Backfill at Back of Concrete Walks or Paved Lanes
To reduce water infiltration into the granular base of concrete walks and paved lanes, non-granular backfill must be placed to the top (surface) of the concrete or asphalt. This will enhance the long term performance of the walk or lane by minimizing water infiltration through the granular base.
The following diagrams and pictures illustrate the typical clay cap with sidewalk (for reference only):
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Clay Cap is Graded at Rough Grade Stage to Meet the Requirement for Interim Pooling Behind the Public Sidewalk/Curb -
Typical Clay Cap with Sidewalk at Rough Grade Design Diagram -
Backfill at Rough Grade Stage -
Typical Clay Cap with Sidewalk at Final Grade Design Diagram -
Backfill at Final Grade Stage
For More Information
Drainage Planning and Engineering
5th Floor, Century Place
9803 - 102A Avenue NW
Edmonton, AB
T5J 3A3
| Telephone | 311 or 780-496-5576 |
|---|---|
| Fax | 780-496-2865 |
| lot.grading@edmonton.ca |
