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{{:Curb cuts: Gallery}}
For more information on curb cuts, see these pages: [[Curb cuts]] and [[Bioretention: Streetscapes]]<br>
'''Pre-treatment and Inlet'''<br> Pre-treatment structures are most cost effective when they slow down incoming flows, collect sediment for easy clean out, and release water to the bioretention facility in a non-erosive way. Some pre-treatment structures/strategies include:
* Vegetation: If sized correctly, it works more effectively in areas with more dispersed flow. However, in concentrated flow and sediment areas it might not be the best option. Sediment removal can be more difficult in areas of dense vegetation. An advantage of using vegetation as pre-treatment is that it can be easily integrated into the landscape design. * Concrete curbing
→Backfill Granular and Pipes (SPC)
*Placement of curb cuts on steep slopes or the down slope side of a catchbasin<br>
*Placement of curb cuts on steep slopes or the down slope side of a catchbasin<br>
For more information on curb cuts, see these pages: [[Curb cuts]], [[Curb cuts: Gallery]] and [[Bioretention: Streetscapes]]<br>
'''Pre-treatment and Inlet'''<br>
Pre-treatment structures are most cost effective when they slow down incoming flows, collect sediment for easy clean out, and slowly release water to the bioretention facility mitigating erosion. Pre-treatment structures/strategies can include [[curb cuts]], [[Aggregates]], proprietary devices like filters or hydrodynamic separators, vegetation, concrete sumps and etc.
Construction Steps:<br>
Installation of pre-treatment features will vary based upon type. Similarly, installation timeline will range with type and could occur at excavation and mass grading, curb work or at finishing grade. Given pre-treatment features are typically integrated with the LID inlet coordination amongst multiple sub-contractors is sometime needed. The following details steps for various pre-treatment types:
*Vegetation: Follow the guidance shown below in the section “Plant Material Verification and Installation”
*Curbing: Follow the guidance shown above in the section “Curbing”.
*Aggregate: Follow the guidance shown above in the section “Stone reservoir”.
*Proprietary pre-treatment device:
#Excavate and prepare base for proprietary pre-treatment device according to design.
#Install proprietary pre-treatment device according manufacturer directions.
#Manufacturer representative may need to confirm proper installation and functioning through approved testing and inspection.
Construction steps:
Construction steps: