Basic Rigging (RB) study plan

Identify the scope and key requirements of OSHA 1926 Subpart CC and ASME B30.9 as they apply to basic rigging operations.

List the five primary causes of rigging accidents and match each to a specific preventive action.

Define the terms qualified rigger, competent person, and designated person per OSHA definitions.

Select the correct sling type (chain, wire rope, synthetic web) for three given load and environment scenarios.

Compute the working load limit (WLL) for a given chain sling using the manufacturer's tag and applicable reduction factors.

Determine the WLL of a wire rope sling using the formula WLL = diameter squared times 8 (in tons) for a single-leg vertical hitch.

Identify the three types of synthetic web sling damage that require immediate removal from service.

Explain the difference between proof load and working load limit and state the proof load test multiplier for each sling type.

Demonstrate how to inspect and tag out a damaged shackle, hook, and master link according to ASME B30.26 and B30.10.

Describe the effect of sling angle on tension for a two-leg bridle hitch and calculate the tension in each leg for angles of 30, 45, and 60 degrees.

Tie and identify five basic rigging knots: bowline, clove hitch, half hitch, timber hitch, and sheet bend.

Explain when to use a choker hitch versus a vertical hitch and state the capacity reduction for a choker hitch.

Estimate the weight of common materials (steel, concrete, wood, aluminum) using volume and density formulas.

Calculate the center of gravity for a symmetrical and an asymmetrical load using the principle of moments.

Determine the tension in each sling leg for a four-leg lift with an off-center center of gravity.

Use a load weight estimation worksheet to verify the weight of a given load against the crane's capacity chart.

Design a rigging plan for a load with an offset center of gravity, including sling selection, hitch type, and tension calculations.

Calculate the effective capacity of a multi-leg sling assembly when the legs are not symmetrically loaded.

Explain the effect of sling angle on the load's center of gravity and stability during a lift.

Identify three methods to control load rotation and sway during a lift using tag lines and hitch placement.

Demonstrate the standard hand signals for hoist, lower, stop, emergency stop, and dog everything.

Describe the proper sequence for a pre-lift safety meeting and load check.

Explain the roles of the signal person, rigger, and crane operator during a lift and the communication protocol.

Identify three environmental factors (wind, ground conditions, power lines) that affect lifting operations and state the required action for each.

Review OSHA 1926 Subpart CC requirements for rigging equipment inspection, including frequency and documentation.

Explain the requirements for a lift plan and when a critical lift plan is necessary.

Identify the steps to safely move a load using a come-along and chain fall, including anchoring and load control.

Describe the procedure for refusing an unsafe lift and the documentation required.

Complete a full-length practice exam under timed conditions, targeting a score of 80% or higher.

Review all incorrect answers and create flashcards for weak areas.

Re-calculate WLL and center of gravity problems from weeks 2 and 4 to reinforce retention.

Summarize the top 10 rigging safety rules in your own words.