Usually mass concrete is used for machine foundations. The excessive vibrations can be eliminated by use of heavy foundations. As a rough guide, the ratio of the weight of foundation to the engine weight may be kept beteween 2.5 to 3.5 in most of the machines.
Manufactures recommend the weight of foundation suitable for their machines, based largely on experience. The permissible bearing pressure under dynamic loads may be taken as 1/2 to 1/4 of the premissible bearing pressure under static loads.