A-L

Product:
The base to be type K (Spring Mounted Inertia Bases – Concrete, Welded) or type BMK (Spring Mounted Inertia Bases – Concrete, Bolted), as manufactured by Mason UK Ltd.
Anti-vibration mountings to be type ND (Double Deflection Neoprene Mounts), as manufactured by Mason UK Ltd.

Performance:
Mounting must have a minimum static deflection/compression of [VARIABLE DEFLECTION] under the operating load.

Geometry:
Bases shall be a minimum of 1/12 of the longest dimension of the base but not less than 152mm.
Forms shall include minimum concrete reinforcing consisting of A-393 mesh welded at least 25mm from the bottom.
The ratio of mounting free and operating height to be no more than 15%.

Housing:
Mounting must be free standing and colour coded.
All metal surfaces shall be neoprene covered and have friction pads both top and bottom.

Installation:
All mountings need to have levelling bolts that must be rigidly bolted to the equipment or metal frame.
When installed, all operating heights must be equal.