CSCS Crawler Crane case studies

CSCS Crawler Crane · Put your knowledge to work in context.

The CSCS Crawler Crane certification is a UK construction-industry competence credential for operators of crawler-mounted lattice-boom cranes. It is aimed at plant operators who already have practical machine time and now need to demonstrate the knowledge and competence expected on site, typically as part of the route to a CSCS-linked operator card. The CSCS Crawler Crane case studies are 5 cases and about 2,391 words.

Pick-and-Carry Over a Backfilled Utility Trench

You are running a 90-ton crawler crane on outriggers-free crawler tracks, lifting a 14,000 lb prefabricated skid from a flatbed to a foundation pad 40 ft away. The swing path crosses a 6 ft wide, 8 ft deep utility trench backfilled three weeks ago with native spoil.

473 words, about 2 min 2

Chart Capacity vs. Actual Radius After Boom Deflection

You are operating a lattice-boom crawler crane with 110 ft of main boom and a 20 ft jib offset at 10 degrees. The lift plan calls for a 9,500 lb air-handling unit at a 70 ft radius, measured on the ground from the boom pivot to the load line.

465 words, about 2 min 3

Two-Leg Bridle Sling With Unequal Leg Angles

You need to lift a 12,000 lb steel tank using a two-leg bridle of 1-inch 6x19 IWRC wire rope slings with mechanical splices, choked at the tank's two lifting lugs. The lugs are 8 ft apart and the hook is 5 ft above the line between them, so each leg runs at an angle from vertical.

473 words, about 2 min 4

Pre-Shift Inspection Findings on a Crawler Crane

At the start of a shift you walk the 150-ton crawler crane. You find: (1) the boom hoist wire rope has three broken wires in one lay over a 6-inch section near a sheave, plus some flattening; (2) the swing brake holds but the swing horn and travel alarm are intermittent; (3) the load moment indicator powers up but the boom angle readout disagrees with a hand-held inclinometer by 3 degrees; (4) the left track shows uneven pad wear and one pad is missing a bolt; (5) the fire extinguisher gauge is in the green but the inspection tag is 14 months old.

502 words, about 3 min 5

Blind Pick With Hand Signals and a Restricted Swing

You are setting a 6,000 lb pipe spool onto a pipe rack inside a congested process area. The operator cannot see the landing zone; a rigger with a radio is positioned there, but a second worker is also giving hand signals from a different location.

478 words, about 2 min