- Concrete Erosion Mats were applied to swale drains along the edges of a newly constructed road and bridge.
- Brookland Bridge Kagaru Project, Scenic Rim Regional Council, BEAUDESERT QLD 4285
- 1050 square metres
- Laid over 2 days
- 1 TD Loader with bucket
- 1 operator and 3 labours on the ground to assist positioning the mat into place
OUR REF: ACM 0104
Swale drains were required at the new bridge construction and the upgrade of an existing road for Scenic Rim Regional Council in SEQ. Concrete mats were perfect solution to slow and control the flow of water to prevent flooding, puddling, and erosion and/or avoid overwhelming the storm drain system.
Swale drains were lined with Australian Concrete Mats to solve the problem of the roadside not having curbs or guttering, which would result in sediment blocking downstream drains. Swales are designed to slow and capture runoff by spreading it horizontally across the landscape (along an elevation contour line), facilitating runoff infiltration into the soil.The drains were designed to be broad and shallow, and would be vegetated with grass that would grow through the mats.
By choosing the flexible concrete erosion mat the swale drain would protect the ground from erosion and be easily maintained and mowed when the vegetation had grown.
- The edges of the road were prepared and shaped to direct the drainage towards the sides of the bridge and into the naturally flowing creek.
- Concrete Erosion rolls placed into position alongside of the bank sides in preparation to unroll into place
- The loader then unrolled the mats from the bottom side of the drain up and alaong the road edges.
- The flexible nature of the mats ensured that they easily contoured to the curves of the drain.
- Mats were supplied in 2.4m widths and 6m long rolls. They easily unrolled directly into position.
- The bucket of the loader simply pulled them when they needed straightening.
- Once the mat was in position the next one was overlapped upstream, and so on as they went up the slope
- The joins were secured with 450 mm U-Anchors that were spaced every 900 mm into position.
- The mats were laid with nutrition geomat underlay materials to support the growth of grass in the drain for the future.
- End results would be much easier to maintain and reduced sediment loss through the drain outlet.
RESULTS & BENEFITS:
- Reduce the velocity of the water when it flowed off the road and towards the creek.
- Encourage vegetation growth into the future to allow for the council to maintain the drains.
- Reduce sediment loss. Manage drain opening and access.
- Very efficient with time and resources.
- This project was over 1050sqm work-site.
- The works were completed swiftly, with minimal labour and effort
- Once laid the mats start working straight away.
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