Notes
- Selection Based on Seismic Load Requirements
- Dimensions and Restraint Capacity Data (Attached to Steel or Concrete)
- Download FMS Restraint Units listed on the right for more information
The first step in selecting the FMS is to calculate the forces acting on the equipment using the method indicated by the project specifications or the local building code, whichever is the most severe.
If the FMS is to be used as a restraint only, do the following:
- Determine if the restraint will be attached to steel or anchored to concrete.
- Using the forces calculated in step 1, go to figure 1, Restraint Capacity Envelope, and plot the vertical and horizontal forces.
- Select a restraint where the forces fall within the envelope for the appropriate attachment method (attached to steel or attached to concrete).
If the FMS is to be used as a restraint/vibration isolator, follow these steps:
- Determine the maximum equipment load to be supported by the isolator.
- Refer to Figure 2 for Steel Attachment or Figure 3 for Concrete Attachment.
- Using the forces calculated in step 1, plot the vertical restraint capacity on curve 1 of figure 2 or curve 4 of figure 3 on the vertical axis of figure 1.
- Plot the horizontal restraint capacity from curve 3 or curve 6 on the horizontal axis of figure 1.
- Plot the combined restraint capacity from curve 2 or curve 5 at the point on figure 1 where the vertical and horizontal forces both match this value.
- Connecting these points creates an envelope that shows the capacity of the restraint when subjected to equipment support and seismic loads simultaneously.
- All worst case seismic loads must fall within the envelope to ensure adequate restraint.
Dimensions and Capacities |
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3000 lbs Vert/2500 lbs Horiz Max Isolator Rating 2500 lbs |
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3000 lbs Vert/5200 lbs Horiz Max Isolator Rating 3000 lbs |
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7000 lbs Vert/9900 lbs Horiz Max Isolator Rating 6500 lbs |
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13,300 lbs Vert/16,000 lbs Horiz Max Isolator Rating 10,000 lbs |
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18,200 lbs Vert/24,200 lbs Horiz Max Isolator Rating 21,000 lbs |
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32,000 lbs Vert/43,000 lbs Horiz Max Isolator Rating 24,000 lbs |
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41,000 lbs Vert/72,000 lbs Horiz Max Isolator Rating 24,000 lbs |
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(m) Signifies Metric
Drawing
