Purpose

To secure computer equipment on an access floor.

Note

Seek engineering assistance for the design of the tether spring. Typical equipment to tether:

• Disk drive controllers
• Disk drives
• High speed printers
• Magnetic tape drives
• Printer controllers
• Tape drive controllers

Recommendation

Provide horizontal motion isolators for computer equipment with the following characteristics:

Height

Height less than 1-1/2 times the base width.

Spacing

Moderate spacing (1-1/2 to 3′) between equipment.

Cabinet

Flexible equipment cabinet that cannot be adequately strengthened or stiffened.

Internal Components

Internal components with HIGH vulnerability to vibrating motion.

Supplies Required

• Seismic level pads (with nylon boot)
• Floor penetration guard
• Steel cable tether (with springs)
• Eyebolt with expansion insert—1/2″diameter
• Machine bolt—1/2″ diameter

Installation

1. Provide a leveling pad below each corner of the equipment.
2. Provide a penetration guard around access floor opening.
3. Provide more slack in signal cables than in tether.
4. Provide a steel tether between equipment and floor structure.

Leveling Pad

Source: Noson, Perbix, SSD

Isolated Equipment

Source: Noson, Perbix, SSD