Chapter 9: Ropes /Ties & Equipment Hoisting Flashcards
knots that we must know
Bowline Figure 8 Figure 8 retrace Figure 8 on a bite Figure 8 inline
Bends we must know
Ring Bend
Double overhand Bend
Hitches we must know
Clove hitch
Prusik Hitch
Half Hitch
Snake Hitch
1 of 2 Rope Construction Material used by EFRS
Nylon Synthetic Fibers: ggh claw good: good abrasion, good shock loading, high breaking strength, continuous strands low rate of degradation allows for a variety of rope construction will not rot, bad: low acid,bleach, UV resistance, loses 10-15% when wet
you will NOT find natural fibers in EFRS
2 of 2 Rope Construction Material used by EFRS
Polyolefin
good: floats, continuous strands, good acid resistance
Bad: low abrasion and UV resistance, melting point of 60% nylon, poor shock loading
4 types of Rope Construction
Laid
Braided
Briad on Braid /double braided
Kernmantle
Kernmantle Rope
used as life safety rope
low stretch 2kn = <5% elongation
med = 5-10%
high = >10%
Utility Rope on all Major Units
6mm 30m life/guide line (meet for pt)
10mm 20m Drop Bag (coffee Break)
16mm 45m Heavy utility (start cleanup)
Life Safety Rope
Rescue Halls 1, 4,9, 14, 20
& TR @ 3
All Rescues: 2 Rope Bags 1 red 1 blue: 13mm 60m life safety rope Main/Belay
TR: 6: 2 x Main, 2 x Break, 2 x Haul : 13mm 60m LSR.
TR: 2: rope bags w/ 13mm 100m LSR
5 Rope Size & Strengths
6mm : 9.7 kn 8mm : 14 kn 9mm : 16 kn 11.1mm : 27 kn 13mm : 46 kn
Rope Log Book
ID # Manufacture & lot # Date of Purchase Date of Service Rope Diameter and Length Construction Type
Date of use type of use Incident location and Incident # Inspection Date & inspectors name /initials Rope condition and comments date and type of washing date of retirement and level
Webbing
25mm tubular construction, 17.5kn in rescue bage 2 green 1.5m 2 yellow 3.5m 2 blue 4.5m 2 red 6m
orange 6m
5 Characteristics of a good tie
easy to tie easy to untie easily inspected secure once tied will not slip under load Minimum strength loss in rope
Tying Terms
Bight: rope doubled on its self
Loop: rope crosses its self to form a circle
Round Turn: rope wrapped 2 or more times on its self
Parts of a rope
Working end: where the tie takes place
Standing part: part used to acend or decend
Running End: unused rope in bag
KNOT Def.
a rope intertwined within its self in a predetermined configuration
Bend Def.
Tie used to join 2 pieces of rope or webbing together
HITCH Def.
Configuration of rope that need an object within it to retain it integrity
When hoisting tools
Working end up first on long tools, handle firts with axe
use tag line
8 rules of rope usage
do not step on rope protect from abrasion points do not over load never tow with LSR Do not over bend ( maintain 4 x rope radius) Do Not leave ties in rope store properly protect from falling objects protect from heat
Visual Inspection of Rope
Look for Discoloration Rope Is uniform in Diameter Excessive Fraying Excessive Dirt or Grit Exposed Core Fibers
Physical Inspection of Rope
- note stiffening of fibers within the rope
- Feel for inconsistencies in rope diameter
- feel for soft areas or bulges by running rope through short bend radius
- feel for dirt or grit with in the kern