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The road surfaces in service lanes are usually made of concrete or concrete blocks. They have poor draining property and ponding is ubiquitous to see after raining. The stagnant water may lead to health and hygienic problems which render the lanes unapproachable to citizens. In a green lane, the surface will be re-paved with permeable concrete or porous asphalt through which water is allowed to penetrate the soil. Then, the water can recharge the underground water table instead of accumulating on road surface or as polluted runoff in rivers. Recycled materials like glass and light-coloured pavement will be used to reflect heat so as to keep cool on hot days and reduce urban heat effect.
Greening - Permeable Paving
Ways of Operation
The re-paving works and regular maintenance will be carried out by the Highways Department. Suitable material and design will be adopted to ensure the road surface of certain service lanes which act as EVA can support for its use.
Comparable
Chicago's Green Alley Initiative
Chicago has retrofitted alleys with environmentally sustainable road-building materials. Over one hundred alleys are completed.
Involved Departments
Highways Department
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Responsible for maintaining the integrity of the road network with particular emphasis on safety and serviceability, and implement local road infrastructure works to facilitate and cope with the public and private sector developments
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To provide technical support and set standards for the construction and maintenance of the road network
For further information:
Drainge Services Department
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Responsible for the underground drainage system
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To advise on the underground pipe arrangement and precautions that should be taken for re-paving
For further information:
Electrical and Mechanical Services Department
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To advise on the underground arrangement and precautions that should be taken for re-paving
For further information:
Fire Services Department
For further information:
