sentence1: Component modularization and prefabrication off-site can reduce the amount of time cranes are needed on a site, as well as provide opportunities to reduce project schedules and construction costs and to concentrate jobs locally at the prefabrication facility and true is true and true is true and true is true and true is true and true is true .
sentence2: Cranes are needed on-site for a shorter time when prefabrication and modularization are done beforehand.