Changes

==Overview==

==Overview==

[[Permeable pavement|Permeable Pavers]] are an alternative to traditional impervious pavements that allow stormwater to drain through them and into a storage reservoir below. Depending on the native soil properties and site constraints, the system may be designed for full infiltration, partial infiltration, or as a non-infiltrating detention and filtration only practice. They can be used for low traffic roads, parking, driveways, and walk ways, and are ideal where space for other surface BMPs is limited. Permeable pavement types include:

[[Permeable pavement|Permeable Pavers]] are an alternative to traditional impervious pavements that allow stormwater to drain through them and into a storage reservoir aggregate layer below. Depending on the native soil properties and site constraints, the system may be designed for full infiltration, partial infiltration, or as a non-infiltrating detention and filtration only practice. They can be used for low traffic roads, parking, driveways, and walk ways, and are ideal where space for other surface BMPs is limited. Permeable pavement types include:

*permeable interlocking pavers (concrete or composite materials)

*permeable interlocking pavers (concrete or composite materials)

*grid systems (concrete or composite materials)

*grid systems (concrete or composite materials)

<small>'''Note:''' Please click on each image to enlarge to view associated life cycle cost results.</small><br>

<small>'''Note:''' Click on each image to enlarge to view associated life cycle cost results.</small><br>

===50-Year life cycle cost break down===

===50-Year life cycle cost break down===

<small>'''Note:''' Please click on each image to enlarge to view associated life cycle cost results.</small><br>

<small>'''Note:''' Click on each image to enlarge to view associated life cycle cost results.</small><br>

==Cost Summary Table ==

==Cost Summary Tables==

Total life cycle cost estimates for the three permeable pavement configurations vary substantially with the No Infiltration design being highest ($187,356.33), compared to the Partial Infiltration design ($168,085.10), and followed closely by the Full Infiltration design ($162,491.78).

Total life cycle cost estimates over the 50 year evaluation period for the three permeable pavement configurations vary substantially with the No Infiltration design being highest ($262,294.27), compared to the Partial Infiltration design ($242,444.90), and followed closely by the Full Infiltration design ($234,854.66).

It is notable that a sensitivity analysis was conducted in 2019 to compare construction cost estimates generated by the tool to actual costs of implemented projects. '''The analysis found that tool estimates were typically within ±14% of actual construction costs'''<ref>Credit Vally Conservation (CVC). 2019. Life-cycle costing tool 2019 update: sensitivity analysis. Credit Valley Conservation, Mississauga, Ontario. https://sustainabletechnologies.ca/app/uploads/2020/04/LCCT-Sensitivity-Analysis_March2020.pdf</ref>.

It is notable that a sensitivity analysis was conducted in 2019 to compare construction cost estimates generated by the tool to actual costs of implemented projects. '''The analysis found that tool estimates were typically within ±14% of actual construction costs'''<ref>Credit Vally Conservation (CVC). 2019. Life-cycle costing tool 2019 update: sensitivity analysis. Credit Valley Conservation, Mississauga, Ontario. https://sustainabletechnologies.ca/app/uploads/2020/04/LCCT-Sensitivity-Analysis_March2020.pdf</ref>.

[[File:PICPchicago.jpg|thumb|500px||Permeable Interlocking Concrete Pavement (PICP) on a narrow road between buildings in Chicago (Source: ICPI)]]

[[File:PICPchicago.jpg|thumb|500px||Permeable Interlocking Concrete Pavement (PICP) on a narrow road between buildings in Chicago (Source: ICPI)]]

[[File:Design Table PP Full Infil.PNG|700px]]<br>

[[File:Design Table PP Full Infil Update 2023.PNG|700px]]<br>

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===Partial Infiltration===

===Partial Infiltration===

[[File:Design Table PP Partial Infil.PNG|700px]]<br>

[[File:Design Table PP Partial Infil update 2023.PNG|700px]]<br>

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===Non-Infiltrating/filtration only===

===Non-Infiltrating/filtration only===

[[File:Design Table PP No Infil.PNG|700px]]<br>

[[File:Design Table PP No Infil update 2023.PNG|700px]]<br>

==References==

==References==