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2. Ha-ha - Wikipedia

   en.wikipedia.org/wiki/Ha-ha

   Comparison of a ha-ha (top) and a regular wall (bottom). Both walls prevent access, but one does not block the view looking outward. A ha-ha (French: hâ-hâ [a a] ⓘ or saut de loup [so də lu] ⓘ), also known as a sunk fence, blind fence, ditch and fence, deer wall, or foss, is a recessed landscape design element that creates a vertical barrier (particularly on one side) while preserving ...

3. Miami Beach Architectural District - Wikipedia

   en.wikipedia.org/wiki/Miami_Beach_Architectural...

   The Miami Beach Art Deco Museum describes the Miami building boom as coming mostly during the second phase of the architectural movement known as Streamline Moderne, a style that was “buttressed by the belief that times would get better, and was infused with the optimistic futurism extolled at American’s World Fairs of the 1930s.” [4]

4. Shark barrier - Wikipedia

   en.wikipedia.org/wiki/Shark_barrier

   A shark barrier (otherwise known as a "shark-proof enclosure" or "beach enclosure") is seabed-to-surface protective barrier that is placed around a beach to protect people from shark attacks. Often confused with shark nets , shark barriers form a fully enclosed swimming area that prevents sharks from entering (nets aim to reduce shark ...

5. New York Harbor Storm-Surge Barrier - Wikipedia

   en.wikipedia.org/wiki/New_York_Harbor_Storm...

   With normally-open storm-surge gates, barriers alone will not address sea level rise, but neither will local shoreline storm-surge projects planned by New York City, which will also have gates. The SIRR report, itself, found that by the 2050s 43 miles, or about 8%, of the city's coastline could be at risk of flooding during non-storm conditions.

6. Tetrapod (structure) - Wikipedia

   en.wikipedia.org/wiki/Tetrapod_(structure)

   A tetrapod is a form of wave-dissipating concrete block used to prevent erosion caused by weather and longshore drift, primarily to enforce coastal structures such as seawalls and breakwaters. Tetrapods are made of concrete , and use a tetrahedral shape to dissipate the force of incoming waves by allowing water to flow around rather than ...

7. Floodgate - Wikipedia

   en.wikipedia.org/wiki/Floodgate

   Floodgates, also called stop gates, are adjustable gates used to control water flow in flood barriers, reservoir, river, stream, or levee systems. They may be designed to set spillway crest heights in dams , to adjust flow rates in sluices and canals , or they may be designed to stop water flow entirely as part of a levee or storm surge system.

8. Tainter gate - Wikipedia

   en.wikipedia.org/wiki/Tainter_gate

   Tainter gates are usually controlled from above with a chain/gearbox/electric motor assembly. A critical factor in Tainter gate design is the amount of stress transferred from the skinplate through the radial arms and to the trunnion, with calculations pertaining to the resulting friction encountered when raising or lowering the gate. Some ...

9. Tube (structure) - Wikipedia

   en.wikipedia.org/wiki/Tube_(structure)

   By 1963, a new structural system of framed tubes had appeared in skyscraper design and construction. Fazlur Rahman Khan, a structural engineer from Bangladesh (then called East Pakistan) who worked at Skidmore, Owings & Merrill, defined the framed tube structure as "a three dimensional space structure composed of three, four, or possibly more frames, braced frames, or shear walls, joined at or ...