Advanced Rigging Final Examination Questions and Complete Solutions Graded A+.

  How often should a synthetic web sling be inspected? - Answer: Each day before use What will the tension be on one leg of a single vertical hitch lifting a load of 5 tons? - Answer: 5 tons Using the Rigging Hardware Tables in your book, what is the capacity of a 7/8 in. carbon shackle? - Answer: 13,000 lbs What is the most important piece of information to have before beginning to rig a load? - Answer: Weight of the load Which of the following topics is NOT important when selecting slings? - Answer: Capacity of the crane Using the Rigging Hardware Table in your book, what is the capacity of a 1/2 inch shouldered eyebolt when lifting at a 45 degree angle? - Answer: 550 lbs A non-shouldered eyebolt is primarily designed for lifting in what direction? - Answer: Vertical What is the term that describes a 'sudden' loading on a sling, when raising or lowering a load which will increase the stress on rigging of the load? - Answer: Shock loading Using the sling tables in your book, what is the capacity of a 7/8 inch 2-leg wire rope sling that is lifting at a horizontal angle of 60-degrees? - Answer: 26,000 What is the approximate weight of a cubic foot of concrete? - Answer: 150 lbs Which types of hitches are labeled on a synthetic sling? - Answer: Vertical Hitch, Choker Hitch, Basket Hitch What must be done if a sling is found to have a missing or illegible capacity tag? - Answer: Remove the sling from service What is the formula that is used to calculate the volume of a box? - Answer: Length x Width x Height 4 Reasons to remove a synthetic web sling? - Answer: UV damage, heat damage, ripped/torn, cant read tag One leg of a 4 leg alloy steel chain sling is longer than the other three; this is probably an indication of what type of damage? - Answer: The leg has been overloaded Who should rig a sling assembly to a load? - Answer: A trained and qualified rigger What types of hitch/s provide maximum contact (360 degrees) between the sling and load? - Answer: Two double wrapped basket hitches According to OSHA 1910.184, synthetic or polypropylene slings shall not be used at temperatures in excess of how many degrees? - Answer: 180-200 degrees According to OSHA 1910.184, what type of sling requires that the inspection be documented? - Answer: Alloy chain slings What is the term that describes the distance that it takes one strand to wrap 360 degrees around the wire rope core? - Answer: One rope lay A 4,000 lb. load is being hoisted with a two-leg bridle sling at a horizontal sling angle of 30 degrees. What is the tension on each leg? - Answer: 4,000 lbs What piece of rigging hardware should be used to prevent wearing in the eye of wire rope slings? - Answer: Thimble What action should be used to take if a damaged sling is found? - Answer: Remove from service What is the meaning of the red marker yarn in a web sling? - Answer: If you see a red yarn or thread the sling is badly damaged How should a rigger connect a sling to an eyebolt? - Answer: Use a shackle What should be placed between a sling and a load to protect the sling or load from damage? - Answer: A wooden block, a piece of old fire hose, a commercially made softner What hitch forms a slip noose around the objects that is to be lifted or moved? - Answer: Choker What should you do if the safety latch on a hook swings freely through the throat opening and past the hook point? - Answer: Replace the hook The __________ is used for a direct lift with a lift angle of 90-degrees? - Answer: Single vertical hitch The __________ sling produces a 360 degrees contact with the load and tightens as the lift takes place. - Answer: Double wrap choker hitch Which of the following is a characteristic of synthetic web slings? - Answer: They are affected by heat and chemicals When is a tag line required? - Answer: When the rotation of the load is hazardous Three inspection checks when inspecting a load hook? - Answer: Safety clip, correct markings, What is the purpose of a spreader bar? - Answer: To handle odd shaped loads, to handle long loads, to keep slings away from the load What is the maximum capacity of a screw pin shackle? - Answer: Maximum rated working load limit of a shackle What is the minimum acceptable (lowest) horizontal sling angle for use with slings? - Answer: 30 degrees When using a shackle as a part of a choker hitch where should the pin of the shackle be placed? - Answer: In the eye of the sling What is the OSHA regulation for the inspection of slings used in the general industry? - Answer: 1910.184 What is the order of hitches from weakest to strongest? - Answer: Choker, Vertical, Basket How much of the slings capacity is lost when you go from a vertical to a choker hitch? - Answer: 25% When used in a tapped hole, how much thread engagement is required when installing an eye bolt? - Answer: 1 1/2 times the diameter of the bolt What may occur when a sling is pulled out from a load resting on it? - Answer: The load may roll, The load may be damaged, the sling may be damaged When should a knot be used in a sling to shorten the sling leg? - Answer: Never The lower a sling angle becomes, what happens to a sling tension? - Answer: The sling tension will increase All of the following must be marked on a shackle except: - Answer: County of origin What is the lowest horizontal angle allowed with a non-shouldered eyebolt? - Answer: 90 degrees Where must the direction of pull be, when using beam clamps? - Answer: In line with the web of beam When is secondary restraint required when using rollers or trollies? - Answer: Never Which way should the handle of an unloaded lever binder face? - Answer: Up How do you release a lever binder? - Answer: Using a pry bar How do you seat the wedge in a wedge socket? - Answer: Under a load What goes in the hole of a sister hook? - Answer: The pin of a shackle What do you look for when inspecting a mechanical jack? - Answer: Wear to the ratchet teeth When does a basket hitch have its full capacity? - Answer: Wear to the ratchet teeth What must you do to work under a suspended load? - Answer: Have the load support with blocking What is the direction of pull when using shouldered eye bolts? - Answer: Within the plane of the eye bolt What information must be on the tag of an 80 lbs spreader beam? - Answer: Manufacturer name and address What markings are on a swivel hoist ring? - Answer: Manufacturer, capacity, and torque Which of the following defects discovered during an inspection would require the removal of a wire rope sling from service? - Answer: 10 broken wires in one rope lay According to OSHA 1910.184; what information is not required to be on the identification tag of a chain sling? - Answer: Serial Number The A.S.M.E. standard that covers slings is: - Answer: B30.9 What is the ASME standard limit for excessive throat opening of a hook? - Answer: 5% 1/4 in. What is the ASME limit for the bending or twisting damage of a hook? - Answer: 0 Degrees Alloy steel chain slings shall be removed from service if the slings have been exposed to temperatures in excess of.... - Answer: 1,000 degrees The design factor for wire rope slings shall be at least: - Answer: 5:1 The standards governing lifting beams (spreader beams) can be found in - Answer: A.S.M.E. B30.20 Hardware shall be removed from service when ____ of wear is found. - Answer: 10% While inspecting a round sling, you feel a small knot on the inside of the cover, what action should be done? - Answer: Use the sling because a small knot inside the cover is typical to find What is the Working Load Limit design factor for chain? - Answer: 4:1 Spreader beams must bear a name plate displaying the: - Answer: Manufacturer's name, Rated Capacity, Serial Number The correct measurement of wire rope diameter is __________. - Answer: The largest diameter of a cross section of wire rope Permanent distortion of the wires and strands resulting from sharp bends is a: - Answer: Kink Which of the following grade of chain sling is authorized for over-head lifting applications? - Answer: Grade 8 What type of shackle IS recommended for long-term installation? - Answer: Bolt type When making a sling using wire rope clips, the "Rule" is ________ - Answer: Slings cannot be fabricated using wire rope clips Shackles with crown or pins worn by more than _____ should be destroyed. - Answer: 10% An older 2 inch shackle is being used as a master link. This shackle has no markings on it due to its age and you know what the capacity is of the shackle due to its size. May this shackle be used in this application? - Answer: No When using a chain fall as rigging, how often must a documented inspection be done? - Answer: Annually The distance between the bearings surfaces on a chain sling... - Answer: Reach Rotation Resistant rope slings are recommended for what type of lifting operations? - Answer: Rotation Resistant ropes may not be used as a slings What is the maximum interval for inspections on all slings, rigging hardware and below the hook lifting devices? - Answer: Yearly What is the difference in documentation requirements between chain sling and wire rope slings? - Answer: Chain slings require that the condition of the individual sling be recorded, wire rope slings do not require that the condition of the sling be recorded The tension on a turnbuckle must be? - Answer: in line Per ASME the hook throat opening must not be greater than? - Answer: 5%