Code of practice on surface water drainage

8 2.1.3
Compliance with Minimum Platform Levels
(a) All new development proposals including reconstruction proposals shall comply with the requirements for minimum platform levels except those listed in Clause b. b) The following proposals need not comply with the required minimum platform levels i) Addition & alteration (AA) works to an existing building where there are no direct and/or indirect linkages to underground special facilities ii) Partial reconstruction works to an existing building involving only the building of additional floors without reconstruction of the first storey and where there are no direct and/or indirect linkages to underground special facilities iii) Conservation projects iv) Temporary development works intended for use fora temporary period v) Any other works as maybe specified by the Board. For these development proposals, the Qualified Person shall advise the developer owner that the minimum platform levels are still recommended as a protection measure to reduce flood risks. If lower platform levels are adopted, the developer owner shall be advised that the development site maybe subjected to higher flood risks. The developer/owner should consider installing flood protection measures where possible (See Clause 2.4 and Clause 13).
2.1.4
Ancillary Areas

(a) Where the minimum platform levels for developments in low-lying areas are significantly higher than the adjacent road/ground levels, the Qualified Person may apply in writing to Board for approval to construct the ancillary areas at below the minimum platform levels so as to tie-in with the adjacent low-lying road/ground levels or to satisfy other planning and environmental considerations. Notwithstanding the above, the Qualified Person shall advice the developer/owner that the platform level adopted for the ancillary areas should be as reasonably high as possible. b) Ancillary areas include i) Entrance driveways ii) Bin centres iii) Turfed compound areas iv) Car porch/porches for single unit developments and v) Other areas as maybe approved by the Board.

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