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  2. Wing wall - Wikipedia

    en.wikipedia.org/wiki/Wing_wall

    A wing wall (also "wingwall" or "wing-wall") is a smaller wall attached or next to a larger wall or structure. Bridges

  3. Headwall - Wikipedia

    en.wikipedia.org/wiki/Headwall

    Headwall and corrie lake Cwm Idwal. In physical geography and geology, the headwall of a glacial cirque is its highest cliff.The term has been more broadly used to describe similar geomorphic features of non-glacial origin consisting of a concave depression with convergent slopes typically of 65 percent or greater forming the upper end of a drainage valley.

  4. Culvert - Wikipedia

    en.wikipedia.org/wiki/Culvert

    A culvert under the Vistula river levee and a street in Warsaw. Construction or installation at a culvert site generally results in disturbance of the site's soil, stream banks, or stream bed, and can result in the occurrence of unwanted problems such as scour holes or slumping of banks adjacent to the culvert structure.

  5. St. Alban's Bay Culvert - Wikipedia

    en.wikipedia.org/wiki/St._Alban's_Bay_Culvert

    The St. Alban's Bay Culvert is a historic bridge in Garrison Township, Minnesota, United States. It carries the four-lane U.S. Route 169 (US 169) over the head of a stream flowing out of Mille Lacs Lake. It was built from 1938 to 1939 as part of a major New Deal project to create a scenic parkway along the lakeshore.

  6. Drop structure - Wikipedia

    en.wikipedia.org/wiki/Drop_structure

    The vertical hard basin drop structure, also called a dissipation wall, is the basic type of drop structure.The vertical hard basin drop consists of a vertical cutoff wall, usually built of concrete, that is usually laid perpendicular to the stream flow, and an impact basin, not unlike a stream pool, to catch the discharged water.

  7. Abutment - Wikipedia

    en.wikipedia.org/wiki/Abutment

    The superstructure of Kurobe Dam in Japan rests on opposing concrete abutments Abutment for a large steel arch bridge Brick abutment supporting disused tramway over the Yass River in Yass, New South Wales Cream-colored concrete abutment gives vertical support to both the small iron rail bridge and earthen fill of the bridge approach embankment at Old Town Station Staten Island Railway - Staten ...

  8. Headward erosion - Wikipedia

    en.wikipedia.org/wiki/Headward_erosion

    Headward erosion creates three major kinds of drainage patterns: dendritic patterns, trellis patterns, and rectangular and angular patterns. Dendritic patterns form in homogenous landforms where the underlying bedrock has no structural control over where the water flows.

  9. Tieback (geotechnical) - Wikipedia

    en.wikipedia.org/wiki/Tieback_(geotechnical)

    Tiebacks to reinforce a slurry wall at Ground Zero, New York. In geotechnical engineering, a tieback is a structural element installed in soil or rock to transfer applied tensile load into the ground.