All rooftop air-handling units need to be supported by vibration isolation curbs. AMP Promatic manufactures standard and custom vibration isolation curbs designed to resiliently support the equipment at the specified elevation, creating a fully enclosed air and weather tight system.

 

Our isolation curbs consist of an upper structural steel support rail with supply and return flexible connector supports on which the equipment and duct openings rest and a lower support curb which is attached to the roof structure, separated by freestanding, unhoused, laterally stable steel springs and lateral seismic and/or wind load restraints.

 

The upper support rail provide continuous structural steel support for the rooftop equipment and are designed to provide isolation against casing-radiated vibration in the rooftop equipment housing and structure borne vibration from rotating and mechanical equipment in the rooftop package.

The lower support curb shall be a formed channel fabricated of heavy gauge galvanized steel with a continuous nominal wood nailer.

 

The isolation curb assemblies can be shipped to the job site fully assembled with the upper support rail, lower support curb, springs, stabilizers and duct supports completely assembled. Units exceeding freight limitations will be split and assembled in the field by others.

 

Vibration isolators shall be selected by the manufacturer for each specific application to comply with deflection requirements as shown on the Vibration Isolation Schedule or as indicated on the project documents.