Type TIB
An inertia base is normally required when vibrating plant is required to be isolated with high deflection mounts, typically above 10mm deflection. If plant, such as a pump, is placed on springs without a frame base, it will be unstable.
Inertia bases are frame bases into which concrete is poured, which increases the mass of the base, consequently damping down the inertial forces of the plant. The increased mass of the concrete in the base also lowers the centre of gravity of the combined structure, decreasing the base dimensions required to achieve stability. The height of the frame of the base must be at least of the longest dimension between supporting mounts.
Type TIB Inertia bases comprise a frame section manufactured from folded steel sheet typically mm thick. Mounting plates are manufactured from 10mm thick plate. Reinforcing bars are fitted into the bases. The inertia base would normally be finished with grey or red primer ‐ other finishes can be applied as required. Concrete would be supplied and poured into the inertia bases by others.
The base should be placed on a fixed former prior to pouring. Following curing of the concrete, the base should be lifted and the mounts fitted. Height adjustment and levelling of the base can be achieved by adjusting the fixed nut on the mounts, maintaining a minimum dimension of 25mm between the bottom of the base and the supporting structure. We would recommend that the base is temporarily fixed solid by chocks between the bottom of the base and the supporting structure prior to installation of equipment on the base. Following fitting of the supported equipment the chocks should be removed and the base levelled. The inertia bases may be fitted with open springs, restrained springs or neoprene mounts.
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Dimension & Weight Table
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