A 59,000-pound turbine needed to be installed in a lumber mill in Maine. The turbine was located on the second floor, accessible only through a floor hatch that was 16 ½' long and 11'8" wide. The turbine’s dimensions were 13' long and 10' wide.
The hatch opening was 27 feet above the first floor. The turbine was transported into the building by the customer’s OTR trailer. Barnhart set up gantries on the second floor with 16" deep slide header beams.
Rigging was attached to the turbine lifting points and hoisted using chain falls.
The turbine was lifted over the generator and lowered to its final set location using gantries and 15-ton air chain hoists. Barnhart’s approach, which avoided using a large crane to go through the roof, was reasonable from a cost perspective and less disruptive to the plant’s operations.