Important considerations for seismic vibration isolation

The seismic mounts and isolators are recommended for use with the mechanical equipment when it is subject to seismic occurrences, high wind loads and other external forces. The seismic isolators are pretty effective for noise and vibration sensitive areas when the mechanical equipment is located above or near it. The seismic spring isolators are very effective when the equipment for isolation experiences significant weight changes due to the fluid drainage during routine maintenance operations. The equipment that falls under this category is cooling towers, chillers and boilers etc.

The seismic vibration isolators consist of a welded steel housing that has a free standing, large diameter steel spring in the middle. The metallic housing has zinc metallization on it in order to protect it from corrosion.

Important considerations for seismic vibration isolation

Important considerations for seismic vibration isolation

The housings have elastomer members assembled which work in tandem with the spring member to provide the required damping effect. The housings are fabricated in such a manner so as to limit vertical movement of the isolated equipment. The vertical movement is generated if there is a reduction in load due to fluid drainage or increase in load due to large external forces like seismic events or high winds.

The top plate in the seismic spring isolator housing has threaded holes for anchoring the mechanical equipment. In certain situations, it becomes difficult to align the holes and welding is recommended. The snubbing element has the neoprene elastomer at its core. For heavy duty applications, the seismic vibration isolators have elements which can accommodate directional snubbing also.

Andre HVAC International Inc. provides the entire range of seismic spring isolators and seismic spring mounts for the mechanical equipment. They also help in carrying out computer studies for snubbing systems in earthquake and bomb blast zones. The HVAC vibration isolation solutions from Andre HVAC are guidelines that provide general seismic details for suspended piping, ductwork and electrical systems. There are special seismic mounts and independent seismic restraints for the HVAC applications. With the help of these mounts, you can secure the air-conditioning equipment, fans, ducts etc. to the building. The cable restraints also come quite handy for restraining the suspended pipe and equipment. The seismic spring mounts thus provide adequate protection from the seismic activity.

Thereis a variety of mounts available which primarily consist of a spring and an elastomer- neoprene. There are also wire rope and pad type vibration mounts and isolators. The seismic mounts comply with IBC regulations. The Amber booth vibration isolators have been used in HVAC, defense, transportation and OEM market for over 60 years. Amber booth is a member of the American society of heating, refrigerating, and Air-conditioning engineers, Inc. and Vibration isolation and seismic control manufacturers association. Andre HVAC International Inc. brings to you the entire range of Amber booth products to meet your specific requirements.

The seismic spring mounts are color coded to indicate the spring deflection and the load capacity. To meet the seismic code compliance, a spacer block is provided for the air gap setting. The Andre HVAC seismic spring isolators are designed to counter the seismic forces up to a value of 2G.

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