Here Inertia base for pump details including different view including top view , side view , front view provide for attachment of vibration isolation , prevent differential movement between driving and driven members, reduce rocking by lowering equipment center of gravity, also in drawing shown large pumps over 75 HP the mass of the inertia base becomes critical for mitigating vibration. inertia Base's height is minimum of 1/10 of the longest span between spring isolator , but not less than 6” for more details of Inertia base for pump details including different view download this file.