underdrains
Below-surface water channels
Underdrains are pipes or channels buried beneath a surface to collect and carry away excess water.
They're installed below agricultural fields to prevent waterlogging, beneath roads and athletic fields to maintain drainage, or around building foundations to direct groundwater away.
The term can also function as a verb: The contractor underdrained the soccer field before laying the turf.
Below the outer layer
- geotextilePermeable construction fabric
- aggregateCombined sum total
- gravelLoose small rock fragments
- trenchLong narrow excavation
excavation · backfill · installation · bedding · outlet · slope · gradient · spacing
Liquid passing through pores
- soil moistureWater in ground
- waterloggingSoil oversaturated with moisture
- root zoneSoil surrounding active roots
- crop yieldAgricultural production amount
farmland · saturation · water table · clay soil · land reclamation · growing season · wet spots · ponding
Foundation beneath railway tracks
- pavementHard road covering
- subgradeSoil layer supporting pavement
- highwayMajor road for travel
- shoulderUpper arm joint
embankment · base course · subbase · frost heave · road surface · asphalt · load bearing · traffic
Subterranean building level
- slabThick flat piece
- foundation wallStructural base enclosure
- waterproofingMaking impervious to moisture
- dampproofingMoisture resistance treatment
sump · crawl space · seepage · footer · moisture barrier · structural integrity
Excess water drainage
- infiltrationCovert entry into organization
- rain gardenPlanted basin absorbing runoff
- water qualityCondition of H2O supply
- peak flowMaximum exhalation speed measure
Outdoor sports surface
- golf courseFacility for club sport
- irrigationArtificial water supply for agriculture
- pitchFrequency of sound
- stadiumLarge venue for spectators
subsurface
Below the outer layer
- geotextilePermeable construction fabric
- aggregateCombined sum total
- gravelLoose small rock fragments
trench · excavation · backfill · installation · bedding · outlet · slope · gradient · spacing · depth
percolation
Liquid passing through pores
- soil moistureWater in ground
- waterloggingSoil oversaturated with moisture
- root zoneSoil surrounding active roots
crop yield · farmland · saturation · water table · clay soil · land reclamation · growing season · wet spots · ponding
roadbed
Foundation beneath railway tracks
shoulder · embankment · base course · subbase · frost heave · road surface · asphalt · load bearing · traffic
basement
Subterranean building level
- slabThick flat piece
- foundation wallStructural base enclosure
- waterproofingMaking impervious to moisture
dampproofing · sump · crawl space · seepage · footer · moisture barrier · structural integrity
runoff
Excess water drainage
- infiltrationCovert entry into organization
- rain gardenPlanted basin absorbing runoff
- water qualityCondition of H2O supply
athletic field
Outdoor sports surface
- golf courseFacility for club sport
- irrigationArtificial water supply for agriculture
- pitchFrequency of sound
underdrainsirrigation systems
Farm water distribution infrastructure
drip irrigation · water mains · sprinkler systems · water supply lines · soaker hoses