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In civil engineering, a headwall is a small retaining wall placed at the inlet or outlet of a stormwater pipe or culvert. [2] In medicine, a headwall is the wall at the head end of a hospital bedspace. The bed abuts this headwall perpendicularly, which is furnished with equipment such as regulators for supplemental oxygen, regulators for ...
Steel corrugated culvert with a drop on the exhaust end, northern Vermont. Culverts can be constructed of a variety of materials including cast-in-place or precast concrete (reinforced or non-reinforced), galvanized steel, aluminum, or plastic (typically high-density polyethylene). Two or more materials may be combined to form composite ...
Typically in the form of a horizontal wire or rod, or a helical anchor, a tieback is commonly used along with other retaining systems (e.g. soldier piles, sheet piles, secant and tangent walls) to provide additional stability to cantilevered retaining walls. [1] With one end of the tieback secured to the wall, the other end is anchored to a ...
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.
The 1,700-foot (520 m) pier was designed to carry rail traffic directly out to ships in the harbor. The structure used iron screw piles with wood decking. The pier was later adapted for use by the U.S. Lifesaving Station and the quarantine station. The iron pier shafts remain visible in the harbor, a hazard to navigation. [3]
The term may also be used for the "end walls" of bulkhead flatcars. Mechanically, a partition or panel through which connectors pass, or a connector designed to pass through a partition. In architecture the term is frequently used to denote any boxed in beam or other downstand from a ceiling and by extension even the vertical downstand face of ...
Conversely, the obvert level is the highest interior level, and can be considered the "ceiling" level, being the highest level of that sewer. The bottom of the sewer is called the invert from a general resemblance in construction to an "inverted" arch. [2] An inverted arch is a rounded structure with its crown facing in the downward position.
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.