Inertia Bases


Inertia base

Stage 1 diagram
Stage 1

Stage 2 diagram
Stage 2

Stage 3 diagram
Stage 3

Stage 4 diagram
Stage 4

Specification for Inertia Base

AVC Inertia Bases are manufactured from 14swg rust resistant "Zintec" steel to form a fully welded structural steel frame. Concrete reinforcement is provided by means of a steel mesh welded in position across the frame.

Support lugs of rolled steel channel or angle are welded onto the side of the base at the appropriate centres to distribute the load equally.

The completed base is finished in a two-coat epoxy blue paint as standard.

The base is to be filled with concrete having a mass of between 2300 and 2700Kg / M³

The base should be supported on 25mm deflection spring isolators of the Captive or Open Spring type correctly sized to carry the load imposed by the pumps and concrete.

This has been adopted for many years by engineers as a better solution for vibration control of pumps.

Work to be carried out on site

The inertia base frame to be laid in position on a sheet of plastic or roof felt.

Fill the frame with concrete. Tamp down the level and smooth the surface

Position the item to be isolated onto the concrete and bolt down securely.
Fit the anti-vibration mountings to the pre-drilled isolator brackets on the inertia base.

Using the anti-vibration mounting adjusting screw, jack up the inertia base to give the25mm ground clearance. Make sure the inertia base is level.
If pipework, electrical conduit/trunking, ductwork etc is fixed to items on the inertia base, make sure that they are adequately supported and flexibly isolated from rigidly positioned items external to the inertia base.