Intermediate Rigging (RI) study guide
Intermediate Rigging (RI) · Work through your exam, one topic at a time.
The Intermediate Rigging (RI) credential is positioned as a mid-level qualification for construction craft professionals who already understand basic rigging and want to take on more complex lifts. It typically suits riggers, millwrights, ironworkers, crane crew members, and apprentices preparing to work under less direct supervision. Candidates should already be comfortable with hand signals, hardware identification, and basic sling configurations before attempting intermediate-level material. The exam is organized around five equally weighted domains: rigging safety and load calculations; sling selection, inspection, and use; rigging hardware and attachments; crane load charts and lift planning; and lift execution, communication, and signaling. The Intermediate Rigging (RI) study guide has 5 sections and about 1,379 words.
01Rigging Safety and Load Calculations
Every lift starts with two numbers: the load's weight and the rigging's capacity. Candidates must be fluent in the relationship between working load limit (WLL), the angle between sling legs, and the tension each leg actually carries.
322 words, about 2 min02Sling Selection, Inspection, and Use
A candidate must match sling type to load and environment: wire rope for abrasion and heat, chain for sharp edges and harsh conditions, synthetic web for soft or finished loads, and synthetic round slings for flexibility. Know the identification tags and the removal criteria for each type.
276 words, about 1 min03Rigging Hardware and Attachments
Hardware includes shackles, hooks, eye bolts, turnbuckles, links, and swivels. Each has a rated capacity and a correct orientation.
263 words, about 1 min04Crane Load Charts and Lift Planning
Load charts define capacity by boom length, radius, and boom angle, and they are specific to configuration-outriggers versus on tires, counterweight, jib stowed or deployed. Candidates must read the chart correctly: find the radius, then the boom length, then apply deductions for the load block, rigging, and any stowed attachments.
263 words, about 1 min05Lift Execution, Communication, and Signaling
Execution covers pre-lift checks, tag lines, controlled load movement, and clear communication. One designated signal person directs the operator; everyone else relays through that person.
255 words, about 1 min