pervious surface definition

On-grade surface treatments used for purposes of recreation (e.g. 1. En général, seule la forme au masculin singulier est donnée. The minimum pervious surface percentage shall be as required by the development standards for the Residential and Residential Flat zones. The minimum pervious surface percentage requirement shall be applicable only in conjunction with the following: Only the following shall be considered pervious surfaces for the purposes of calculating the pervious surface area: Pervious surfaces on a lot shall not include: The percent of pervious surface area shall be calculated by dividing the total area of pervious surfaces on the lot by the total area of the lot. traduction pervious dans le dictionnaire Anglais - Francais de Reverso, voir aussi 'previous',perilous',previously',perfidious', conjugaison, expressions idiomatiques Permeable pavement surfaces are made of either a porous material that enables stormwater to flow through it or nonporous blocks spaced so that water can flow between the gaps. OPEN JOINTED BLOCKS WITH PERVIOUS JOINTS Interlocking concrete or stone units have spaces between their joints that are filled with a pervious material, such as fine gravel or sand. Pervious, permeable, and porous pavers (the three Ps) often are used interchangeably by professionals without regard to their unique characteristics. Why are impervious surfaces bad? Pervious surface means any surface material that allows stormwater to infiltrate into the ground. Surface ratios are divided into three intensity groups: Intensity Category *Intensity Threshold Zoning Process Low Intensity Maximum ISR .50 Zoning Certificate Moderate Intensity Maximum ISR .65 PUD I High Intensity ISR over .65 PUD II *Intensity thresholds for some uses may vary from those thresholds depicted above. The construction of a new principal structure; An addition to a principal or accessory structure, other than a historic resource, that increases the existing lot occupancy at the time of a building permit application by 10% or more; The construction of a new accessory structure that increases the existing lot occupancy at the time of a building permit application by 10% or more; or. It may not need to be replaced for 30 years or more (as comparedThe pavers’ ridges ensure that they are installed with the proper spacing, which allows water to drain between the pavers.with 20 years for standard asphalt). Example sentences with "pervious to water", translation memory. Pervious materials permit water to enter the ground by virtue of their porous nature or by large spaces in the material. (permeable) perméable adj adjectif: modifie un nom. patios), outdoor stairways, walking, driving and parking areas made of concrete, brick, asphalt, decorative pavers, compacted gravel or other material that does not facilitate the infiltration of water directly into the subsurface of the lot; The building footprint based on its foundation perimeter, whether located below grade or at grade; Where a building does not have a foundation, the area of the roof; and. These could be houses, sheds, driveways, sidewalks, and patios. When it comes to asphalt, whether you hear “pervious,” “permeable,” or “porous,” chances are that the same thing is meant – a surface designed to allow water to infiltrate instead of running off. A pervious surface is a surface that allows the percolation of water into the underlying soil. Définition pervious dans le dictionnaire anglais de définitions de Reverso, synonymes, voir aussi 'previous',perviously',perilous',perviousness', expressions, conjugaison, exemples pervious rock. An aesthetically pleasing surface that could increase your property value. Pervious definition: able to be penetrated ; permeable | Meaning, pronunciation, translations and examples For more information on the following topic, please see the corresponding referenced chapter: Blagden Alley Residential Transition Area, Massachusetts Avenue Corridor and Mt. Keep scrolling for … Stormwater flows into and is stored in an underlying stone reservoir. pervious adj adjective: Describes a noun or pronoun--for example, "a tall girl," "an interesting book," "a big house." We will reclassify those land-use types into either impervious or pervious surfaces to derive the stormwater bill for each property. What is the difference between permeable and impermeable surfaces? Decks or porches constructed above the surface of the lot that are erected on pier foundations, and that maintain a permeable surface underneath that can facilitate the infiltration of water into the soil. translation and definition "pervious rock", Dictionary English-English online. Impervious area Hyd A surface or area within a drainage catchment that significantly restricts the infiltration of water, even though some minor infiltration may occur through minor pores and cracks, e.g. Impervious surfaces … A life span equal to or greater than standard asphalt. See more. The joints must be kept open by spacers placed when laying the units or be part of the paver unit construction. We'll calculate the area of impervious surface per parcel and symbolize the parcels accordingly. Pervious surface regulations are intended to provide a minimum required amount of pervious area and limit the amount of impervious surface on a lot. Permeable pavement (also known as pervious or porous concrete) is a specific type of pavement with a high porosity that allows rainwater to pass through it into the ground below. The water can be temporarily stored before infiltration to the ground, reused, or discharged to a watercourse or other drainage system. 2. Permeable surfaces (also known as porous or pervious surfaces) allow water to percolate into the soil to filter out pollutants and recharge the water table. Pervious surfaces include grass, mulched groundcover, planted areas, vegetated roofs, permeable paving as well as porches and decks erected on pier foundations that maintain the covered lot surface’s water permeability. means the conversion of a native vegetated surface or other native surface to a nonnative pervious surface, including, but not limited to, pasture land, grassland, cultivated land, lawn, landscaping or bare soil or any alteration of existing nonnative pervious surface that results in increased stormwater runoff as defined in the Surface Water Design Manual. Examples include lawn, landscape, pasture, and native vegetation areas. Note for purposes of threshold determination and runoff volume modeling for detention and treatment in the SWDM, vegetated roofs and permeable pavements are to be considered impervious surfaces along with lawns, landscaping, sports … A pervious surface is a surface that allows the percolation of water into the underlying soil. Il est généralement placé après le nom et s'accorde avec le nom (ex : un ballon bleu, une balle bleue). Example sentences with "pervious rock", translation memory. They are, however, not the same. 2. 1 : accessible pervious to reason. pervious to water . Vernon Square, Mount Vernon Triangle Principle Intersection Area, Public Education, Recreation or Library Buildings or Structures, Entertainment, Assembly, and Performing Arts. Grass, mulched groundcover, all areas of a vegetated roof planted with a growing medium, and other planted areas; Permeable or pervious pavers or paving that facilitate the infiltration of water into the soil; and. A temporary sediment control barrier formed around, in, or on a storm drain inlet in pervious areas. ‘A typical cubic yard of pervious concrete would have 2650 pounds of #89 gravel, 600 pounds of portland cement, and a water-cement ratio of about 0.30.’ ‘The use of impervious surfaces (like pavement and concrete) can be minimized and replaced with pervious surfaces (like … pervious: See: amenable , disposable , open , passable , penetrable , pliable , suasible capable of being passed into or through. Giga-fren. Impervious surfaces are mainly artificial structures—such as pavements (roads, sidewalks, driveways and parking lots, as well as industrial areas such as airports, ports and logistics and distribution centres, all of which use considerable paved areas) that are covered by water-resistant materials such as asphalt, concrete, brick, stone—and rooftops. Roofing and other building materials are also classically impervious. patents-wipo. In harder, jointed (and therefore pervious) rocks, landslips are rarer. Permeable vs. Impermeable Surfaces . 2 : permeable pervious soil. Pervious surfaces include grass, mulched groundcover, planted areas, vegetated roofs, permeable paving as well as porches and decks erected on pier foundations that maintain the covered lot surface’s water permeability. Soil is a natural filter. The definition of impervious surface, as defined in King County Code 9.04.020(P) reads in part "a hard surface area which either prevents or retards the entry of water into the soil mantle as under natural conditions prior to development, and/or a hard 3. the initial ‘wetting’ of concrete surfaces. Other Words from pervious Synonyms & Antonyms More Example Sentences Learn More about pervious. WikiMatrix . Paver stones can be replaced in sections on an as-needed basis, extending t… Pervious surface coverings if installed correctly and properly maintained duplicate the structural and functional features of traditional pavement. Local Examples of pervious pavement and pavers (images link to videos) Energy Plus Hermanton, MN. Open to passage or entrance; permeable. A classic example of an impervious surface is paving, utilized to make roads and parking lots all over the world. translation and definition "pervious to water", Dictionary English-English online. University MN-Duluth. patents-wipo. An impervious surface is a surface which cannot be penetrated by water. Bleu, une balle bleue ) certain they ’ re using need to clarify with your contractor to certain... Watercourse or other drainage system sentences with `` pervious rock '', translation memory functional features traditional!, you might need to clarify with your contractor to be certain ’. 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Your property value permeable: pervious soil by professionals without regard to their unique characteristics part of the types. Admitting of passage or entrance ; permeable: pervious soil maintained duplicate the and. Existing lot occupancy at the time of building permit application by 25 % or More into is...

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