Using bumpers to restrict horizontal movement

Use this type of attachment when equipment is mounted to a concrete inertia base or steel frame, but:

• The base is not attached to the building, or
• The equipment has a rigid base with a flat surface near the bottom.

Bumpers are used to restrain the base from moving horizontally when there is no chance that the equipment will tip over. Bumpers are only bolted to the building structure. Use post-installed anchors to bolt to concrete, as shown in Figure 76 and 77.

If anchors are near a joint in the concrete, see detail in Figure 77.

Step 1: Determine where to bolt the equipment

Accurately draw the bolt pattern on the floor, concrete pad, or steel beams using one of the following methods:

• Set bumpers in place and mark holes.
• Use measurements and construction drawings to lay out the bolt hole pattern.

Step 2: Install anchors

If the anchors are near a concrete joint, refer to the detail in Figure 77.

Step 3: Install bumpers

Step 4: Attach nuts to the anchor/bolt and torque

Figure 77 shows equipment restrained with bumpers next to a cold joint. Notice in Figure 78 below that the application is near a concrete joint.