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Each dock must be equipped with a type of dock bumper to protect the building from vehicle impact damage. Keep in mind that an approaching vehicle can generate up to 300,000 lb. of impact force. Several styles of bumper are available to suit application requirements.
In addition to the impact forces, when a truck/trailer is in position at a dock, the dock bumpers are continually affected by the friction and abrasion created when the truck/trailer body rubs up and down against the bumpers. This friction and abrasion are especially significant with “Air Ride” equipped vehicles.
Larger sized dock bumpers and steel faced bumpers (Fig 3) are recommended to effectively deal with these conditions.
For typical level approach applications, bumper projection should be specified at not less than 4". For recessed docks or special applications, additional projection or build-out boxes may be required. Shown here are the most common style of dock bumpers- molded rubber (Fig 1) and laminated rubber (Fig 2) Steel face bumpers are used for high frequency or heavy impact applications, or where jockey trucks are used for trailer positioning (Fig 3). A steel plate face on the bumper offers protection against the unusual wear and biting out of the rubber created by these operations. |
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