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In archaeology, a linear earthwork is a long bank of earth, sometimes with a ditch alongside. There may also be a palisade along the top of the bank. Linear earthworks may have a ditch alongside which provides the source of earth for the bank and an extra obstacle. There may be a single ditch, a ditch on both sides or no ditch at all.
Concrete used for canal lining is typically non-reinforced, as a way to reduce cost. A common method for constructing concrete lining is the use of slip forms, which are drawn down the length of the canal as the concrete is poured. [3] Hand laying of concrete or prefabricated sections are also used when only a short distance needs to be covered ...
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.
A ditch and earth bank at Old Sarum, near Salisbury in England, dating from the Iron Age. Ditch of Valletta, which was built between 1566 and the 1570s.. In military engineering, a ditch is an obstacle designed to slow down or break up an attacking force, while a trench is intended to provide cover to the defenders.
The following table lists the largest man-made dams by volume of fill/structure. By general definition, a dam is a barrier that impounds water or underground streams, hence tailings dams are relegated to a separate list.
The south Oxfordshire Grim's Ditch, also known as the Mongewell Ditch is a 5-mile (8 km) section between Mongewell on the banks of the Thames near Wallingford, and Hayden Farm near Nettlebed in the Chilterns escarpment. Part of the western end was excavated during the building of Winterbrook Bridge, and dated as late Iron Age/early Roman. The ...
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A trench is a type of excavation or depression in the ground that is generally deeper than it is wide (as opposed to a swale or a bar ditch), and narrow compared with its length (as opposed to a simple hole or pit). [1] In geology, trenches result from erosion by rivers or by geological movement of tectonic plates.
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