Difference between revisions of "Construction: curbing"
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[[File:20150618 114542.jpg|thumb|350px|right|Improper elevation at the curb cut, impeding the inflow to enter the LID facility (bioretention) (Photo source: CVC, 2015)]] | |||
"'INSERT VIDEO FROM HAGGERT AVE: \\Hqcvcfs01\cvc2\Watershed Management\Integrated Water Management Implementation\Fletchers Creek SNAP\Haggert Ave Road Retrofit\3 - Photos\Construction Photos\Site Visit_20201120\Riverstone Construction Haggert Ave Inlet_F.mp4'' | "'INSERT VIDEO FROM HAGGERT AVE: \\Hqcvcfs01\cvc2\Watershed Management\Integrated Water Management Implementation\Fletchers Creek SNAP\Haggert Ave Road Retrofit\3 - Photos\Construction Photos\Site Visit_20201120\Riverstone Construction Haggert Ave Inlet_F.mp4'' | ||
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#Shape the inlet | #Shape the inlet | ||
#Add the river stone on top of the fresh concrete (if applicable) | #Add the river stone on top of the fresh concrete (if applicable) | ||
#Provide sufficient curing time, according to CSA standard A23.1-09. | #Provide sufficient curing time, according to ([https://www.csagroup.org/store/product/2420232/#:~:text=and%20specialty%20concretes.-,A23.,A%20sister%20standard%20%E2%80%93%20CSA%20A23 CSA, 2009])<ref> CSA. 2009. A23.1-09/A23.2-09 (R2014). Concrete materials and methods of concrete construction/Test methods and standard practices for concrete. standard A23.1-09. https://www.csagroup.org/store/product/2420232/#:~:text=and%20specialty%20concretes.-,A23.,A%20sister%20standard%20%E2%80%93%20CSA%20A23 </ref> | ||
[[File:P1160129.JPG|thumb|400px|right|Ensure curb granular base (granular A) does not spill over into LID infiltration area. If material spills over, remove as best as possible while still maintaining the 2:1 slope for curbing. (Photo source: CVC, 2012)]] | |||
'''Key Inspection Points:''' | '''Key Inspection Points:''' | ||
*Use of proper curb form by sub-contractor. | *Use of proper curb form by sub-contractor. | ||
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*Designated concrete wash out is in place and away from LID facility. | *Designated concrete wash out is in place and away from LID facility. | ||
'''Mistakes to Avoid:<br>''' | '''Mistakes to Avoid:<br>''' | ||
*Elevated curb cuts and reverse slopes (sloping from back of curb towards instead of depressing from gutter line towards the back). | *Elevated curb cuts and reverse slopes (sloping from back of curb towards instead of depressing from gutter line towards the back). | ||
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*Use of wrong curb form. | *Use of wrong curb form. | ||
*Concrete wash out within or upstream of LID facility. | *Concrete wash out within or upstream of LID facility. | ||
*Ensure curb granular base (granular A) does spill over into LID infiltration area. If material spills over, remove as best as possible while still maintaining the 2:1 slope for curbing | *Ensure curb granular base (granular A) does not spill over into LID infiltration area. If material spills over, remove as best as possible while still maintaining the 2:1 slope for curbing | ||
*Lack of communication to concrete contractor or ready-mix driver explaining the function and importance of protecting the LID feature. | *Lack of communication to concrete contractor or ready-mix driver explaining the function and importance of protecting the LID feature. | ||
For more information on curb cuts, see these pages: [[Curb cuts]], [[Curb cuts: Gallery]] and [[Bioretention: Streetscapes]]<br> | For more information on curb cuts, see these pages: [[Curb cuts]], [[Curb cuts: Gallery]] and [[Bioretention: Streetscapes]]<br> | ||
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Latest revision as of 22:12, 22 September 2022
"'INSERT VIDEO FROM HAGGERT AVE: \\Hqcvcfs01\cvc2\Watershed Management\Integrated Water Management Implementation\Fletchers Creek SNAP\Haggert Ave Road Retrofit\3 - Photos\Construction Photos\Site Visit_20201120\Riverstone Construction Haggert Ave Inlet_F.mp4
It is very important to make sure that the contractor responsible for curb construction understands curb cut designs and elevations. This is often a new technique for contractors, and they may not understand the overall concept of water in the gutter line being directed behind the gutter.
Construction Steps:
- Place the right forms (rolled curve vs standard) in the inlet location.
- Pour concrete.
- Shape the inlet
- Add the river stone on top of the fresh concrete (if applicable)
- Provide sufficient curing time, according to (CSA, 2009)[1]
Key Inspection Points:
- Use of proper curb form by sub-contractor.
- Curb type aligns with design.
- Curb cut location, type and dimension aligns with design.
- Designated concrete wash out is in place and away from LID facility.
Mistakes to Avoid:
- Elevated curb cuts and reverse slopes (sloping from back of curb towards instead of depressing from gutter line towards the back).
- Wrong curb cut width size.
- Use of wrong curb form.
- Concrete wash out within or upstream of LID facility.
- Ensure curb granular base (granular A) does not spill over into LID infiltration area. If material spills over, remove as best as possible while still maintaining the 2:1 slope for curbing
- Lack of communication to concrete contractor or ready-mix driver explaining the function and importance of protecting the LID feature.
For more information on curb cuts, see these pages: Curb cuts, Curb cuts: Gallery and Bioretention: Streetscapes
- ↑ CSA. 2009. A23.1-09/A23.2-09 (R2014). Concrete materials and methods of concrete construction/Test methods and standard practices for concrete. standard A23.1-09. https://www.csagroup.org/store/product/2420232/#:~:text=and%20specialty%20concretes.-,A23.,A%20sister%20standard%20%E2%80%93%20CSA%20A23