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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 ...
The St. Alban's Bay Culvert is functionally a concrete box culvert. However it has 40-foot-long (12 m) headwalls faced with random ashlar of local granite. This facing is about 9 inches (23 cm) thick, disguising a core of mortared lake boulders. The walls rise 2 feet 9 inches (84 cm) over the height of the roadbed to form a low railing.
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 ...
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.
Forterra, Inc. (NYSE: FRTA) manufactures pipe and precast concrete products, provides portable precast bridges and drainage inlets, wing walls, headwalls, junction boxes, end parts of the pipe ...
A culvert pipe under a road is a common target for beaver damming because the constriction speeds up the current and may resemble a hole in a dam. With a little work, a beaver can quickly plug a culvert with mud and sticks, and turn the entire roadbed into a large dam.
We finally—finally—made it to the end of the year. And though the music releases have gone from summer’s deluge to a steady trickle, that doesn’t mean there aren’t some great new songs ...
Northwest entrance. The road features typical Park Service rustic details such as stone retaining walls and culvert headwalls. It is designed to work naturally with the landscape to provide a progression of views to motorists without adverse impact on the land.