Aug 11, 2021 · 4/11/2011 · With 6 meters of vertical lift and a ground speed of 1.5 meters per second, the crane travels to the rack feeder 40 meters away, rotates 90 degrees, and unloads the coils. The building of the existing high-bay warehouse will be extended by raising the roof and erecting a 25-metre high, 60-metre long steel structure with eight levels for Perfectmmodating up to 4,000 tons of coils.