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datum level
datum levelA surface to which elevations, heights, or depths on a map or chart are related. See also altitude.Datum level
datum level[′dad·əm ‚lev·əl] (engineering) datum plane Datum levelA basic level or line used as a reference for determining heights and depths of points or surfaces in building construction. Within any given city, the established datum level is recorded in the building codes, which control the building standards for that city.MedicalSeedatum plane |