Vibro Base Inertia VRCB
Model VRIB – VIBRO BASE inertia base frames, once filled with concrete, fully comply with all inertia base specifications. When paired with appropriate VIBRO ISOLATORS, they deliver superior performance in equipment isolation, structural support, secure anchorage, and effective control of vibration amplitude.
Key Specifications
These frames feature a distinctive structural configuration that combines perimeter channels, isolator mounting brackets, reinforcing steel rods, anchor bolts, and concrete fill into a unified load transfer system.
Product Details
Purpose
Model VRIB – VIBRO BASE inertia base frames, once filled with concrete, fully comply with all inertia base specifications. When paired with appropriate VIBRO ISOLATORS, they deliver superior performance in equipment isolation, structural support, secure anchorage, and effective control of vibration amplitude.
These frames feature a distinctive structural configuration that combines perimeter channels, isolator mounting brackets, reinforcing steel rods, anchor bolts, and concrete fill into a unified load transfer system. This design strategically employs steel under tension and concrete under compression, achieving exceptional strength and rigidity with minimal steel usage. Inertia bases constructed with VIBRO BASE frames demonstrate greater stiffness and durability compared to conventional designs that rely on heavier steel components.
VIBRO BASE inertia base frames are purpose-engineered to accept poured concrete, forming a reinforced foundation for mechanical equipment that demands a concrete-filled inertia base. These bases serve a wide range of functions: they support mechanical systems, minimize vibration transmission, provide secure mounting for vibration isolators, and prevent misalignment between connected components. Additionally, they help stabilize equipment by lowering its center of gravity, reduce movement during start-up and shut-down cycles, absorb reaction forces from operational loads, and act as an effective barrier to airborne noise.
Typical applications for VIBRO BASE inertia base frames—when filled with concrete and supported by VIBRO ISOLATORS—include open-type centrifugal chillers, reciprocating air and refrigeration compressors, chillers and heat pumps, close-coupled and base-mounted pumps, centrifugal fans, internal combustion engines, and other vibration-sensitive equipment.
frames are offered in thicknesses ranging from 150 mm (6″) to 350 mm (14″). Each unit includes integrated isolator brackets, a steel channel perimeter for concrete pouring, 13 mm (½”) reinforcing rods spaced at 203 mm (8″) intervals in both directions, and pre-positioned steel anchor bolts. Frames are delivered to site fully welded and ready for concrete filling, significantly reducing on-site labor and installation time ensuring optimal cost-efficiency.
Isolation bases shall consist of concrete cast into precision-fabricated inertia base frames, with steel components designed and provided by the isolator manufacturer. The concrete is to be poured into a fully welded steel frame that includes pre-positioned anchor bolts for equipment mounting, 13 mm (½”) diameter reinforcing bars spaced at nominal 203 mm (8″) intervals in both directions, and recessed isolator brackets to minimize equipment mounting height and reduce the overall footprint of the base.
The base thickness shall be no less than 8% of the longest span between isolators, with a minimum of 152 mm (6″), or as otherwise specified in the project drawings. For pump installations, inertia bases must be dimensioned to accommodate piping elbows, or supplemented with additional support using VIBRO ISOLATORS where required.
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