machineweights

Scissor Lift Floor Load Calculator (psf)

Enter the machine and the floor’s rated live load in pounds per square foot. The check uses the larger of the average pressure over the footprint and the manufacturer’s published occupied floor pressure.

Floor load check

Total weight–
Average pressure–over the footprint
Published floor pressure–from the spec sheet, when listed
Heaviest wheel–published max wheel load

Average pressure spreads the total weight over the footprint. Real loads concentrate under the wheels, so slabs can fail locally even when the average looks fine. Ask a structural engineer before working on suspended slabs, mezzanines or older floors.

How it works

Average pressure (psf) = (machine weight + platform load) ÷ footprint area in square feet.

Manufacturers such as Genie publish an occupied floor pressure and a maximum wheel load for each lift at full capacity; these are often higher than the simple average.

Concentrated wheel loads matter most on suspended slabs, mezzanines and older floors. Get an engineer’s sign-off when the margin is small.

Common questions

What floor load do scissor lifts need?

Small slab scissors publish occupied floor pressures around 250–300 psf, more than many office floors are rated for (often 50–100 psf live load). Check before driving onto upper floors.

What is psf?

Pounds per square foot. 100 psf is about 4.8 kPa.