Mobile tower crane lift plan example: a precast stair flight at 24 m in 3D
A 4K film from an RMT Solutions mobile tower crane lift plan (example job). A Spierings SK597-AT4 self-erecting mobile tower crane, rigged with its 48 m jib on its 6.925 x 7.00 m outrigger base, lifts a 1,800 kg precast concrete stair flight off the delivery trailer at 24 m radius on a 2-leg chain, slews it 50 degrees and lowers it to the set-down, at 56.0% utilisation of Spierings’ load chart. The slinger / signaller signals from her position clear of the load’s path, then unhooks both legs once the slack is off.
The video is rendered from the same 3D model as the plan's drawings, so the machine, the radius and the load match the figures on the sheets.
The lift in figures
- Crane
- Spierings SK597-AT4 mobile tower crane, 48 m jib, 26 m under-jib height
- Set-up
- 6.925 x 7.00 m outrigger base on mats
- Load
- 1,800 kg precast concrete stair flight
- Gross load
- 1,817 kg including the 2-leg 10 mm grade 10 chain and shackles
- Duty
- 3,245 kg on Spierings’ load chart at the 24 m published point
- Utilisation
- 56.0%
Utilisation is the gross load, including all the lifting accessories, divided by the capacity on the manufacturer's chart for that configuration and radius.
Every RMT lift plan comes with drawings like these
An elevation, an exclusion zone plan, a rigging drawing and 3D views, drawn to the machine's real dimensions and written by a CPCS A61 Appointed Person with 35 years in lifting operations.
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Example job for illustration. It is not a site instruction or an approved plan for another lift: every lift needs a plan for the actual machine, load and site.