As a result of the major earthquake in California in the early 90 "s the
company I
worked for sustained major damage from a domino effect. The clips type of
shelving caused the most damage since they just pulled apart. We also found that
independent units were the best (four uprights per unit with sway braces and
angle gussets). Most of this type of equipment stood the major quake. Bolting
to floor with top aisle braces both for independent aisles and the main aisle.
Another main caution is not to place heavy materials on top shelves. Weight
goes with shock impact.

Bill Benedon

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