A6 and C6 Flashcards
Troubleshooting GUIICV
Gather the information Understand the problem Identify how to evaluate the problem Identify the source of the problem Correct/repair/replace the component or wiring Verify the repair
half-splitting
identifying all the circuit components that are on the circuit and determine which component is closest to the halfway point
List the 4 senses that we use for troubleshooting
touch, smell, hearing, sight
most electrical circuit problems fall into
open cct
short cct
grounds
high resistances
Describe: Manila rope
light yellow colour
smooth
waxy surface
Describe: Sisal rope
almost white
coarse texture that is rough to the touch
weaker than manila rope
not acceptable for construction rigging and hoisting
Describe: Nylon rope
pure white, soft, pliable, and smooth
will stretch up to 40%
loses about 10% of its strength when wet
does not rot
Describe: Polyester rope
not elastic and will only stretch 5%
87% as strong as nylon
doesn’t lose any strength when wet
Polypropylene rope
poly rope, floats on water
60% as strong as nylon
best insulating properties against shock
list rope in order of strength
Nylon 100% Polyester 87% Polypropylene 60% Manila Sisal
Lifting Workers formula
WLL = RBS/10
General Material Lifting formula
WLL = RBS/DF
What does a thimble do
Protects the eye of the rope
Care and storage of rope
Keep clean dirt acts as an abrasive
Do not overload never more than 1/5 of BS
Avoid expose to direct sunlight
Do not freeze
sharp bends and knots reduce strength by .5
bight of a rope
the part that forms the loop
long portion of the rope
standing part
Describe: Bowline
forms a non-slip loop at the end of a rope
Describe: Round turn with two half hitches
to make a secure fastening
Describe: Clove hitch
secure a rope to a fixed object, such as a post
Describe: Timber hitch
to secure a rope to a plank, timber, post, tube or pipe to lift that object in a vertical position
Describe: Single Dutchman (trucker’s knot)
tying down a load
forms a slip resistant loop that acts like a pulley in a block and tackle system
Describe: Sheet bend
use the sheet bend to attach two ropes of unequal diameter to each other
Describe: Bridle hitch
used on loads that have suitable attachments points
one sling could safely support half of the load
Describe: Single basket hitch
must not be used on loads that could tilt and slide out of the hitch
