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Berms (Pmhdb)

Narrow shelves or ledges; also a form of dike. In more detail: the space left between the upper edge of a cut and the toe of an embankment; or a horizontal strip or shelf built into an embankment to break the continuity of an otherwise long slope. Also, the top surface or plane of a shoulder, ledge, or bank constructed in connection with the road. Also, the raised, elongated areas of earth intended to direct the flow of water, to visually screen, to redirect out-of-control vehicles, or to reduce noise levels by shielding the highway; also a horizontal ledge in an earthbank to increase stability of a steep slope. Or, earthwork used to redirect or slow down impinging vehicles or vessels and to stabilize fill, embankment, or soft ground and cut slopes. (Source: AASHTO Glossary)
Broader Term
Coast and river protective works (Pmhd)
Related Terms (Hierarchical)
Breakwaters (Pmhdc)
Bulkheads (Hydraulics) (Pmhdd)
Dikes (Pmhdh)
Groins (Hydraulics) (Pmhdj)
Jetties (Pmhdk)
Levees (Pmhdm)
Polders (Pmhdp)
Revetments (Pmhdr)
Riprap (Pmhdt)
Sea walls (Pmhdv)