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2018 - 2019 Sustainable Drainage Design and Construction for “The
Angsana” Development, Teluk Bahang, Pulau Pinang, Malaysia

Enviro Pro was appointed to provide consultancy services for the Concept Design of a Bio-engineered drain and we are presently involved in the detailed engineering design and construction. The main design concept includes the re-naturalization of the main drain by making full use of the existing drainage and 6m wide drainage reserve (60m x 9m). The drainage reserve will be able to cleanse the main drain water and act as a velocity reducing feature to protect beach areas.

The Bio-drain replaces a conventional concrete U-drain, and is designed to reduce the velocity of the effluent and improve the quality of the water in the main-drain before it is discharged into the sea. Using innovative bio-engineering techniques for slope stabilisation such as gabions and rock-rolls, these help to enhance the aesthetic value of the Bio-drain.

Key Design Concept

Bio-engineered Slope – provides conveyance and retention function. It also provide vertical filtration system at low rate as water percolates down within its filter media. It is also suitable for intercepting and treating runoff.

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