Every safe lift starts with a plan. We engineer the rigging, calculate the loads, assess the site, and build a documented lift plan before a crane ever leaves the yard. Complex and critical lifts get the planning they demand.
Why Does a Lift Need a Plan Before the Crane Arrives?
A crane lift looks simple from the outside: hook the load, pick it up, move it, set it down. What actually determines whether that happens safely is decided before the crane ever leaves the yard. The load’s weight and balance point, the rigging configuration needed to lift it without slipping or shifting, the crane’s usable capacity at the specific radius and height required, and the site conditions the crane will be working in all have to be worked out in advance. A lift planned on paper, with the numbers checked against the load chart, behaves the way it is supposed to on the day. A lift improvised on site is where preventable accidents happen.
What Goes Into an Engineered Rigging Plan?
Rigging is the system of slings, shackles, spreader bars, and other hardware that connects the load to the crane’s hook. The right rigging configuration depends on the load’s shape, its weight distribution, and any points on the load that are, or are not, rated to bear its weight. An awkwardly balanced or unevenly weighted load rigged incorrectly can shift, tilt, or swing unpredictably once it leaves the ground. We assess the load’s actual construction, work from manufacturer lifting-point specifications where available, and choose rigging hardware rated well above what the job requires.
How Do You Calculate Whether a Crane Can Handle a Lift?
Every crane has a load chart showing its capacity at different combinations of radius and boom angle, and that capacity is always lower than the crane’s maximum rating once the load moves any distance from the base of the crane. Calculating a lift means confirming the load’s actual weight, the distance from the crane’s center to where the load needs to be set, and the height involved, then checking those figures against the specific crane’s chart. This step alone determines which of our cranes, from 26 tons up to our 150-ton unit with a 124-foot main boom, is the right equipment for the job.
What Does Site Assessment Cover?
The site has to support the crane safely, which means evaluating ground stability for the outriggers, clearance for the boom to swing without contacting structures or power lines, and any access restrictions that affect where the crane can be positioned. On tighter or more complex sites, this assessment happens well before the day of the lift so any issues, whether that is soft ground, a narrow approach, or overhead obstructions, are identified and planned around rather than discovered with the crane already on site.
What Is a Documented Lift Plan, and When Is One Required?
A documented lift plan puts the load weight, rigging configuration, crane position, load chart calculations, and lift sequence in writing before the job begins. For routine, low-risk lifts, this planning happens but may not need a formal written document. For complex, critical, or heavy lifts, and for any job where the consequences of an error are significant, a documented plan is standard practice. It gives everyone on site a clear reference for how the lift is supposed to proceed and provides a record of the safety considerations that were accounted for.
What Situations Call for the Most Careful Planning?
- Loads with an off-center or unknown center of gravity
- Lifts near power lines, structures, or other obstructions
- Heavy lifts operating near the crane’s maximum capacity at the required radius
- Sites with limited access, soft ground, or tight clearance
- Any lift where a documented, reviewable plan is required by the site owner or a regulatory requirement
