At their basement, highly enlaced and with channel shapes, those deposits often fill karstic depressions, leading to the formation of " clay wells ".
2.
Strut is usually formed from metal sheet, folded over into an open channel shape with inwards-curving lips to provide additional stiffness and as a location to mount interconnecting components.
3.
"' Bending "'is a manufacturing process that produces a V-shape, U-shape, or channel shape along a straight axis in ductile materials, most commonly sheet metal.
4.
These early tramways were constructed with a shallow rail spiked to longitudinal wood sleepers, but Kincaid recognized the defects of this and introduced a metallic system, which became known by his name, consisting of channel shaped rails fixed on cast-iron chairs embedded in concrete.
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