Typical Employs: to supply a concrete mass, for base-mounted centrifugal pumps, that prevents differential motion between driving and pushed members, related by a flex drive; to lessen the massive vibration amplitude (unbalanced forces) found in air compressors and vacuum pumps; to decreased the center of gravity of tall, slender units; https://tituseyqjb.suomiblog.com/the-fact-about-seismic-restraint-inertia-base-that-no-one-is-suggesting-55167013