Seismic Roof Curb

Vibration isolation roof curb and rail.

Seismic roof curb.

The goal is to match or exceed the seismic roof curb design value referred to as the ss value. Heavy duty complete vibration isolation roof curb and rail for over 20 ton packaged rooftop units. The additional requirements are detailed on each stamped submittal drawing. Additional roof curb anchoring and methods of securing equipment to the curb are also a requirement and must be adhered to for the certification to be valid.

Additionally seismic requirements are not fulfilled by just ordering a seismically stamped roof curb. These curbs come fully assembled with return and supply duct supports unit wind restraints and fiberglass as required and gasket material included for airtight rtu installation. Ss is the mapped maximum credible earthquake five percent dampened spectral response acceleration parameter at short periods as defined in asce 7 10 section 11 4 1. Steel shall be at least.

Bolts should be with nuts and washers. Kinetics esr features high frequency noise isolation pads code compliant seismic and wind restraint and access ports for each isolator to inspect level or change springs after equipment placement. The width of the supporting structural. For buildings seismic requirements our seismic factory roof curbs are new construction curbs for hvac units on flat membrane or built up roofs requiring seismic rating.

Seismic roof curb detail. Seismic roof curbs isolation roof curbs also protect the occupants inside the building by preventing the rooftop packaged unit from jumping off the curb during a seismic event and potentially falling through the roof structure.