CT Crane Operator case studies

CT Crane Operator · Put your knowledge to work in context.

The Connecticut crane operator credential is a state-level licensing requirement for people who operate hoisting equipment in Connecticut. It is aimed at operators running lattice-boom, telescoping-boom, tower, and other hoisting machines on construction, utility, and industrial sites, and at the employers and signal persons who work alongside them. The CT Crane Operator case studies are 5 cases and about 2,172 words.

Load Chart and Outrigger Setup at a Trench Edge

A 60-ton truck crane is set up beside a new building. The load chart for the current configuration - 62 ft boom, outriggers fully extended, 360-degree operation - shows 12,400 lb capacity at a 34 ft radius.

490 words, about 2 min 2

Off-Center Tank Lift with Asymmetric Sling Tensions

An 8,000 lb rectangular tank is to be lifted by a four-leg bridle using two lugs, one 2 ft from each end of the 12 ft tank. The tank's center of gravity is 4 ft from the left end, not at mid-length, because a pump is mounted on that end.

454 words, about 2 min 3

Energized 13.8 kV Line and Covered Conductor Claim

A 40-ton rough-terrain crane is working in a utility yard beside an energized 13.8 kV overhead line. The line is owned by the utility and has been fitted with orange insulating line hose over part of the span; the utility says it is covered but will not de-energize during the day.

426 words, about 2 min 4

Boom Hoist Rope Damage and Field Splice Proposal

During a pre-shift inspection of a 30-ton crawler crane, the operator finds the boom hoist wire rope has a tight kink about 18 ft behind the drum, a birdcage deformation 4 ft from the kink, and two broken wires in one outer strand within one lay. The rope is 3/4 in, 6×19 IWRC, and the sheave grooves show visible wear with a sharp edge.

357 words, about 2 min 5

Two-Crane Tandem Lift with Uncontrolled Load Share

An 18,000 lb horizontal vessel must be set on foundations using two cranes because one side is blocked by a pipe bridge. Crane A, a 50-ton truck crane, is rigged 12 ft from the vessel's center of gravity on the left side; Crane B, a 30-ton rough-terrain crane, is rigged 18 ft from the CG on the right side.

445 words, about 2 min