Doreen to Diamond Creek Sewerage Project
Background:
YVW “The project involves constructing a new 10-kilometre-long section of sewer pipe, and 17 new sewer maintenance holes, within parkland and road reserves in the Doreen, Yarrambat and Diamond Creek areas.”
Project Scope:
Asset Owner: Yarra Valley Water
Client: Viadux
Contractor: MFJ Constructions
Supply of Manholes:
MH 01 – OD1535 HOBAS Pre-Fabricated Shaft, SN10,000, 5.6m depths
MH 02 – OD2160 HOBAS Pre-Fabricated Shaft, SN10,000, 8.61m depths
MH 03 – OD2160 HOBAS Pre-Fabricated Shaft, SN10,000, 12.5m depths
MH 04 – OD1535 HOBAS Pre-Fabricated Shaft, SN10,000, 2.59m depths
MH 05 – OD1842 HOBAS Pre-Fabricated Shaft, SN10,000, 4.715m depths
MH 06 – OD1535 HOBAS Pre-Fabricated Shaft, SN10,000, 4.94m depths
MH 07 – OD1842 HOBAS Pre-Fabricated Shaft, SN10,000, 7.873m depths
MH 08 – OD2160 HOBAS Pre-Fabricated Shaft, SN10,000, 7.86m depths
MH 09 – OD2160 HOBAS Pre-Fabricated Shaft, SN10,000, 13.65m depths
MH 10 – OD1842 HOBAS Pre-Fabricated Shaft, SN10,000, 4.4m depths
MH 11 – OD2160 HOBAS Pre-Fabricated Shaft, SN10,000, 10.8m depths
MH 12 – OD2160 HOBAS Pre-Fabricated Shaft, SN10,000, 8.4m depths
MH 13 – OD1842 HOBAS Pre-Fabricated Shaft, SN10,000, 3.1m depths
MH 14 – OD1842 HOBAS Pre-Fabricated Shaft, SN10,000, 4m depths
MH 15 – OD1842 HOBAS Pre-Fabricated Shaft, SN10,000, 4.16m depths
MH 15A – OD2160 HOBAS Pre-Fabricated Shaft, SN10,000, 10.8m depths
MH 16 – OD2160 HOBAS Pre-Fabricated Shaft, SN10,000, 7.7m depths
Design Information:
HOBAS Maintenance Holes create a complete uncompromising system of the highest quality and meet the requirements of a wide variety of applications.
HOBAS CC-GRP Maintenance Holes provide Water Authorities with significant safety and long-term benefits, including:
Reduced OHS Risk
- Reduced falling from height risk to workers, maintenance staff and the general public;
- Reduces the risk of workers falling with no need for the high risk working at heights tasks of concrete formwork, scaffolding, concreting, ladder fitting and HDPE lining.
- Reduces the risk of workers and the public falling into a deep open shaft – typical concrete maintenance build takes 4 weeks compared to a typical HOBAS GRP maintenance hole build of one day
Other Benefits
- Rapid installation – Typical installation time is 1 day
- Drop-in-place base – Bases are dropped-in-place on crushed rock bedding, reducing OHS risks, faster installation time, and lower expense.
- Clean fill – Structurally designed to support groundwater & overburden loads, reducing OHS risks, CO2 emissions, faster installation time, and lower expense.
- Push-Fit Assembly – Push-together-assembly with FWC connections, reducing OHS risks, faster installation time, and lower expense.
- Anti-Buoyancy – Designed to resist groundwater immersion, uplift and buoyancy
- 100 Year Service Life – Constructed with HOBAS CC-GRP pipe with proven sewer durability, reducing OHS risks, long-term maintenance and expense.
- Ease of Future Connections and Modifications – easily cut with a diamond-tipped blade, fixed to with chem-set bolts and fibreglass laminated connections. Global Pipe has a pool of qualified tradespeople.
- Free from porosity issues – GRP is a highly dense material
- Eliminates the need for lining or relining of Manholes
- Sulphur dioxide resistant – HOBAS manholes provide resistance against a wide range of chemicals including sulphur dioxide.
