Rigging Final Exam (Already Passed)

According to OSHA, what conditions require synthetic fiber rope to be removed from service? correct answers It must be removed from service if there are signs of abnormal wear, powdered fibers between the strands, broken or cut fibers, variation in size or roundness of strands. One major manufacturer lists their 1/2" three strand rope as having a catalog breaking strength of 5600 lbs. Using the industry standard design factor, determine the working load limit. correct answers 5600/5 = 1120lbs working load limit Which knot is often called the king of knots? correct answers The Bowline. It is easily untied after supporting a heavy load. What are OSHA's requirements for inspecting wire rope? correct answers They There are two variations of the square knot that should be avoided for rigging purposes. What are they? correct answers The thief knot, because the tension is crossways it does not perform as well as the square knot. The grief or "whatknot" is a trick knot and often falls apart when tension is applied. What is the efficiency rating of a bowline on a bight? correct answers It is 65% efficient. What is the efficiency rating of a running bowline? correct answers It is 50% efficient. What is the efficiency rating of a clove hitch? correct answers It is 60% efficient Explain what it helps to begin a splice with a tracer strand. correct answers Start by tucking the tracer strand back into itself, this gives you a good reference point to start the splice. How far must the tails project beyond the last full tuck in 3/4" rope? correct answers The tails must project at least six rope diameters for all rope 1" and under.