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Sahlla Abbasi moved page Permeable paving: TTT to Permeable pavements: TTT: Updating terminology for permeable paving to permeable pavements
{{Clickable button|[[File:TTT.png|350 px|link=http://www.sustainabletechnologies.ca/wp/low-impact-development-treatment-train-tool/]]}}
{{Clickable button|[[File:TTT.png|350 px|link=http://www.sustainabletechnologies.ca/wp/low-impact-development-treatment-train-tool/]]}}
[[File:LID TTT.png|thumb|[[Permeable paving]] is found within the LID toolbox]]
[[File:LID TTT.png|thumb|[[Permeable pavements]] is found within the LID toolbox]]
{| class="wikitable"
{| class="wikitable"
|-
|-
|width = 210px|[[Berm]] height (mm)||This is the height of the curb which constrains the overland sheet flow of water. Where [[curb cuts]] or other outlet exists at the lowest point of the pavement, the suggested value is 0.
|width = 210px|[[Berm]] height (mm)||This is the height of the curb which constrains the overland sheet flow of water. Where [[curb cuts]] or other outlet exists at the lowest point of the pavement, the suggested value is 0.
|-
|-
|Surface roughness (Manning’s n)||Lower numbers indicate less surface obstruction and result in faster flow.
|Surface roughness ([[Manning’s n]])||Lower numbers indicate less surface obstruction and result in faster flow.
Suggested range for pavement 0.01 – 0.02 <ref name = SWMM> Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Environmental Protection Agency, Cincinnati ONRMRL. Storm Water Management Model Reference Manual Volume I Hydrology (Revised). 2016:233. https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100NYRA.txt Accessed August 23, 2017.</ref>
Suggested range for pavement 0.01 – 0.02 <ref name = SWMM> Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Environmental Protection Agency, Cincinnati ONRMRL. Storm Water Management Model Reference Manual Volume I Hydrology (Revised). 2016:233. https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100NYRA.txt Accessed August 23, 2017.</ref>
|-
|-
|Thickness (mm)||Depth of all aggregate bases
|Thickness (mm)||Depth of all aggregate bases
|-
|-
|Void ratio||Suggest range 0.35 – 0.4 unless otherwise tested
|Void ratio||Suggested value 0.4 unless otherwise tested
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|-
|Seepage rate (mm/hr)||Infiltration rate of native soil
|Seepage rate (mm/hr)||Infiltration rate of native soil
|Flow exponent||Suggested value 1
|Flow exponent||Suggested value 1
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|-
|Offset height||This is the height from the base of the cell to the height at which the drain discharges. In some designs this may be the height of the perforated pipe within the storage layer. In other designs this height is adjusted by creating an upturn in the discharge pipe. [[Permeable paving]]
|Offset height||This is the height from the base of the cell to the height at which the drain discharges. In some designs this may be the height of the perforated pipe within the storage layer. In other designs this height is adjusted by creating an upturn in the discharge pipe. [[Permeable pavements]]
|}
|}
''<references/>''
''<references/>''
[[category: modeling]]
[[category: modeling]]