Absorption trench definition

Absorption trench means an excavation in which an absorption line is laid.
Absorption trench means an absorption system consisting of a series of narrow excavated trenches utilizing drain media, chambers, or bundled synthetic aggregate units.
Absorption trench means standard trenches, shallow trenches with capping fill, and chambered trenches constructed to receive and to distribute effluent in such a manner that the effluent is effectively filtered and retained below ground surface.

Examples of Absorption trench in a sentence

  • Absorption trench - a trench excavated into the ground for the purpose of storing an initial volume of rainfall before that water seeps into the soil in which the trench is excavated.

  • FIGURE 4.5 TABLE 4.1REQUIRED LINEAL FEET OF ABSORPTION TRENCH THAT HAS TWELVE INCHES OF DRAINROCK RECEIVING EFFLUENT BY TRICKLE FLOWa a Absorption trench sizing for low pressure distribution is the same as for gravity flow.Loading rates are based on the long term acceptance rates for loam, clay loam, and well structured clays.b Design flows provide a safety factor to cover those individual homes which produce high flow rates.

  • Absorption trench systems placed in earth fill can only be installed over natural soils with a percolation rate range between five and 60 minutes per inch; and absorption bed systems over soils with a percolation rate range of five to 30 minutes per inch.

  • The installation of the following disposal systems is permitted with the approval of Council:• Absorption trench or Evapo-Transpiration Absorption (ETA) Beds as per AS/NZS 1547;• Sub surface irrigation; and• Mound Systems.

  • The installation of the following disposal systems is permitted with the approval of Council: Absorption trench or Evapo-Transpiration Absorption (ETA) Beds as per AS/NZS 1547; Sub surface irrigation; and Mound Systems.


More Definitions of Absorption trench

Absorption trench means a ditch or a trench installed into soil, permeable saprolite, or diggable bedrock, with vertical sides and a substantially flat bottom.
Absorption trench means a long narrow area which includes a pipe for the distribution of septic tank/wastewater treatment effluent.
Absorption trench means an absorption system that consists of excavations 18 to 36 inches in width where the distribution system is laid for the purpose of distributing pretreated waste effluent into the ground.
Absorption trench means a trench excavated between 18 to 36 inches in width for the purpose of distributing pretreated septic system effluent into the ground.
Absorption trench means an absorption system that consists of excavations less than or equal to 3 feet in width where the distribution system is laid for distributing pretreated waste effluent into the ground.
Absorption trench means an excavation in the soil being part of a leaching bed in which a distribution pipe will be or is laid and which allows leaching;
Absorption trench means a disposal field that is a shallow ditch with vertical sides lined with crushed stone 48” or less in width that releases wastewater into the soil through perforated distribution lines.