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Is a Pier the same as a Dock?

Is a Pier the same as a Dock?

Is a Pier the same as a Dock?

I recently advocated before an Appeals Board for a client wanting to place a moored float with an aluminum gangway attached to a stairway (already existing) in a tidal river.  The client called moored float, a dock in the building permit application submitted to the code enforcement office.  The CEO claimed that since new "piers" are not allowed on the river, and he sees no difference between a pier and a dock, a denial was issued.  

Keep in mind that moored floats are allowed on the tidal river. Regardless of what we have called the "dock" according to the CEO, he views it as a pier by virtue of the gangway connecting the floats to the existing stairway to the edge of water.

I'm interested in hearing from engineers with experience in waterfront design on whether this CEO is correct on the definition of pier being the same as dock (or moored float with a gangway connected to the shore).

Here is the definition of pier I find in dictionary.com

1. a structure built on posts extending from land out over water, used as a landing place for ships, an entertainment area, a strolling place, etc.; jetty.
2. (in a bridge or the like) a support for the ends of adjacent spans.
3. a square pillar.
4. a portion of wall between doors, windows, etc.
5. a pillar or post on which a gate or door is hung.
6. a support of masonry, steel, or the like for sustaining vertical pressure.
7. a long passageway or corridor that extends from a central area of a building, esp. one at an airport that leads to boarding gates.

Here is the definition of dock from dictionary.com

1. a landing pier.
2. the space or waterway between two piers or wharves, as for receiving a ship while in port.
3. such a waterway, enclosed or open, together with the surrounding piers, wharves, etc.
4. dry dock.  
5. a platform for loading and unloading trucks, railway freight cars, etc.
6. an airplane hangar or repair shed.
7. Also called scene dock. a place in a theater near the stage or beneath the floor of the stage for the storage of scenery.
–verb (used with object) 8. to bring (a ship or boat) into a dock; lay up in a dock.
9. to place in dry dock, as for repairs, cleaning, or painting.
10. to join (a space vehicle) with another or with a space station in outer space.
–verb (used without object) 11. to come or go into a dock or dry dock.
12. (of two space vehicles) to join together in outer space.


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