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  2. 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.

  3. Culvert - Wikipedia

    en.wikipedia.org/wiki/Culvert

    Culvert with secure headwall in Bromsgrove, England Stone culvert in Haapsalu, Estonia Steel culvert with a plunge pool below A multiple culvert assembly in Italy Precast concrete box culvert Large box culvert on Rio Monterroso. A culvert is a structure that channels water past an obstacle or to a subterranean waterway.

  4. Lincoln Highway in Greene County, Iowa - Wikipedia

    en.wikipedia.org/wiki/Lincoln_Highway_in_Greene...

    The old roadway is no longer used for any purpose, and the grade and cut banks are covered with mowed grass. A partially buried concrete headwall of a driveway culvert is located at the top of the incline. Its design and materials are consistent with other culverts along the old highway.

  5. Eddy Creek (Lackawanna River tributary) - Wikipedia

    en.wikipedia.org/wiki/Eddy_Creek_(Lackawanna...

    The streambed of Eddy Creek is dry in some reaches. Its banks are steep and contain riprap and concrete headwalls. A total of 20 percent of the land in the creek's vicinity is on impervious surfaces. The creek flows through one pipe. Its size is 84 inches (210 cm). [9]

  6. Precast concrete - Wikipedia

    en.wikipedia.org/wiki/Precast_concrete

    A precast concrete walled house under construction An example of low-quality precast concrete with exposed dowels, connectors, indications of cracks, and malformations, even during its installation, Barangay Lantic, Carmona, Cavite, Philippines Interior view of the walls, supports, and roof of a precast commercial shop in Williston, North Dakota, US.

  7. 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.

  8. Bulkhead (barrier) - Wikipedia

    en.wikipedia.org/wiki/Bulkhead_(barrier)

    Construction materials commonly used include wood pilings, commercially developed vinyl products, large boulders stacked to form a wall, or a seawall built of concrete or another hard substance. Coastal property owners typically seek to develop bulkheads in an attempt to slow large landslide erosion caused by wave action.

  9. List of bridges documented by the Historic American ...

    en.wikipedia.org/wiki/List_of_bridges_documented...

    Prestressed concrete girder: 1961 1994 Clara Barton Parkway: Little Falls Branch: Glen Echo: Montgomery: MD-100-A: Suitland Parkway, Henson Creek Culvert Headwalls at Station 200 Plus 35 Extant Culvert: 1944 Suitland Parkway: Henson Creek Suitland

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