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Depending on the jurisdiction, other things like fences, landscaping, septic tanks, and various potential hazards or nuisances might be regulated and prohibited by setback lines. Setbacks along state, provincial, or federal highways may also be set in the laws of the state or province, or the federal government.
They are a notable characteristic of the bluegrass region of central Kentucky, the Ozarks of Arkansas and Missouri, as well as Virginia, where they are usually referred to as rock fences or stone fences, and the Napa Valley in north central California. The technique of construction was brought to America primarily by English and Scots-Irish ...
The fence is installed on a site before soil disturbance begins, and is placed down-slope from the disturbance area. [5] [6] Sediment is captured by silt fences most often through ponding of water and settling, rather than filtration by the fabric. Sand and silt tends to clog the fabric, and then the sediments settle in the temporary pond.
Unconsolidated sand and gravel Well sorted gravel: Well sorted sand or sand and gravel Very fine sand, silt, loess, loam: Unconsolidated clay and organic Peat: Layered clay: Unweathered clay Consolidated rocks Highly fractured rocks Oil reservoir rocks Fresh sandstone: Fresh limestone, dolomite: Fresh granite: k (cm 2) 0.001 0.0001 10 −5: 10 ...
Angle of repose of a heap of sand Sandpile from the Matemateca collection. The angle of repose, or critical angle of repose, [1] of a granular material is the steepest angle of descent or dip relative to the horizontal plane on which the material can be piled without slumping.
Sand fences are employed to control erosion, help sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas. Sand fences are also commonly employed following storm events in order to aid in the dune recovery process, [1] particularly in developed areas where dunes are critical for protection of property. [2]
These properties are storativity (S), specific storage (S s) and specific yield (S y). According to Groundwater , by Freeze and Cherry (1979), specific storage, S s {\displaystyle S_{s}} [m −1 ], of a saturated aquifer is defined as the volume of water that a unit volume of the aquifer releases from storage under a unit decline in hydraulic head.
A fence viewer is a town or city official who administers fence laws by inspecting new fences and settles disputes arising from trespass by livestock that had escaped enclosure. [ 1 ] The office of fence viewer is one of the oldest appointments in New England .