Term
| Materials used to make rope fall under what two classifications? |
|
Definition
|
|
Term
| What type of natural materials are used to construct rope? |
|
Definition
| Sisal, Cotton, and Manila |
|
|
Term
| What synthetic materials are used to construct rope? |
|
Definition
| Nylon, Polyester, Polypropylene, and Polyethylene |
|
|
Term
| The vast majority of fire departments used natural ropes up until which decade? |
|
Definition
|
|
Term
| What are some of the many disadvantages of using natural material to construct ropes? |
|
Definition
| Rotting, mildew, abrasion, natural deterioration and degradation over time, low strength to to weight ratio, and low shock absorbtion |
|
|
Term
| What are the advantages of using synthetic materials to construct ropes? |
|
Definition
| Resists mildew and natural degradation from age, more resistant to abrasion, higher strength to weight ratio, greater shock load absorbtion, higher resistance to acids(with the exception of Nylon), and no permanent loss of strength from becoming wet |
|
|
Term
| This synthetic material was invented in 1938 by E.I. DuPont de Nemours and Company, does not float in water, is vulnerable to acids and loses up to 25% of strength when it is wet or frozen? |
|
Definition
|
|
Term
| This synthetic material used to construct rope unlike nylon has a strong resistance to acids and alkalis, has low elongation under load and whose strength is not negatively affected by being wet or frozen? |
|
Definition
| Polyester (Polyester's low elongation characteristic has a direct correlation with its ability to handle shock loading...it can't) |
|
|
Term
| Ropes constructed of this synthetic material are primarly used for water rescue because it floats and water has no effect on its strength? |
|
Definition
| Polypropylene (has a low melting point, low resistance to abrasion, is susceptible to damage from sunlight, and has a low breaking point) |
|
|
Term
| Three modern construction techniques used in making rope? |
|
Definition
| Laid (twisted), Braided, Braid-on-Braid, and Kernmantle |
|
|
Term
| The most common construction method for natural fiber ropes is? |
|
Definition
|
|
Term
| The construction of this form of rope accentutes spinning, twisting, and possibly knotting? |
|
Definition
|
|
Term
| This type of rope construction used predominately with synthetic fibers (sometimes natural) is formed by weaving small bundles of fibers together (similar to braiding hair) and is smooth to the touch? |
|
Definition
|
|
Term
| This type of construction often results in a 50/50 split in strength between core and sheath, resulting in a rope which is quite dynamic (stretchy), but is susceptible to damage from abrasion? |
|
Definition
|
|
Term
| Making sure that all the parts of the knot are lying in the proper orientation is called? |
|
Definition
|
|
Term
| When tying webbing, only one type of knot is common. This knot is called a _____ knot? |
|
Definition
|
|
Term
| Which NFPA document set the minimum standards for rope used by firefighters during the performance of their duties? |
|
Definition
|
|
Term
| What are the differences between static and dynamic rope? |
|
Definition
| Dynamic rope has a high degree of elongation at normal safe working loads and static rope has very little elongation at normal safe working loads. |
|
|
Term
| The length of a rope is divided into what three sections? |
|
Definition
| 1) Working End 2) Standing Part 3) Running End |
|
|
Term
| When tying a knot the finishing step that ensures the knot is snug in all directions of pull is called? |
|
Definition
|
|
Term
| This knot is almost always used in conjuction with some other knot and is used to maintain the proper orientation of the object being hoisted? |
|
Definition
|
|
Term
| Knot used to attach rope to an object such as a pole, tree, tool hoseline, or fence post? |
|
Definition
|
|
Term
| These two knots are used for tying two ropes together. |
|
Definition
| The Becket Bend and teh Double Becket Bend |
|
|
Term
| In the OFD how many more times can a life saftey rope be used after it's first use? |
|
Definition
| None...a life safety rope is put out of service after it's first use. then made into utility rope in the OFD |
|
|
Term
| What type of rope is used for life saftey in the OFD and why? |
|
Definition
Dynamic rope b/c it elongates upon shock (sudden increase of pressure on rope)
Static rope does not stretch much and may cause injury if person comes to sudden stop while on rope |
|
|
Term
|
Definition
amount of load a rope can hold before it fails.
in the OFD tinsel strength of rope must be 4500 pounds for one person before it begins to fail |
|
|
Term
| What are the lengths and width of life saftey ropes used on the trucks of OFD? |
|
Definition
length:150' & 300'
width:5/8" |
|
|
