Using restrained springs on leveling stanchions

Figure 93 shows a typical installation of restrained spring vibration isolated equipment on stanchions and an equipment support frame.

More than four restrained springs may be required. See the manufacturer’s instructions.

Verify that the spring is properly aligned according to the manufacturer’s recommended clearances. If the spring shaft rubs against the snubber element, a shortcircuit may occur, causing noise problems.

Step 1: Attach posts or stanchions

Bolt or weld stanchions to the building structure. Refer to the detail in Figure 83 for attaching stanchions to different building structure types. Support stanchions can be made from many different structural shapes.

Coordinate attachment points with general contractor. Additional intermediate building structure beams may be required to accommodate the equipment.

THE BUILDING STRUCTURE MUST BE CAPABLE OF SUPPORTING THE POINT LOAD OF THE STANCHIONS.

Step 2: Apply flashing to stanchions

Use standard details to flash around pipe stanchions or steel tubing. For flashing around a stanchion, which may not be uniform like an angle, channel, or I-beam steel shape, refer to Figure 84.

Step 3: Weld/bolt equipment support frame to stanchion

The equipment support frame may be box-shaped or have two parallel beams. The equipment support frame may be made from steel shapes such as angles, tubes, channels, or I-beams.

Step 4: Attach restrained springs

Attach restrained springs to the steel frame using steel bolts.

The support frame should be as wide or wider, if welded, than the base plate of the component fitted with the restraint device.

Step 5: Install equipment on springs

Install equipment on springs with attachment nuts and level.

Bases are required for mounting equipment with restrained springs. Do not use restrained springs on a built-up curb.