drop-down structure definition

drop-down structure means a non-erodable channel or hydrologic structure that discharges water over a fill batter. Drop-down structures may be constructed of gabion baskets, rock mattresses, precast concrete segments, geotextiles or half round sections of plastic, corrugated or concrete pipes. An energy dissipater must be used in conjunction with a drop-down structure.
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Related to drop-down structure

  • Sign structure means the assembled components that make up an outdoor advertising display, including, but not limited to, uprights, supports, facings, and trim. A sign structure may contain 1 or 2 signs per facing and may be double-faced, back to back, T-type, or V-type.

  • Support Structure means a structure in a public right-of-way other than a Pole or a Tower to which a Wireless Facility is attached at the time of the Application.

  • Soil structure means the arrangement of primary soil particles into compound particles, peds, or clusters that are separated by natural planes of weakness from adjoining aggregates.

  • Historic Structure means any structure that is:

  • Permanent structure means a permanent building or permanent structure that is anchored to a permanent foundation with an impermeable floor, and that is completely roofed and walled (new structures require a door or other means of sealing the access way from wind driven rainfall).