Glossary


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1) Dock bumper

Pieces of rubber located at the floor level of a dock opening to cushion the building from truck trailer impact.

2) Ergonomic

The design of working conditions to better accommodate the human body's capabilities and limitations (human factors).  Ergonomics is also known as the study of work tasks with an emphasis on reducing to a practical minimum the physiological cost of doing the work.

3) Enclosed track

A track section, usually in a rectangular tube shape, that possesses a continuous slot running lengthwise along the underside of the section.  This slot permits carriers and end trucks to travel on the interior bottom flange of the track section.

4) Dock face

The outside wall of the dock door area.

5) Dock plate

A moveable metal ramp that allows access to a rail car or trailer.

6) Dock seal

A rubber or canvas covering that extends out from a dock face to seal the gap between the dock and the trailer's entrance.

7) Folding container

A container, either metal or plastic, with sides, ends, and a base so constructed that it can be folded to a flat configuration.

8) DC

In electrical terms, direct current (as opposed to AC which is alternating current).

9) Electric overhead crane

A crane with a single or multiple girder (bridge girder) bridge carrying a movable or fixed hoisting mechanism and traveling on an overhead fixed runway structure with all or most movements powered by electric motors.

10) Decking

The material, generally made from welded wire, that is placed on shelves, rack load beams or walks to support loads of variable sizes. The decks or flooring of a mezzanine can be made of several different types of materials depending upon the requirements, features and capacity of the mezzanine. These flooring/decking options may include bar grating, plank grating, wood planking, plywood, composite materials and cement.

11) Ergonomic Assist Systems and Equipment (EASE) Industry Group

Ergonomic Assist Systems and Equipment (EASE) is the resource for trends, information, practices, equipment, and organizations that focus on ergonomics and improving the working interface between people and the materials they must move and use to reduce injury, increase productivity while providing a significant return on investment.

12) Electric Hoist

A suspended machinery unit that is powered by electrically driven motors and is used to lift or lower a freely suspended (unguided) load.  Generally uses chain or wire rope as its lifting medium.

13) Double girder crane

An overhead traveling bridge crane that utilizes two bridge beams set atop the runway (end) trucks.  Generally this type of crane utilizes a top running trolley hoist which moves along the top of the two bridge beams on its own set of trucks/trolley wheels.  The hook from the hoist "falls" between the two bridge beams.  Headroom under the crane is increased by utilizing this hoist/crane configuration.

14) Enclosed track monorail

A track section, usually in a rectangular tube shape, that possesses a continuous slot running lengthwise along the underside of the section.  This slot permits carriers and end trucks to travel on the interior bottom flange of the track section.

15) Drayage

Transportation of materials and freight on a local basis, but intermodal freight carriage may also be referred to as drayage.