BOOK 29 TRUCK OPERATIONS MANUAL CHAPTER 8 ROPE SYSTEMS Flashcards
The main line rope is?
300’ low stretch static kernmantle with blue or red stripes running through it
the belay line rope is?
200’(now 300)low stretch 1/2 inch static kernmantle rope, orange in color,
what class harness does the lafd carry
class III
How man class III harnesses does the engine company carry
2 size large
How man class III harnesses does the truck company carry
3; one small/medium two larges
how many accessory chords are in the two line rope system. what are their dimensions
two 20’ 8mm
what do the accessory chords (20’) build
LRH
how many brake bar racks
2
how many bars are on the brake bar rack
6 aluminum bars
how many carabineers
8 steel “D” shaped carabiners
the long prussik dimensions and how many?
Two 8-mm x 6 foot accessory cord
the short prussik dimensions and how many?
Two 8-mm x 5 foot accessory cord
blue 1 inch tubular webbing how many and how long
Two. 5 feet in length
Two pieces of yellow 1 inch tubular webbing. how long?
12 feet in length
Two pieces of red 1 inch tubular webbing. how long
20 feet in length
how many record inspection sheets
two. one for each rope
anchor strap with “D” rings at both ends
One 2 inch x 7 foot
color and length of multi loop webbing
Two pieces of yellow multi-loop webbing 3 foot in length
1/2 inch KM-III static kernmantle rope is constructed of a tightly woven sheath (_____), over a
braided core (___).
mantle
kern
The high strength core (Kern) can carry up to ___% of the load with the cover
(Mantle) designed primarily for protection against abrasion.
90%
This rope is rated at _______ pounds and
weighs ___ pounds per –100 feet, which meets or exceeds the NFPA ____ standard for one and two -
person rescues.
10,000
7
1995
To determine the safe working load
of a rope, you divide the manufacturers rated tensile strength by the NFPA safety factor of
15
The best way to remove dirt particles from a rope is to place the rope in a
Mesh bag or pillowcase
place rope in a washing machine on _____ cycle and wash in ____ water. Use a mild chemical free soap such as ______ ____, _____ _____ or ______, in the wash cycle.
Gentle cycle
Cold water
Lifeline cleaner, ivory snow, or woolite
Rope ends should be swapped end for end
Annually
All synthetic fibers are prone to some degradation due to prolonged exposure to
ultra violet radiation (UV).
Protect ropes and software from extended contact with chemicals containing ______, _______ agents, ______ compounds, and acids.
Alkaline, oxidizing agents, bleaching compounds
The KM-III static kernmantle rope has a melting point of
450
Approved markers for rope are
Carter MARKS-A LOT, Stanford SHARPIE and Binney-Smith MAGIC MARKER.
The midpoint of the rope should be marked with
one black stripe.
Log the rope as soon as you receive it, log all training, emergency incidents and monthly checks on form
975
During your monthly checks, or if any of the following problems exist, call _____ and be guided by there instructions.
US&R 88
Red nylon bag with pockets for the
Main line
Orange nylon bag with pockets
Safety / Belay Line.
The end of the rope shall be secured to the bottom of the bag by tying a
figure eight stopper.
Is constructed of a single layer of material, it is similar to our ladder straps. It is less expensive, but stiffer
Flat webbing
Two types of tubular webbing
Edge stitched
Spiral weave
Edge Stitched: Is formed by folding over flat webbing ______, and _______ he two-sides together.
Lengthwise
Stitching
Spiral Weave (also known as “_____ ______ ________”): This design of the tubular webbing is the standard in rope rescue operations.
Shuttle loom construction
There are various widths for webbing ranging from
½ inch up to 2 inches
The webbing used by LAFD is ____ spiral weaved tubular and folded over flat webbing rated at ____ pounds. LAFD webbing comes in the following lengths:
1”
4000
The accessory cord purchased by the LAFD is rated at
3630 pounds
The basic parts of a carabiner include the
spine, hinge, gate, and latch.
The “D” shaped carabiner is designed to carry the load along the
spine side.
Carabiners are designed to be lock with only
light finger tightness.
Never tighten a carabiner using _____ _____.
Never re-tighten a carabiner when the system is ______. This may damage the locking mechanism.
Never _____ ____a carabiner.
Channel locks
Loaded
Side load
Brake bar rack
The welded eye, on one end, is used for attachment and is rated at ______pounds.
10,000 pounds
For a single person load (rappel or lower), start with
4 bars
For a two-person loads, start with
5 bars
Rescuers have the option as to the number of bars they choose to use. The maximum would be ___, and the minimum should never be less than ______ during any operation
Six
Three
Wrap the rope _____ over the yoke and through the brake bar rack pulling the bars together. Tie the rope off with two _______ in front of the brake bar rack.
Twice
Half-hitches
Periodic checks should be made of the _______, and to insure the rack is not bent.
Welded eye
Figure eight plates come with or without
Ears
FIGURE EIGHT PLATE
Use for
rappelling and lowering systems.
Rappelling or lowering operations over ____ feet a brake bar rack should be used, due to the twisting of the rope.
75
are used to reduce friction on turns, and allow you to build mechanical advantage systems.
Pulleys
The strength of the rope is restored fully when placed over a turn of a pulley that is at least ____ times the diameter or the rope.
Four times
Pulleys can have stainless steel or aluminum ____ ____, with single or double sheaves.
Side plates
LAFD carries two types of pulleys: The 2 ½ inch _____ _____ _____, and the 4 inch _______ ______.
Aluminum prusik minding
Stainless steel
There are two types of rear strap supports, one with a ______ for fall protection, and one with just the back support.
“D” ring
The main line is connected to the
“D” ring.
The belay / safety line is connected to the
chest “D” ring.
Pulling on a rope in a straight line until it breaks gives us the
TENSILE STRENGTH
is measured by the percentage of rope strength that remains after a knot is tied in the rope.
KNOT EFFICIENCY
Many of the knots used in the department’s rope rescue systems belong to the ______ family of knots.
Figure-eight
_______ knot can be used to tie off knots in webbing (seat harness) and in making other knots.
Overhand knot
is used to create a load releasing hitch and supply friction in all types of rope systems.
The munter hitch
has a variety of uses to secure your webbing / rope to an anchor and secure a nozzle using a drop bag.
The girth hitch / larks foot
is used in many applications e.g. extinguisher and crow bar.
The clove hitch
The figure eight knot is also known as a
stopper knot.
FIGURE EIGHT STOPPER KNOT
KNOT EFFICIENCY
75%
is used to tie the end of a rope around an anchor.
The figure eight follow through
FIGURE EIGHT FOLLOW THROUGH
KNOT EFFICIENCY
80%
FIGURE EIGHT ON A BIGHT
KNOT EFFICIENCY
80%
FIGURE EIGHT BEND
KNOT EFFICIENCY
80%
DOUBLE FIGURE EIGHT ON A BIGHT
KNOT EFFICIENCY
80%
DOUBLE OVERHAND BEND OR “DOUBLE FISHERMAN”
KNOT EFFICIENCY
80%
When accessory cord is tied into prusik loops, the cord used should not be less than ____inch, or more than ___ the diameter of the rope it is to be tied on.
1/2”
2/3”
Either the __ foot or __ foot length may be used for single prusik applications.
5 or 6
When using tandem prusiks, the prusiks must be of different lengths, one __ foot and one __ foot.
5
6
This is a good knot for attaching two equal or unequal diameter ropes together. It is also used to back up bowlines.
DOUBLE OVERHAND BEND OR “DOUBLE FISHERMAN
WATER KNOT / OVERHAND BEND
KNOT EFFICIENCY
65%
use to put a loop in the end of a length of webbing. T
OVERHAND LOOP
TENSIONLESS HITCH OR “NO KNOT”
HITCH EFFICIENCY
100%
BOWLINE
KNOT EFFICIENCY
65%
BUTTERFLY KNOT
KNOT EFFICIENCY
75%
is used to tie a loop in the middle of a rope in situations where the ends of the rope may also be carrying a load.
The butterfly knot
This type of hitch is designed to act as a shock absorber when the main line or belay line is shock loaded, or to pass knots through the system.
LOAD RELEASING HITCH
When building a LRH when the munter hitch flips over in the second carabiner. There should be a __ to __ inch space between the carabiners.
4-5”
the munter hitch flips over in the second carabiner. There should be a 4 to 5 inch space between the carabiners. How many times
3-6 times
Anchor systems can be made out of
Webbing or rope
Pickets should be ___ foot in length, ___ inch round _____ _____ preferred.
Three foot
One inch
Steel stock
pickets should be pounded ___ feet into the ground, at a __ degree angle, away from the object.
2’
15 degree
Fence Post: Make sure the post has a
Cap
Single picket Pounds
1-1 pounds
1-1-1 pounds
2-1 pounds
3-2-1 pounds
700
1400
1800
2000
4000
Passing knots
Pass the main line through the brake bar rack until the knot is about _ inches from the bottom of the brake bar rack.
6
Passing knots
Pass the belay line through the tandem prusik belay until the knot is about __ to__ inches from the tandem prusiks.
6 to 10
The lead hand is the one furthest from the ____ ____ on the belay line.
Anchor point
The lead hand will hold the belay line and put a ___turn in the line.
Z turn
Weave the main line through the brake bar rack using a minimum of ____bars, ____bars for two persons.
4 bars
6 bars
If the rescuer is going to be raised back up, the next command from the rescuer is
“Rig to Raise”
Attach a prusik loop utilizing “____wraps” to the main line first, then attach it to the load releasing hitch.
Three
Never get closer than ____ feet to the edge without being tied-off.
5
If you must see over the edge without a rope, crawl up slowly on your ______ and look over.
Stomach
Located along the trapezoid channels at pre-planned rescue sites.
Eyebolt
