Corpus sync: neutrality remakes, note hygiene, datasheet relocation, transformer-split cross-refs
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title: Loading Dock Equipment
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## The dock leveler, dock seal or shelter, dock bumpers, vehicle restraint, dock light, and interlock controls are dimensionally and electrically interdependent: bumper projection sets seal compression and trailer stand-off, the leveler model dictates pit dimensions, and the restraint status must be wired to the leveler power enable and the traffic light. Specifying or bidding these as unrelated line items is the root cause of most dock-coordination RFIs, so this Section treats them as one assembly. {note}
−## The equipment covered by this Section shall be furnished and installed under a single responsible Contractor. {note}
+## The equipment covered by this Section shall be furnished and installed under a single responsible Contractor.
## Work of this Section includes pit-type dock levelers, edge-of-dock levelers, portable dock plates and boards, dock bumpers, dock seals and shelters, vehicle restraints, dock lights, and the electrical interlock control system. {note}
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−## Mechanical levelers shall not be specified in cold-storage, freezer, or wash-down environments; hydraulic or air-powered levelers shall be used where the service environment is wash-down, refrigerated, or freezer. {note}
+## Mechanical levelers shall not be specified in cold-storage, freezer, or wash-down environments; hydraulic or air-powered levelers shall be used where the service environment is wash-down, refrigerated, or freezer.
## Trailer Fleet {note}
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−## A vertical-storing leveler with an insulated door and an inflatable or rigid-frame shelter shall be provided at refrigerated and freezer docks; a standard pit leveler shall not be used at a refrigerated dock. {note}
+## A vertical-storing leveler with an insulated door and an inflatable or rigid-frame shelter shall be provided at refrigerated and freezer docks; a standard pit leveler shall not be used at a refrigerated dock.
−## Edge-of-dock levelers shall not be specified where the dock will see high forklift traffic, heavy loads, or routine trailer-height variation exceeding the unit's working range. {note}
+## Edge-of-dock levelers shall not be specified where the dock will see high forklift traffic, heavy loads, or routine trailer-height variation exceeding the unit's working range.
## Edge-of-dock units have a working range of only about ±3 in. and a lower capacity than pit levelers; at an active dock, normal trailer-height variation will exceed that range routinely, so the apparent first-cost saving turns into an operational problem. {note}
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## Dock bumpers absorb the impact of a backing trailer and set the stand-off distance between the trailer and the dock face. That stand-off distance is what determines whether the dock seal compresses correctly and whether the leveler lip reaches the trailer floor. Because bumpers govern both seal compression and trailer position, they must never be left as a furnishing by others. {note}
−## Dock bumpers shall be furnished and installed under this Section at every dock opening; bumpers shall not be omitted or deferred to another trade. {note}
+## Dock bumpers shall be furnished and installed under this Section at every dock opening; bumpers shall not be omitted or deferred to another trade.
## Bumper Type and Projection {note}
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−## Inflatable/pneumatic seals shall be provided at refrigerated and freezer docks where the thermal seal is critical. {note}
+## Inflatable/pneumatic seals shall be provided at refrigerated and freezer docks where the thermal seal is critical.
## Seal and Shelter Dimensions {note}
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- Control panel components and indicator lamps
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