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| <poem> | | <poem> |
| Curb cuts are a form of LID/BMP [[Inlets|inlet]]. | | Curb cuts are a form of LID/BMP [[Inlets|inlet]]. They include a variety of modified curbs and spillways. |
| They are well suited to retrofit scenarios and to collect runoff from catchments with relatively gentle longitudinal slope, and/or a greater cross slope. This might be the local topography of a parking lot or a piece of parkland? | | They are well suited to retrofit scenarios and to collect runoff from catchments with relatively gentle longitudinal slope, and/or a greater cross slope. This might be the local topography of a parking lot or a piece of parkland? |
| As this inlet width is directly proportional to longitudinal slope; the required curb cut width increases rapidly on steeper roads. | | As this inlet width is directly proportional to longitudinal slope; the required curb cut width increases rapidly on steeper roads. |
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| !From asphalt catchment | | !From asphalt catchment |
| !From concrete catchment | | !From concrete catchment |
| | !From either asphalt or concrete catchment |
| |- | | |- |
| |30 - 45 deg | | |30 - 45 deg |
| |605.020 <ref name =OPSD>http://www.roadauthority.com/Standards/?id=b00e3771-6095-4257-b029-1d9879418039</ref> | | |605.020 <ref name =OPSD>http://www.roadauthority.com/Standards/?id=b00e3771-6095-4257-b029-1d9879418039</ref> |
| |605.010 <ref name =OPSD/> | | |605.010 <ref name =OPSD/> |
| | |605.040 Asphalt Spillways <ref name =OPSD/> |
| |- | | |- |
| |90 deg | | |90 deg |
| |604.020 <ref name =OPSD/> | | |604.020 <ref name =OPSD/> |
| |604.010 <ref name =OPSD/> | | |604.010 <ref name =OPSD/> |
| | |605.040 Asphalt Spillways <ref name =OPSD/> |
| |} | | |} |
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| ==Sizing== | | ==Sizing== |
| <div style="float: right">
| | To completely capture linear flow travelling along a gutter perpendicular to a curb inlet, the inlet must be of width<ref>U.S. Department of Transportation, Federal Highways Administration. 2013. “URBAN DRAINAGE DESIGN MANUAL.” https://www.fhwa.dot.gov/engineering/hydraulics/pubs/10009/10009.pdf.[[File:USFHWA 2009.pdf|view here]]</ref>:: |
| {{#widget:WolframAlpha|id=664012476f5d9635d57cd58920e763e6}}</div>
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| To completely capture linear flow travelling along a gutter perpendicular to a curb inlet, the inlet must be of width<ref>Chin (2102), Water-Resources Engineering (3rd Edition), ISBN-13: 978-0132833219</ref>:: | |
| <math>W_T=0.817Q^{0.42}S_{0}^{0.3}\left (\frac{1}{nS_{x}}\right)^{0.6}</math> | | <math>W_T=0.817Q^{0.42}S_{0}^{0.3}\left (\frac{1}{nS_{x}}\right)^{0.6}</math> |
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| {{:Curb cuts: Gallery}} | | {{:Curb cuts: Gallery}} |
| ---- | | ---- |
| [[category: modeling]] | | [[category: Calculations]] |