Widespread Employs: to offer a concrete mass, for base-mounted centrifugal pumps, that prevents differential motion amongst driving and driven customers, connected by a flex push; to reduce the large vibration amplitude (unbalanced forces) present in air compressors and vacuum pumps; to reduced the middle of gravity of tall, narrow units; https://titusgztmg.snack-blog.com/39634597/the-fact-about-seismic-restraint-inertia-base-that-no-one-is-suggesting