8,254
edits
Changes
Jump to navigation
Jump to search
Line 1:
Line 1: − <table table class = wikitable>+ − <tr><th colspan =2>Erosion and Sediment Control</th></tr>+ − <tr><td width = "5%"></td><td>Bioretention locations should be blocked from construction traffic and should not be used for erosion and sediment control</td></tr>+ − <tr><td></td><td>Proper erosion and sediment controls should be in place for the drainage area</td></tr>+ − <tr><th colspan =2>Materials</th></tr>+ − <tr><td width = "5%"></td><td>Gravel for the underdrain should be clean and washed; no fines should be present in the material</td></tr>+ − <tr><td></td><td>Underdrain pipe material should be perforated and of the correct size</td></tr>+ − <tr><td></td><td>A cap should be placed on the upstream (but not the downstream) end of the underdrain</td></tr>+ − <tr><td></td><td>Biomedia should be tested to confirm that it meets specifications</td></tr>+ − <tr><td></td><td>Mulch composition should be correct</td></tr>+ − <tr><th colspan =2>Elevations</th></tr>+ − <tr><td width = "5%"></td><td>Depth of the gravel and invert of the underdrain</td></tr>+ − <tr><td></td><td>Inverts for inflow and outflow points</td></tr>+ − <tr><td></td><td><strong>Filter depth?</strong> after biomedia is placed</td></tr>+ − <tr><td></td><td>Ponding depth provided between the surface of the filter bed and the overflow structure</td></tr> + − <tr><td></td><td>Mulch depth</td></tr> + − <tr><th colspan =2>Landscaping and Stabilization</th></tr>+ − <tr><td width = "5%"></td><td>Correct vegetation should be planted</td></tr>+ − <tr><td></td><td>Pretreatment area should be stabilized</td></tr>+ − <tr><td></td><td>Drainage area should be stabilized prior to directing water to the bioretention</td></tr>+ − <tr><th colspan =2>The following items should be checked after the first rainfall event, and adjustments should be made as necessary:</th></tr>+ − <tr><td width = "5%"></td><td>Outfall protection/energy dissipation at concentrated inflow should be stable</td></tr>+ − <tr><td></td><td>Flow should not concentrate and should spread evenly over the filter bed</td></tr>+ − <tr><td></td><td>Ponded water at the surface of the bioretenton facility must drain within 24 hours of the end of the storm event. The filter media bed should fully drain within a maximum period of 72 hours</td></tr>+ − <tr><td></td><td>Excessive sediment accumulation should not be present</td></tr>+ − </table>+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Bioretention: Construction checklist (view source)
Revision as of 20:08, 4 September 2017
, 8 years agono edit summary
Common construction pitfalls can be avoided with careful construction supervision that focuses on the following aspects:
Common construction pitfalls can be avoided with careful construction supervision that focuses on the following aspects:
{| class="wikitable"
|-
!colspan =2|Erosion and Sediment Control
|-
|style="width:30px"|
|Bioretention locations should be blocked from construction traffic and should not be used for erosion and sediment control
|-
||
|Proper erosion and sediment controls should be in place for the drainage area
|-
!colspan =2|Materials
|-
|style="width:30px"|
|Gravel for the underdrain should be clean and washed; no fines should be present in the material
|-
||
|Underdrain pipe material should be perforated and of the correct size (when specified in design)
|-
||
|A cap should be placed on the upstream (but not the downstream) end of the underdrain (when specified in design)
|-
||
|Biomedia should be tested to confirm that it meets specifications
|-
||
|Mulch composition should be correct
|-
!colspan =2|Elevations
|-
|style="width:30px"|
|Depth of the gravel and invert of the underdrain
|-
||
|Inverts for inflow and outflow points
|-
||
|Filter media depth
|-
||
|Ponding depth provided between the surface of the filter bed and the overflow structure
|-
||
|Mulch depth
|-
!colspan =2|Landscaping and Stabilization
|-
|style="width:30px"|
|Correct vegetation should be planted
|-
||
|Pretreatment area should be stabilized
|-
||
|Drainage area should be stabilized prior to directing water to the bioretention
|-
!colspan =2|The following items should be checked after the first rainfall event, and adjustments should be made as necessary:
|-
|style="width:30px"|
|Outfall protection/energy dissipation at concentrated inflow should be stable
|-
||
|Flow should not concentrate and should spread evenly over the filter bed
|-
||
|Ponded water at the surface of the bioretenton facility must drain within 24 hours of the end of the storm event. <br> The biomedia should fully drain within a maximum period of 72 hours
|-
||
|Excessive sediment accumulation should not be present
|}
[[category:Checklists]]
[[category:Construction]]