Code of practice on surface water drainage


Integration of ABC Waters Design Features within Developments



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COP Surface Water Drainage 7th Ed Add. 1
8.2
Integration of ABC Waters Design Features within Developments
8.2.1 Qualified Persons together with the developer/owner are strongly encouraged to enhance the development by adopting appropriate ABC Waters design features as described in the latest version of ABC Waters Design Guidelines and Engineering Procedures for ABC Waters design features published by the Board (available at https://www.pub.gov.sg/abcwaters/designguidelines). These guidelines were developed based on the following principles a) Reduction of runoff and peak flow from the development site by implementing local ABC
Waters design features that provide detention measures and minimise impervious areas b) Improvement of quality of water draining from the development into receiving environment. For example, through effective filtration and retention measures via ABC Waters design features, runoff from the site can be treated to remove pollutants and silt, thereby protecting the water quality in waterways downstream c) Integration of stormwater treatment into the landscape by incorporating multiple- use ABC Waters design features that also maximise the aesthetics and recreational amenities of developments and d) Protection and enhancement of natural water systems within the development site.


33 8.2.2 The developer owner shall engage an ABC Waters (Active, Beautiful, Clean Waters) Professional to design, oversee the construction of, and develop a maintenance plan for the ABC Waters design features. The developer/owner shall submit the concept design and design calculations, endorsed by the ABC Waters Professional, to the Board as part of DC submission. Hydraulic calculations associated with the ABC Waters design features, endorsed by an ABC Waters Professional who is a PE (Civil, shall be submitted at DC stage. If there is any change to the catchment or design of the ABC Waters design features subsequent to DC approval, QP shall submit the updated design and hydraulic calculations associated with the ABC Waters design features, duly endorsed by an ABC Waters Professional who is a PE (Civil.
8.2.3 For ABC Waters design features that are designed to be part of the measures to comply with Clause 7.1.5, the developer/owner shall maintain the ABC Waters design features regularly to ensure that these features are well maintained and remain effective in serving the functions as stipulated in Clause 7.1.5.

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