UA Apprenticeship Rigging Final Exam With 100% Correct Questions and Answers

UA Apprenticeship Rigging Final Exam With 100% Correct Questions and Answers what are the four requirements of rope fastening? - strong knot, will not slip, tied and untied easily what is the % of swl allowed for a straight/vertical hitch attached to a hook on a load? - 100 what % of swl for a choker hitch? - 75% what % of swl for a basket hitch? -200% how do you find the swl for a single vertical wire rope sling? - square the diameter and multiply by eight how do you find the swl for a 2 leg bridle sling? - wire rope swl x (height/length) x 2 how do you find the swl for a 3 and 4 leg bridle sling? - same formula as two leg but with 3 instead of 2 multiplying the product what is regular and lang lay? - in a lang lay, the wires or yarns are wound the same way as the strands are around the core. in a regular lay, the wires or yarns are wound in the opposite direction as the strands around the core. how do you find the swl for a piece of rope based on the breaking strength? - divide the breaking strength by the safety factor. True or false: regular right laid rope should be uncoiled counterclockwise - true True or false: all natural fiber rope is biodegradable - true What is a lay? (as a noun) - the distance it takes to make one complete wrap or revolution with a strand First grade or #1 manila can be identified by? - the inner wound colored strip what is the strongest synthetic fiber rope mentioned in chapter 1? - nylon rope size is designated by which dimension? - diameter what is the first step in any rigging operation? -determine the weight of the load what is the swl multiplier for manila rope? -20 what is the swl multiplier for polypropelyne? - 40 what is the swl multiplier for nylon or polyester? - 60 What is the swl multiplier for polyethylene? - 35 how do you find the swl of a particular rope using the rule of thumb? - take the diameter and convert it to eighths, then take the numerator and square it. multiply the product by the specific multiplier for the type of rope (i.e 35 for polyethylene) a splice, even on a new rope, reduces the load carrying ability by what percentage? - 15% Nylon is how many times stronger than manila? -2 1/2 What type of rope will stretch the furthest under a sustained load? - #1 manila do sharp bends from a knot weaken rope fibers? - yes if a rope breaks, you can tie the ends together with a square knot if it's a dry rope (t/f) - false, you must splice them into one piece after removing the bad section are a square knot and reef knot the same? - yes which part of a rope is used to tie a knot? - the running end this knot is used for attaching a rope to some object - double half hitch this knot is best used as a stopper - figure eight knot this knot is primarily used to finish off other knots and should not be used for lifting - single half hitch this knot ties together two dry ropes of the same size - square knot this is one of the most misused knots in rigging - clove hitch this is the most secure knot for hoisting pipe or tubing - pipe hitch this hitch should only be used for a right angle pull - clove hitch this knot is used for forming a loop that will not slip under strain - bowline as a sling angle decreases from 90 degrees, the available sling load will increase or decrease? - increase