A trench is a type of excavation or in the ground that is generally deeper than it is wide (as opposed to a wider gully, or ditch), and narrow compared with its length (as opposed to a simple hole or pit).
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What defines a trench?
A trench is defined as a narrow excavation (in relation to its length) made below the surface of the ground. In general, the depth of a trench is greater than its width, but the width of a trench (measured at the bottom) is not greater than 15 feet (4.6 m).
What is the difference between a ditch and a trench?
Ditch is: a long narrow hole dug at the side of a field, road etc to hold or remove unwanted water. Trench is: a long narrow hole dug into the surface of the ground.
What is a trench in building?
TRENCH: An excavation in which material removal forms a narrow opening in the ground. Unlike large excavations, a trench is generally deeper than it is wide. OSHA considers an excavation to be a trench if it is 15 feet wide or less at the bottom of the excavation.
Is a trench deeper than it is wide?
Generally speaking, an excavation is a hole in the ground as the result of removing material. A trench is an excavation in which the depth exceeds (is bigger than) the width.
What is an example of a trench?
The Mariana Trench, in the South Pacific Ocean, is formed as the mighty Pacific plate subducts beneath the smaller, less-dense Philippine plate. In a subduction zone, some of the molten material—the former seafloor—can rise through volcanoes located near the trench.
What is the synonym for trench?
noun. ( ˈtrɛntʃ) A ditch dug as a fortification having a parapet of the excavated earth. Antonyms. deglycerolize disarrange divest disorganize disorganise call option undeceive. intrenchment fosse communication trench slit trench moat.
What is a drainage ditch called?
A swale is like a ditch but it’s broad and shallow, and usually covered or lined with turfgrass or other vegetation. The purpose is to slow and control the flow of water to prevent flooding, puddling, and erosion and/or avoid overwhelming the storm drain system.
What is a long ditch called?
TRENCH. a ditch dug as a fortification having a parapet of the excavated earth. any long ditch cut in the ground. a long steep-sided depression in the ocean floor. dig a trench or trenches; “The National Guardsmen were sent out to trench”
Is a trench a ditch?
A trench is a long narrow ditch. Ditches are commonly seen around farmland especially in areas that have required drainage, such as The Fens in eastern England and the Netherlands.
What are the 4 types of trenches?
- Front-line Trench. This type of trench was also known as the firing-and-attack trench.
- Support Trench. This trench was several hundred yards behind the front-line trench.
- Reserve Trench. The reserve trench was several hundred yards behind the support trench.
- Communication Trench.
What are trenches used for?
Trenches provided relative protection against increasingly lethal weaponry. Soldiers dug in to defend themselves against shrapnel and bullets. On the Western Front, trenches began as simple ditches and evolved into complex networks stretching over 250 miles (402 kilometres) through France and Belgium.
What is an underground trench?
A trench is a type of excavation or in the ground that is generally deeper than it is wide (as opposed to a wider gully, or ditch), and narrow compared with its length (as opposed to a simple hole or pit).
How does a trench collapse?
A trench collapses when its walls fail to contain the pressure of the tones of soil pressing on it. Even though this can be problematic in any depth, it can accelerate if other materials are piled at the edge.
When a trench is 4 feet or more in depth?
A stairway, ladder, ramp or other safe means of egress shall be located in trench excavations that are 4 feet (1.22 m) or more in depth so as to require no more than 25 feet (7.62 m) of lateral travel for employees.
Why are trenches full of water?
Much of the land where the trenches were dug was either clay or sand. The water could not pass through the clay and because the sand was on top, the trenches became waterlogged when it rained. The trenches were hard to dig and kept on collapsing in the waterlogged sand.
What is the deepest trench on Earth?
The Mariana Trench
The Mariana Trench, in the Pacific Ocean, is the deepest location on Earth. According to the Exclusive Economic Zone (EEZ), the United States has jurisdiction over the trench and its resources.
Who created the trenches?
The tactical ancestor of modern trench warfare was the system of progressively extended trenches developed by the French military engineer Sébastien Le Prestre de Vauban for the attack of fortresses in the 17th century.
Why should trenches be dug?
The Empire’s builders also had to protect their water supply system while ensuring that it reached its destination. In order to do this, they dug trenches, installed pipes and backfilled them, burying the pipes underground out of reach of potential enemy attack. This type of cut-and-cover method is still in use.
What is a narrow trench called?
canyon. A long, deep, narrow valley with steep cliff walls, cut into the Earth by running water and often having a stream at the bottom. 0.
What is the opposite of a trench?
Opposite of ditch, channel dug in earth. hill. hump. mound. rampart.