PUB’s External Works Requirements

Legend:
Architecture
C&S
M&E

Objectives:
  • To assess whether the proposed drainage and sewerage works are in compliance with broad planning parameters (e.g. maximum allowable peak runoff, sewer setback, connection to public sewer etc.)
Requirements Supporting Documents

Peak Run Off

  • Key Objective: To demonstrate how this is catered for, area is set aside for detention tank provision, location, OR drain widening.
  • Calculation of peak run off factor (C value) max. 0.55 (based on code and chart) e.g. area of development of greenfield site.
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Roadside Drain Capacity

  • For projects where drains need to be rebuilt/entrance culvert. PUB to provide required capacity during Pre-Submission consultation.
  • Size of new culvert (will be advised by PUB).
  • Public Drains - Drain Size and Location.
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Sewer Connection

  • Connection Point – where the proposed location is.
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Sewerage System

  • Alignment of Sewers, Dimensions, Gradient.
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Drainage Reserve

  • Location (align to DIP), width.
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Requirements Supporting Documents

Pre-Condition CCTV of Sewers (advisable)

Can be provided at Piling Gateway (G1.5) or Construction Gateway (G2)

  • Condition to be checked at TOP stage.
  • Project team to rectify if cracks/damage are identified.
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Objectives:
  • To evaluate the detailed plans showing the proposed drainage (e.g. upgrading, new construction) and sewerage works (e.g. sewer diversion)
Requirements Supporting Documents

Public Drains (External)

  • Details of Roadside Drains based on PUB’s requirements.
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Public Sewerage System (External)

  • Details of Sewerage System based on PUB’s requirements.
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Objectives:
  • To evaluate the detailed plans showing the proposed drainage (e.g. upgrading, new construction) and sewerage works (e.g. sewer diversion)
Requirements Supporting Documents
  • Site plans, water reticulation schematic / layout drawing of WSI design works and water requirements.
  • Specified activities within water pipe corridor.
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  • Earth Control Measures (ECM) Plan.
  • Details of temporary works affecting drainage / within drainage reserve.
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  • Details and scope of works on manholes and sewers.
  • Specified activities within sewer corridor.
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