High Risk Work Licence - Slewing Mobile Crane C2 (20t) case studies
High Risk Work Licence - Slewing Mobile Crane C2 (20t) · Put your knowledge to work in context.
The C2 Slewing Mobile Crane licence is an Australian high risk work licence class covering slewing mobile cranes with a maximum rated capacity of up to 20 tonnes. It suits operators who load, slew, travel and place loads with these machines on construction, industrial, utility and infrastructure sites. The High Risk Work Licence - Slewing Mobile Crane C2 (20t) case studies are 5 cases and about 3,042 words.
1The 19 t Pick That Grew a Tail
You are operating a 20 t capacity slewing mobile crane on a level concrete hardstand at a precast yard. The load chart for your current configuration (main boom, no jib, outriggers fully extended, 360° slew) allows 4.2 t at a 14 m radius.
632 words, about 3 min2Outrigger on Fill
You are setting up a 20 t slewing mobile crane to lift air-conditioning plant onto a roof. The site is a former car park: 150 mm of compacted crushed rock over what the site plan calls 'controlled fill', with a stormwater line shown running diagonally beneath the hardstand.
618 words, about 3 min3Two-Way Radio With a Blind Side
You are slewing a 1.5 t steel beam onto the third-floor steelwork of a building under construction. The dogman is on the floor below the landing point and cannot see the beam's far end; a second rigger is at the far end but has no radio and is using hand signals.
580 words, about 3 min4The Load That Wasn't on the Chart
You are asked to lift a prefabricated skid-mounted pump unit from a truck tray onto a plinth. The unit's nameplate says 3.2 t.
601 words, about 3 min5Boom Up, Wind Rising
You are lifting a 1.2 t, 6 m × 3 m signage panel onto a building facade. The crane is set up on the street side, outriggers fully extended, boom at 45°, radius 12 m; the chart allows 3.5 t there.
611 words, about 3 min