As wide as the base plate of the curb.
Seismic 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.
The goal is to match or exceed the seismic roof curb design value referred to as the ss value.
Seismic roof curb detail.
Steel shall be at least.
Vibration isolation roof curb and rail.
The conclusive value will be between 0 and 3 73 highest value in california.
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.
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.
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 additional requirements are detailed on each stamped submittal drawing.
Heavy duty complete vibration isolation roof curb and rail for over 20 ton packaged rooftop units.
Additionally seismic requirements are not fulfilled by just ordering a seismically stamped roof curb.
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.
The width of the supporting structural.