Vibration Isolation Roof Curb Detail

Roof curb isolation systems are designed with springs that have static deflections to meet the design criteria.

Vibration isolation roof curb detail.

The vic eq is a seismic vibration isolation curb that incorporates oshpd pre approved vibrex type rmu eq sh vibration isolators for rooftop package units. Galvanized steel construction with a wood nailing strip for attaching field supplied and applied flashing is standard. It features removable port covers for convenient spring inspection and adjustment. Isolated curbs vibro acoustics vibration isolation curbs vcr series come with integral and adjustable spring vibration isolators.

Curb includes vibration isolation between equip ment and roof. Seismic control spec scs. Kinetics in curb acoustical treatments control breakout noise from equipment fans and compressors into the space below. Vcr curbs can be constructed with a sloped bottom to match the roof pitch.

All corners and seams are mitered and fully welded with internal 12ga a i. Vibration isolation curb systems are manufactured of 12 18ga astm a653 653m prime g90 galvanized steel construction. It ships fully assembled in one piece ready for installation on the jobsite. Structural cross and vertical supports when necessary.

The seal shall extend down past the wood nailer of the lower support assembly and flash over the roof material at the wood nailer on the lower support curb. Vibration isolation curb shall be designed to provide a minimum of 90 isolation efficiency with 1 deflection. All curb systems are water tight and plenum applications are air tight utilizing internal flex duct. Seismic curbs see figure 12 seismic curbs are available on a special quoted basis.

Flat or sloped curb heights vary in increments of 4 00 from 14 00 to 34 00. The vibration isolation curb shall be air and weather tight using an elastomeric seal which is attached to the upper support frame with a galvanized steel clip. Galvanized steel construction with a wood nailing strip for attaching field supplied and applied flashing is standard. Vibration isolated curbs see figure 12 vibration isolated curbs is available on a special quoted basis.

The vibration isolation curb shall be air and weather tight using an elastomeric seal which is attached to the upper support frame with a galvanized steel clip. Isolation curbs incorporate the roof curb and rooftop rail into their design. Seismic engineering svcs. Application drawings svcsa.

9 continuous rubber cover around perimeter of vibration isolation curb over spring isolators. Vcr curbs can be constructed with a sloped bottom to match the roof pitch.