The placement of a tagout device on an energy isolating device, in accordance with an established procedure, to indicate that the energy isolating device and the equipment being controlled may not be operated until the tagout device is removed. See lockout and clearance.
- Browse Related Terms: Clearance, connection, Geophysics, Interbasin Transfer, Lockout, Lockout device, Net capability, Tagout, Tagout device
A prominent warning device, such as a tag and a means of attachment, which can be securely fastened to an energy isolating device in accordance with an established procedure, to indicate that the energy isolating device and the equipment being controlled may not be operated until the tagout device is removed.
- Browse Related Terms: Clearance, connection, Geophysics, Interbasin Transfer, Lockout, Lockout device, Net capability, Tagout, Tagout device
Second grade or waste material separated from pay material during screening or processing.
- Browse Related Terms: Cairn, French drain, Galvanize, Hazardous waste sites, Mine tailings dam, Stockpile, Tailings
Also listed in:
- All > Science > Weather > Climate Change
See mine tailings dam.
- Browse Related Terms: BCD, Camber, DD, Dike, Diversion capacity, Downstream face, Earth Dam or Earthfill Dam, Flood Wave, Fluctuating flows, Gabion dam, Hydraulic fill structure, Impoundment, Irrigation check, Overtopping, Pond, Rolled Earth Dam, Saddle dam, Seepage collar, Tailings dam., Toe Drain (or Outfall), Toe of Dam, Toe of Dam (Upstream and Downstream), Top of dam., Upstream face
See afterbay.
- Browse Related Terms: Dam, Regulating dam (reregulating dam), Reregulation dam., Tailrace.
The water in the natural stream immediately downstream from a dam. The elevation of water varies with discharge from the reservoir. Applied irrigation water that runs off the lower end of a field. Tailwater is measured as the average depth of runoff water, expressed in inches or feet.
- Browse Related Terms: Adirondack Type Snow Sampling Set, Infiltration Index, MAP (Mean Areal Precipitation), Micron, Miners' Inch, Rod, Tailwater, Trace (of Precipitation)
Height of water immediately downstream of the dam. (Various datums may be used.)
- Browse Related Terms: High dam, Low dam, Medium-height dam, Pool Height, Tailwater Height
Also listed in:
A term used by the Corps of Engineers to describe radial gates (see gate).
- Browse Related Terms: Access shaft, Barrage (gate-structure dam), Bascule gate., Best gate, Cylinder gate, Flap gate, Full gate, Gate hanger, Roller drum gate., Shaft house, Tainter gate
Sloping accumulation of rock debris; also, rock fragments at the base of a cliff as the result of slides or falls. Rock fragments mixed with soil at the foot of a natural slope from which they have been separated. Accumulation of broken rocks or boulders at the base of a cliff.
Also listed in:
- All > Science > Energy > Renewable Energy > Solar Energy
To pound or press soil to compact. To firmly compact earth during backfilling.
- Browse Related Terms: compaction, Dumped, Jetting, Ponding (or flooding), Puddle, Puddling, Rolling, Saturation (and internal vibration), Shrinkage, Sluicing, Subgrade, Surface vibration, Tamp, Tamper, Tamping, Tamping roller, Undisturbed sample, Unified Soil Classification System
A tool for compacting soil in spots not accessible to rollers.
- Browse Related Terms: compaction, Dumped, Jetting, Ponding (or flooding), Puddle, Puddling, Rolling, Saturation (and internal vibration), Shrinkage, Sluicing, Subgrade, Surface vibration, Tamp, Tamper, Tamping, Tamping roller, Undisturbed sample, Unified Soil Classification System
A method of compacting soil using the impact of a power or hand tamper on the surface of the soil placed.
- Browse Related Terms: compaction, Dumped, Jetting, Ponding (or flooding), Puddle, Puddling, Rolling, Saturation (and internal vibration), Shrinkage, Sluicing, Subgrade, Surface vibration, Tamp, Tamper, Tamping, Tamping roller, Undisturbed sample, Unified Soil Classification System
One or more steel drums, fitted with projection feet, used to densify soil. See sheepsfoot roller.
- Browse Related Terms: compaction, Dumped, Jetting, Ponding (or flooding), Puddle, Puddling, Rolling, Saturation (and internal vibration), Shrinkage, Sluicing, Subgrade, Surface vibration, Tamp, Tamper, Tamping, Tamping roller, Undisturbed sample, Unified Soil Classification System
A pair in which one part follows the other.
- Browse Related Terms: Area-capacity table, Exclusive flood control capacity, Floodproofing, Freeboard, Maximum flood control level, Meniscus, Photogrammetry, reservoir, Surcharge capacity (surcharge storage), tandem, Top of active conservation capacity, Top of exclusive flood control capacity, Top of joint use capacity, Total capacity
Also listed in:
A line that touches a circle and is perpendicular to its radius at the point of contact.
- Browse Related Terms: Armoring., Chamfer, Pitching, Rip Rap, Slope protection, Tangent, Upstream Slope
A big root that grows downward from the base of a tree.
- Browse Related Terms: Contour farming, Contour strip farming, Crop rotation, Cropping pattern, Intrusion, Irrigated acreage, On-farm, Sodic soil, Strip cropping, Taproot, Theory, Understory, Vegetative controls
The science that deals with the structure of the earth's crust.
- Browse Related Terms: Amplification, Geology, Grizzly (grizzlie), Lithosphere, Mantle, Rock excavation, Seismic, Soil, Tectonics, Telescope, Wedge
A pipe fitting that has two threaded openings in line, and a third at right angles to them.
- Browse Related Terms: Air release valve, Bell, Check valve, Curb stop (curb cock), Elbow, Polyvinyl Chloride (PVC), Tee, Wellpoint, Wye branch (Y branch)
To slide one piece inside another.
- Browse Related Terms: Amplification, Geology, Grizzly (grizzlie), Lithosphere, Mantle, Rock excavation, Seismic, Soil, Tectonics, Telescope, Wedge
Irrigable land for which a water supply is delivered under temporary arrangements. The acreage may vary from year to year. When repayment and water service contracts are finalized upon such lands, they will be placed in either the Full or the Supplement Service category.
- Browse Related Terms: arid, Deed covenant, Excess land, Exempt land, Irrigable acreage for service (irrigable area for service), Irrigation district, Land classification, Landholder, Reclamation Reform Act of 1982 (RRA), Temporary irrigation service land