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3.2.6 Sewer Gravity Mains & Access Chambers

This section details the specifications for the Sewer Gravity Mains and Access Chambers.

Zone 1 — Bungalows 17–59

  • Pipe: DN150 PVC gravity main running parallel to access road, discharging to SPS1 (SSP1) septic tank

  • Access Chambers:

    • Access Chamber 1: Located in the common area next to Bungalow 17
    • Access Chamber 2: Located in the common area between Bungalows 39 and 40
    • Access Chamber 3: Located in the common area between Bungalows 55 and 56

    Known Issues

    • Groundwater Ingress: Observed through joins in the access chamber nearest SSP1
    • Sealing: Gaps present between lids and riser pipes in both chambers

Zone 2 — Bungalows 1–16

  • Pipe: Gravity sewer main to SPS2 (SSP2) STEP tank
  • Note: Previously fed a distribution box and septic tanks (now removed and replaced by the 22 kL STEP tank)

Zone 3 — Bungalows 65–66, 75–80

  • Pipe: Gravity sewer mains to SSP4 and SSP5 septic systems, then to SPS3 (SSP3) via 32 mm pipeline

Version Control

Version Date Description
1.0 2025-10-06 Initial Release
2.0 2026-06-22 Updated Zone 2 for STEP tank; added Zone 3 reference

Next Review Date: 2026-12-22