearly exclusively, it seems).
#3 'Forms the F8 on-a-bight' - and here a distinction is made. It is via a 'TIB' method. Note that a 'TIB' method wont work if tying an end into a harness (like a rock climber). There is no criteria for achieving a symmetrical form. The way this test is written - a firefighter could tie #1047 F8 with any random geometry?
Looking at examples in magazines of various application
areas & of catalogues of gear targeting such fields,
I'd wager YES --anythinGoes!
ALSO, I'm not so sure that the seeming exact
wording
"on a bight" really implies what you think --vs. just
distinguishing eye knot from end-2-end knot (which
we can note isn't included) !? Though, yes, in the
somewhat related/borrowed-from fields of caving,
rockclimbing, and SAR for both, the knot naming
DOES so signify *TIB* tying (and, most interestingly
to my thinking, there are at least a couple tests of
the
fig.8 eyeknot in which both methods are
used per nominal inclusion, as though the knots
care how they came to be (assuming the some
rigor of "dressing & setting" is followed to achieve
what is NOT a dual but single goal (though, yes,
that lack really of any specific result does put a
wrench into this argument, alas --but we figure
that it's a background thought, anyway).
((TO this (knot geometry/forms/variation), it would be
helpful / edifying to have simple OBSERVATION & a
record of what is actually In The Wild. (One can only
start by noting the variation in the literature(s),
as I refer to above; but in the field, too, it would be
edifying to see what results from various tyers' tying
one way and the other.
MAYBE one would find that, on average, rockclimbers
tying the F8 EK TIB get <this> in X% of cases,
cavers ... in Y%,
SAR ... in Z%.
... and so on.
#4 'Form the half-hitch'...
I'm not wagering on this one. Could be used as a
securing to other knots? Could be a lapse of jargon
and "2 HHitches" is meant?
#5 'Forms the becket or sheet bend'... this appears to be wrongly worded. By definition, a 'becket' is ...
But they're not defining "becket" but using common
knot names. In some readings of history, the
sheet bendbent the sheet to the
clew of a sail, and if one has
a clue to what a clew is, "becket" is apt, here!
(To this, I remarked that Tyrrell E. Biddle's ca. 1880
knots book presents the
sheet bend as a way "to join
ropes quickly" (something like this); and then, next to
it, he births the infamous
"Wot?knot" of my keen
pursuit!
)
#6 'Forms the overhand safety knot'...this could be interpreted in different ways - eg in rock climbing, a safety or backup knot usually means a strangle around an SPart to add security.
Yeah, an "
*op cit*" to this: I, too, wonder.
#7 'Forms the water knot'... it is not stated if this knot is to be tied in rope or flat webbing (or both)? Furthermore, it is known that cyclic loading can lead to catastrophic failure due to progressive creep/slip in flat webbing.
For "flat webbing", read "solid webbing"/"solid tape"
--all webbing is flat(tened)! --unless stuffed with
a rope or something. "solid" vs. "tubular" is the
way to clarity here!
I suspect that this is focused on tying webbing
(I wonder if they ever include making an eye knot
in webbing, TIB?).
If not for rope, then end-2-end comes only via the
sheet bend or interlocked
bowlines.
--dl*
====