Roof Elevation 490-ft above grade, equipment consisted of 35,000-lbs of electrical gear designed to improve power distribution to the top third of this commercial building in New York City. Building layout and the equipment platform location prevented the use of a crane making the only viable the access to the rooftop a relatively narrow air shaft running from the basement to the top floor. The exit of the shaft was approx. 40-ft from the elevated equipment platform and the building's engineer of record required that no loading be imposed onto the aging structure's roof. All loads were to be transferred directly to the structural elements of the building.
Solution: Galasso installed a lightweight gantry constructed of scaffolding pipe. The use of a base mounted electric winch placed at the rear of the equipment platform and incorporating a few snatch blocks to direct and re-direct to the load line from there to the center of the shaft allowed a trolley beam to be added to the system, thus providing the ability to translate the equipment the 40-ft to the platform and easily lower to the steel dunnage.