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IFSTA Chapter 7
Ropes and Knots
| Question | Answer |
|---|---|
| What are the two classifications of fire service rope? | A-life safety and utility rope |
| All life safety rope must conform to what NFPA standard? | A-NFPA 1983 standard on life safety rope and equipment for emergency services |
| Most natural fiber ropes are made of? | A-hemp (manila or sisal) or cotton |
| What type of rope is used in most rope-rescue incidents...think stretch? | A-static (low stretch) |
| Under NFPA 10 static rope can stretch how far? | A-no more than 10% when tested under a load equal to 10% of its breaking strength. |
| Dimensions of light-use rope? | A-life safety rope, 3/8-1/2”....intended to support one person, minimum breaking strength of almost 4500 lbs, max safe working load limit of 300 lbs. |
| Dimensions of general use rope? | A-life safety rope, 7/16-5/8”....intended to support two people, minimum breaking strength of almost 9000 lbs, max safe working load limit of 600 lbs. |
| Dimensions of throwline? | A-life safety rope, 19/64-3/8”....used to tether rescuers during water rescues or to throw to a victim in the water, minimum breaking strength of nearly 3000 lbs and max safe working load limit of 200 lbs. |
| Dimensions of escape rope? | A-not considered life safety or utility, 19/64-3/8”....intended to be used only one time and then destroyed. |
| What are the four types of rope? | A-Kernmantle, Laid (twisted), Braided, Braid on Braid |
| This rope is composed of a braided covering or sheath over a core of main load bearing strands? | A-kernmantle |
| The core of kernmantle rope is made of high-strength fibers, usually nylon and accounts for what percentage of its total strength? | A- 75% |
| This rope is constructed by twisting yarns together to form strands? | A-Laid |
| This rope is constructed by uniformly intertwining strands of rope together? | A-Braided |
| The sheath of this rope has a herringbone-pattern appearance. | A-braid on braid |
| Unused ropes should be inspected how often? | A-At least annually |
| Rope should be inspected how often? | A-after every use. |
| How should laid rope be inspected? | A-It should be untwisted and checked internally for flaws. |
| How and where should a rope log be stored? | A-The log should be kept in a waterproof envelope and placed in a pocket that is usually sewn on the side of the rope’s storage bag. |
| Most webbing used for lifting and pulling operations start at about what width? | A-2” |
| What is the running end of a rope? | A-The free end that is used for hoisting, puling, or belaying. |
| What is the working end of a rope? | A-The end tied to the object being raised, lowered, or stabilized. |
| What is the standing part of a rope? | A-the section between the working end and the running end. |
| This is formed by simply bending the rope back on itself while keeping the sides parallel? | A-A bight |
| This is made by crossing the side of a bight over the standing part? | A-A loop |
| This consists of further bending of a rope on one side of a loop? | A-A round turn. |
| This knot is easily tied and untied and is good for forming a single loop that will not constrict the object it is placed around. | A-bowline |
| This knot is always used in conjunction with another knot. It is particularly useful in stabilizing tall objects that are being hoisted. | A-half hitch |
| This knots principal use is to attach a rope to an object such as a pole, post, or hoseline. | A-clove hitch |
| A figure eight bend is also known as a.......? | A-flemish bend |
| Used on life safety rope to tie ropes of equal diameter together. | A-figure eight bend |
| Is used to join two ropes of unequal diameters or a rope and a chain. | A- becket bend. |
| A becket bend is also known as a ...... | A-sheet bend |
| What knot is used to join two pieces of webbing together? | A-water knot |
| How is a ladder tied off for hoisting? | A-tie a bowline or figure eight on a bight and slip it first through two rungs of the ladder about one third of the way down from the top....then pull the loop up and over the top of the ladder. |
| What class of harness is also known as a seat harness, fastens around the waist and thighs or under the buttocks and is intended to be used for emergency escape? What is it rated for? | A-class 1 harness....up to 300 lbs |
| Fastens in the same manner as a class I harness but is rated for up to 600 lbs. | A-Class II harness |
| Also known as a full body harness, fastens around the waist, around the thighs or under the buttocks and over the shoulders. What is it rated for? | A-Class III harness, 600 lbs. |
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951bruin