Seismic Design and Restraint systems for HVAC equipment and piping
Seismic Cabling
SCR Series
Up to 4200lb. Capability
Seismic cable restraints are an excellent way to restrain suspended equipment and utlities, piping and ductwork during an earthquakeor seosmic event. Cables are able to be used in conjunction with externally mounted vibration isolator systems whereas rigid bracing is not.
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Single Arm Braces
SAB Series
Up to 2400lb. Capability
The SAB series offers an ideal solution for restraining suspended equipment, piping, ductwork and electrical cable trays during an earthquake. The SAB series is designed for use with equipment that does not have external vibration isolation systems. With the SAB series, non-isolated ductwork, piping, and conduits that are rigidly supported can still be seismically restrained.
VMC single arm braces consist of two brackets that allow the brace a full range of motion in all directions. This provides easy installation and saves on contractor labor costs. The bracing material - typically channel strut or angle steel - is contractor supplied and cut to size in the field.
Seismic Roof Curbs
Model: P Series & R Series
VMC's "P" series curbs and "R" series rails are high quality, fully adjustable support systems specifically designed for rooftop unit vibration isolation and seismic/wind restraint. Each unit incorporates both the roof curb and spring isolation into one complete structure. VMC engineers design each curb and rail to custom fit any rooftop mechanical equipment.
These fully flashable rooftop support systems also save the contractor unnecessary labor costs. The curb and and rooftop unit can be fully installed and adjusted before the roof is sealed, eliminating the possibility of any damage to a finished roof.
Seismic Rod Bracing Clamps
SRBC Series
Rod Stiffeners are seismic rod bracing clamps used as additional support for bracing threaded rods used to suspend piping, ducts, conduit and other HVAC equipment.
Seismic forces act in all directions. Threaded rods are sized purely for gravity loads, making it necessary to add additional rod bracing to prevent buckling of the rods. Uplift forces can easily exceed the dead load on the rod – resulting in compressive forces. If not braced, the rod can buckle and fail. With the addition of the VMC SRBC Series bracing clamp, angle steel bracing can be quickly and easily added to the rod.
