Vibration Isolation Roof Curb Detail

Vcr curbs can be constructed with a sloped bottom to match the roof pitch.

Vibration isolation roof curb detail. Isolation curbs incorporate the roof curb and rooftop rail into their design. Flat or sloped curb heights vary in increments of 4 00 from 14 00 to 34 00. Vibration isolation curb shall be designed to provide a minimum of 90 isolation efficiency with 1 deflection. 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. It ships fully assembled in one piece ready for installation on the jobsite. Seismic engineering svcs. Top of all vibration isolation curb shall be level with pitch built into curb when deck slopes.

Application drawings svcsa. Galvanized steel construction with a wood nailing strip for attaching field supplied and applied flashing is standard. Isolated curbs vibro acoustics vibration isolation curbs vcr series come with integral and adjustable spring vibration isolators. 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.

It features removable port covers for convenient spring inspection and adjustment. Vcr curbs vibration isolation curbs series come with integral and adjustable spring vibration isolators. Curb includes vibration isolation between equip ment and roof. 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. Galvanized steel construction with a wood nailing strip for attaching field supplied and applied flashing is standard. 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. Seismic control spec scs.

9 continuous rubber cover around perimeter of vibration isolation curb over spring isolators. 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. Roof curb isolation systems are designed with springs that have static deflections to meet the design criteria. Structural cross and vertical supports when necessary.

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.