Size a mobile crane for a restoration lift and estimate the rental and crew cost from published public rate schedules. Describe the job in plain terms, like an RTU swap or a tree over the house, and the tool works out the pick weight, radius, and tip height for you. Or enter the engineering numbers directly.
"Describe the job" mode asks the questions an estimator can actually answer: what is being lifted, how far the crane sits from the building, how high the roof is. From those it works out the engineering inputs, and every derived number shows its formula and source. It currently covers:
AI Estimate Assistant, from Antero Trail, turns field notes, photos, and floor plans into carrier-ready Xactimate estimates. The calculator on this page is one piece of that engine, pulled out and made free. In the app, a crane scenario lands in your estimate as priced Xactimate line items (EQU CRANE, BTRUK, EQU DLVR) with the sizing narrative attached. No copy-paste.
The tool sizes the crane from the load chart, not the bare weight. A crane's rated capacity falls as the load moves away from the machine, so the pick radius and tip height matter as much as the weight. The standard practice is to keep the heaviest pick at or under 85 percent of the crane's rated capacity at that radius. That 15 percent margin absorbs rigging weight, wind, and the swing of the load, and it is the margin most rental yards and lift directors plan around.
Cost has two parts. The first is the crane and operator, priced by the day or half day from published equipment rate schedules. The second is the supporting crew and setup time, which grows when the site is harder to work: soft ground needs mats and cribbing, and power lines within 20 feet trigger the extra spotting and clearance procedures that a signal person is required to manage. The tool adds those site factors as separate line items so you can see what is driving the number, then rolls everything into a low to high range rather than a single false-precision figure.
Two price layers are shown and never blended: the market band (what operated crane services actually charge, from published rate sheets) headlines the result, and the ownership-and-operating cost floor from government schedules sits underneath as the justification anchor.
Swapping a rooftop HVAC unit? The crane is one line of a much longer scope. The HVAC replacement scope builder (commercial rooftop mode) builds the full package around it: the curb adapter, the roofing tie-in flashing, the electrical and gas work, and the controls, with the crane sized here and pre-filled from the roof height and unit weight.
These calculators produce planning estimates from published public rate schedules. They are not a formal quote. Confirm equipment, access, and pricing with a licensed operator or rental yard before you rely on any number for an estimate.