Chapter 16 And Knots Flashcards
List 8 defects that might be found during rope inspection that would require a rope to be retired.
a) Cuts
b) excessive fraying
c) puffs
d) pulled or herniated fibers
e) abrasions
f) changes in diameter
g) discoloration
h) glazing of fibers
Before climbing a tree, a climber should inspect the tree for 5 hazards such as
a) Broken limbs
b) dead limbs
c) electrical hazards
d) decay
e) splits
True/False
The load on any piece of climbing or rigging equipment can be many times higher than the weight of the climber or the limb being rigged
True
The ____ ____ reported by the manufacturer is the breaking strength of a rope or piece of hardware
Tensile strength
Climbers may also choose to use a ____–____ device when tying in. This can reduce the wear on the rope and damage to the tree and can, in some cases, facilitate climbing.
friction–saving
A ____–____ knot is often tied in the tail from the climbing hitch as a ____ ____ to prevent the end from going through climbing hitch.
figure-8
stopper knot
A ____ is a type of knot used to secure a rope around an object, another rope, or the standing part of the same rope. A ____ joins two rope ends together.
Hitch
Bend
Two methods of using a climbing line to ascend a tree are ____–____ and ____ _____.
body-thrust
secured footlock
True/False
When footlocking, putting the hands on or above the Prusik hitch could cause it to slide down the climbing line, creating a fall.
True
Because ____ ____ can damage a tree, they are approved for use only on trees to be removed or for aerial rescues.
Climbing spurs
For added stability and safety, a climber should be secured with a ____–____ ____ in addition to the climbing line when using a chainsaw in a tree.
work positioning lanyard (or another line)
True/False
The most important factor in any aerial rescue situation is speed–getting the victim to the ground in the shortest amount of time possible.
False
_____ is the use of ropes and other equipment to take down trees or remove limbs.
Rigging
____–____ ropes are not recommended for natural–crotch rigging, where the friction of the cover with the tree causes an imbalance in the load taken by the core and cover braids.
double-braid
The ____ ____ of a rope is the tensile strength divided by the working-load limit.
design factor
Carabiners must always be loaded along their ____ ____, and never across the gate
major axis
____ ____ are heavy duty pulleys with a large, rotating sheave for the lowering line, and a smaller fixed sheave to accept a rope sling. In contrast, ____ ____ are designed for static, overhead rigging, where the loads are known and very low friction is required.
Arborist blocks
rescue pulleys
True/False
Natural crotches can be fast and effective for use as a rigging point, but a consistent friction and versatility of placement of an arborist block is often a great advantage.
True
When a piece must be removed without dropping either the butt or tip, it can be tied so it is ____, then lowered to the ground
balanced
A technique in which a piece is tied above the point where it will be cut, and the line is run through a block or crotch below the cut is called ____ ____.
butt hitching
The ____ ____ is the classic three-point cut, which dates back to the early years of arboriculture.
drop cut
The ____ ____ is a variation of a standard tree felling techniques that employs the use of a notch and back cut to form a hinge and “steer” the limb.
hinge cut
The ____ ____ is the primary climbing hitch used by tree climbers in the United States.
Tautline hitch
Blake’s hitch is more preferred than the tautline hitch because it provides more ____ ____ and does not ____ _____.
uniform friction
roll out
This is used as a stopper knot and end-line knot.
Figure-8
The ____ ____ is used to attach a loop or length of rope to a carabiner, ring, or another rope
girth hitch
The _____ is a strong knot for forming a loop and easy to untie.
bowline
Which knot functions as a slip knot and can be tied around something that is far away and “run up” the line?
running bowline
Which knot is used to send equipment up to a climber and can be tied in the middle of a line?
midline clove hitch
The ____ ____ ____ is used to tie off limbs or sections of wood. It is backed up with at least ____ ____ ____.
Endline clove hitch with two half hitches
One of the easiest and most useful knots for climbers is the ____ ____.
slip knot
The ____ ____ is used to join 2 ropes of different diameters together.
sheet bend
The grapevine knot’s primary purpose is to form a Prusik loop or as a termination knot for attaching a climbing line to a carabiner. Also known as a blank ____ ____ ____.
double fisherman’s bend
The ____ ____ is a bi-directional friction hitch used in both climbing and rigging.
Prusik hitch
This knot is tied with an eye sling and used for securing hardware to a tree,
cow hitch with half hitch
The ____ ____ is tied with a sling and used for securing hardware onto trees too large for a cow hitch.
Timber hitch
This knot is used to tie off a section when butt-hitching or lowering limbs or when there is no secure point for a running bowline.
Half hitch and running bowline
The ____ ____ is a variation of the hinge cut and used to take a vertical top out of a tree.
topping cut
