RPM is the acronym used for revolutions per minute. It measures the number of revolutions completed in one minute around a fixed axis, giving the speed of a mechanical component. It is commonly used to describe the performance of automobile engines.
Like most ballparks built from the 1990s onward, Safeco Field is a 'retro-modern' style ballpark that incorporates many of the features of ballparks built in the 1950s and earlier with modern amenities.
The Dallas Trade Mart, the second Dallas Market Center building, was designed by Harold Berry and Donald Speck, with Harwell Hamilton Harris and opened its doors in 1958. The project provided 980,000 square feet (91,000 mÂ²) at a cost of $12,640,000.