Even on a job with two tower cranes at work, pumping proved to be the most efficient concrete placing method for a basketball arena being built in Minneapolis. Concrete work for the 10-level structure was originally scheduled to be done with a tower crane and 3-yard bucket, with a smaller hydraulic crane helping out. But the general contractor called in the pumps when lower-level arena walls were placed, then opted to pump the decks and supporting beams too.
A compressed construction schedule and the broad expanse of the arena's deck levels led to the decision to pump. The swing radius of a single tower crane wasn't long enough to reach all areas of the typical pours. Using the pumps freed tower cranes for form stripping and other lifting jobs.