Shared Flashcard Set

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Related Science
Plumbing Level One
22
Computer Science
Graduate
07/24/2009

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Cards

Term
The Cross section of the fiber rope in Fig 1 shows that this size rope have __ yarns
Definition
12
Term
The inside of a rope should be continuously inspected for broken yarns by throwing a twist_____ the rope
Definition
out of
Term
Name the fastening method which prevents any fraying and does not increase the size of the end of the rope
Definition
whipping or seizing
Term
Why should a back splice be avoided when reeving a block and tackle system?
Definition
The eye of the rope is enlarged,it is not easily reeved into a block
Term
A permanent type loop may be made in the end of a rope by forming an___ splice
Definition
Eye
Term
When making this type of splice which is the answer to Question 5 tucking should be in direction _____ the lay of the rope
Definition
opposite to
Term
Two characteristics of the manila
Definition
lower strength
subject to rot and mildew
Term
Four Characteristics for Polypylene
Definition
floats
Lower strength than nylon
Resistance to rot and mildew
Poor conductor of electricity
Term
Four Characteristics of Nylon
Definition
High breaking Strength
Absorbs shock load
Excellent felxibility
Resistance to rot
Term
Eight things to look for when inspecting
Definition
Exterior broken
cuts
abrasion
reduction in diameter
unlaying
wear on the interior of the rope resulting in a powder like dust
splices properly sized and tapered
thimbles fitted tightly in the splice
damage from acid
Term
Soft laid rope is the type that should be chosen for duty with blocks or sheaves
Definition
False
Term
Regular right laid rope should be uncoiled in a counter clockwise direction
Definition
True
Term
it is a good idea to lubricate rope occasionally if it is cleaned first
Definition
False
Term
Jerking a rope while hoisting a load is good practice if a jerk is necessary to start the load moving
Definition
False
Term
When ropes used as guy lines are exposed to weather, they should be slacked off in wet weather
Definition
True
Term
Seizing of manila rope can be easier than seixing synthetic rope because manila rope will melt before it begins to burn
Definition
True
Term
List the four major requirements of rope fastening.
Definition
1. Security against slippage
2. suitablity and strength
3. Ease of tying
4. Ease of untying
Term
Name the three rope parts used in tying knots and hitches.
Definition
1. running end
2. standing part
3. The bight
Term
A mistake made in tying the square knot may result either in a ___ knot or a _____ knot.
Definition
Granny / Thief
Term
When a loop is needed at any point between the ends of a rope, wheat is the proper knot to tie?
Definition
Bowline on a bright
Term
Name the knot that is easier to untie and is larger and stronger than the overhand knot.
Definition
Figure eight knot
Term
Compard to the strength of a rope , how much strength do knots usually develop?
Definition
50-60%
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