Code of practice on surface water drainage


PLATFORM, CREST AND RECLAMATION LEVELS



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COP Surface Water Drainage 7th Ed Add. 1
2
PLATFORM, CREST AND RECLAMATION LEVELS
2.1
Minimum Platform Level
The minimum platform level of a development site as specified by the Board is the required minimum ground level of that proposed development. The platform levels shall be indicated on the layout plans.

The minimum platform level required fora proposed development depends on its locality and the type of development, as categorised below
2.1.1
Type of Development
(a)
General Developments
The minimum platform level shall not be lower than i) m above Singapore Height Datum for developments along the southern coast and m above Singapore Height Datum for developments along the northern coast or ii)
300 mm above the adjacent road/ground level or iii) Any other level as maybe specified by the Board whichever is the highest.
(b)
Industrial/ Institutional/Commercial/Multi-Unit Residential Developments
The minimum platform level shall not be lower than i) m above Singapore Height Datum for developments along the southern coast and m above Singapore Height Datum for developments along the northern coast or ii)
600 mm above the adjacent road/ground level or iii) Any other level as maybe specified by the Board whichever is the highest.


7
(c)
Special Facilities and Developments with Director Indirect Linkages to Underground Special Facilities The minimum platform level shall not be lower than i) m above Singapore Height Datum for developments along the southern coast and m above Singapore Height Datum for developments along the northern coast or ii)
1 m above the adjacent road/ground level or iii) Any other level as maybe specified by the Board whichever is the highest.

2.1.2
Exception Cases

If, subject to approval of the Board, the minimum platform levels as specified in Clause
2.1.1 cannot be met, the following conditions (a) and (b) must be meta) The platform level of the building structure must beat least i)
3.5 m above Singapore Height Datum for developments along the southern coast and
4.0 m above Singapore Height Datum for developments along the northern coast or whichever is higher
and; b) Flood protection measures must be included in the design to provide at least the same level of flood protection that the minimum platform and/or crest levels would provide for the building. Details of proposed flood protection measures should be submitted to the Board for approval. Implementation of the flood protection measures shall comply with the requirements stipulated in Clause 2.4. Notwithstanding the above, the Qualified Person shall advise the developer/owner to raise the platform level and/or crest level to the highest possible levels before considering the deployment of flood protection measures. In addition, the developer/owner shall be advised that the development site maybe subjected to flood risks despite the implementation of flood protection measures.

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