e TecK is in the process of upgrading and maintaining the existing civil infrastructure within its Industrial Estates. Accordingly, e TecK’s O’Meara Industrial Estate had several works executed including cold milling, strengthening of the existing roadway, the full reconstruction of kerb and slipper drains and new swale drains.
Four hundred and ninety-two metres (482 m) of road was resurfaced inclusive of strengthening compromised sections of the roadway and the demolition and reconstruction five hundred metres (500m) of drain.
David Blake street is situated within the O’meara Industrial Estate and is subjected to heavy vehicular traffic. Ravelling of the weathered asphalt pavement was observed for approximately eighty percent of the roadway (80 %). Due to the age of the asphalt the roadway was milled and paved to prevent water from percolating through the aged asphalt into the foundation of the roadway and to improve the ride-ability of the roadway.
The design of the existing kerb and slipper drains made it difficult for tenants to access their properties and as a result several tenants constructed concrete ramps within the existing kerb and slipper drain to access their properties, which impeded the flow of water along the kerb and slipper drain. A topographical survey of the site also showed that the profile of the existing kerb & slipper drain was undulated along some sections of the road way.
Several sections along the roadway had been compromised due to surface runoff flowing along the street as opposed to flowing within the drain. These sections were strengthened using selected granular base course material and geogrid in the vicinity of the Furniture Plus Warehouse. Flooding was observed north of the intersection between David Blake Street and Yorke Avenue due to a compromised catch-pit along Yorke Avenue.
To mitigate the flooding along Yorke Avenue, a swale drain was constructed across David Blake Street to reduce the amount of water that flows into the compromised catch-pit. To reduce flooding along David Blake Street, the existing kerb & slipper drain was reconstructed to eliminate the use of concrete ramps by constructing swale in the vicinity of driveways and the elevation of the roadway was raised at specific locations to eliminate ponding along the roadway.
Here are some of the before and after photos:
