Problems arise however, either because the proper sources are not consulted or the information on the drawings is incomplete. This publication, in combination with manufacturers’ literature (Mason Industries, in particular, publishes a wealth of information) should allow the engineer to specify the correct isolation for most types of equipment. The 2015 ASHRAE Handbook on HVAC Applications (Chapter 48 on Noise and Vibration Control) is an excellent source of design information for vibration isolation. Improper Design, Selection & Specification There are three areas where problems frequently occur:ġ) Improper design, selection & specification Most problems with vibration isolation can be easily avoided. If the products have been specified and installed correctly, they should be providing a significant reduction in the force transmitted to the structure, relative to the force that would be transmitted if the equipment was “bolted down.” In our experience, there is a good chance that the isolation is not working properly. ![]() In most commercial and industrial buildings, you will find some type of vibration isolation on the mechanical equipment. ![]() Bad Isolation - Some Common Problems Seen in the Field
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