CSCS Mobile Crane case studies
CSCS Mobile Crane · Put your knowledge to work in context.
The CSCS Mobile Crane credential is aimed at workers who direct or support mobile crane lifts: signalpersons, riggers working under a lift plan, and operators who want their signaling and crane-safety knowledge validated. The exam is multiple choice and tests the practical judgment behind a safe pick rather than trivia. The CSCS Mobile Crane case studies are 5 cases and about 1,511 words.
1Picking the Chart Before the Pick
A 90-ton hydraulic truck crane is set on a stabilized construction entrance with outriggers fully extended on 4 ft square pads over compacted fill. The planner needs to lift a 14,000 lb chiller from a flatbed at a 34 ft radius and swing it 180 degrees to a roof curb at a 62 ft radius.
364 words, about 2 min2The Boom That Won't Stow
After a week of work, a crew is disassembling a lattice-boom crawler crane. The boom sections were pinned in 90°F heat; the crew is now working at 40°F in the evening.
312 words, about 2 min3Two-Block Warning at the Roof Edge
An operator is landing bundles of roofing material on a 4-story roof. The anti-two-block alarm sounds as the headache ball approaches the boom tip during a blind landing over the parapet.
280 words, about 1 min4Outrigger on a Fresh Patch
A 50-ton rough-terrain crane is set up beside a newly poured concrete apron to lift a 9,000 lb pump skid at a 28 ft radius. The outrigger float on the curb side lands partly on the new concrete (cured 3 days) and partly on gravel.
278 words, about 1 min5The Load That Shifted in the Sling
A crew is lifting a 6,000 lb irregular steel fabrication with a two-leg choker bridle. During the trial lift the load tilts about 15° and the center of gravity shifts toward one leg.
277 words, about 1 min