Global Pipe delivers first ever HOBAS GRP Vortex Manhole to Yarra Valley Water

Global Pipe is excited to announce the installation of the first GRP Vortex Manhole to a Melbourne water authority.

Donnybrook Road Branch Sewer

Design Information: DRE-1 GRP Vortex Manhole

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 ground water & 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 ground water 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.