Generic Vibration Criteria 

Introduction

The vibration criterion (VC) curves, widely used and accepted throughout the world as a basis for evaluating facilities for vibration-sensitive instruments and tools and designing structures that will support vibration-sensitive equipment and process, were developed by Colin Gordon and his associates. Equipment operational problems that caused by vibration, can be prevented if environmental vibration complies with the vibration criterion curves appropriate to the equipment specific vibration criteria. 

Vibration Criterion Curves (VC Curves)

The vibration criterion criteria takes the form of a set of one-third octave band velocity spectra labeled vibration criterion curves VC-A through VC-G, illustrated in Figure 1 and numerically defined in Table 1. The vibration is expressed in terms of its root-mean-square (rms) velocity. 

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