Our Projects & Services

Hollcon completed the upgrade of 36.5 kilometers of low-pressure distribution mains and associated services for Comdain Infrastructure on behalf of APA Group.

A large portion of the works was undertaken using insertion meaning the existing low-pressure gas mains were used as a conduit to carry the new high pressure (HP) poly main.

However, where circumstances dictatedHP main was also installed using open cut and directional drilling methods.

Project consisted of the upgrade of 17 kilometres of low-pressure distribution mains and associated services on Brisbane’s south side.

A large portion of the works was undertaken using insertion, meaning the existing low-pressure gas mains were used as a carrier pipes for the new high pressure PE main.

However, where circumstances dictated new PE main was also installed using open cut and directional drilling methods.

Project consisted of the upgrade of 10 kilometres of low-pressure distribution mains and associated services on Brisbane’s north side.

A large portion of the works was undertaken using insertion, meaning the existing low-pressure gas mains were used as a carrier pipes for the new high pressure PE main.

However, where circumstances dictated new PE main was also installed using open cut and directional drilling methods

Construction and commissioning of a new DN 110PE gas main to Brisbane’s Howard Smith Wharves.

The gas main was installed by a method of open trenching which consisted of 330 metres.

Hollcon worked closely with local businesses and residents to minimise disruptions, key challenges included traffic and pedestrian management in a highly urbanised area.

Hollcon was engaged to work with Codmah in early 2020 on behalf of Zinfra to relocate 607 meters of DN 150 steel gas main by means of open cut trenching and HDD.

The Griffith project presented a number of risks and challenges that were effectively managed by Hollcon and Codmah with careful planning.

Due to Hollcon’s high standard of work Hollcon was approached by Codmah to help install the pipe work for both the Horsley Park and Lidcombe intelligent pigging facility projects.

The scope of works for these projects included excavation, complexed pipe fabrication, pipe coating and wrapping.

Hollcon constructed and commissioned a new DN 110PE gas main to Brisbane’s Howard Smith Wharves for Diona on behalf of APA Group.

The gas main was installed by a method of open trenching which consisted of 330 metres.

Hollcon worked closely with local businesses and residents to minimise disruptions some of the key risks included traffic and pedestrian management in a highly urbanise area.

The scope of this project included the relocation of 254m of DN 100 API 5L X52 PSL2 and 6m of DN 50 mains as well as the relocation of 30m of DN 63 PE along Queen street Southport.

Hollcon has an ongoing contract for reinstatements in Southeast Queensland for the supply of concrete reinstatement services and supply and placement of turf for Queensland Gas Networks on behalf of APA Group.

Construction of 1980m of DN110PE from Cooper Rd, St Lucia to UQ St Lucia to supply the new sustainable futures precinct at the St Lucia Campus.

This challenging project included eighteen HDD crossings ,open excavation and lay working both day and night shift in a highly urbanised area.

Hollcon have successfully undertaken and delivered various diameter water projects for Diona on behalf of QUU in the Brisbane metro area.

Projects consisted of methods such as exhume and relay, new line open cut and pipe bursting techniques. Installing PE, PVC and DICL pipe within scheduled shut down time frames and achieving project milestones.

Particular safety considerations for these projects included removal and disposal of asbestos. Community and stakeholder engagement was key to the successful management of live traffic, pedestrians and residents with constant community updates.

constructed a 1980m of 110HDPE carrier pipe from Cooper Rd, St Lucia to Queensland University to connect the new sustainable futures precinct at the St Lucia Campus on behalf of APA Group.

Hollcon has experience in the delivery of all aspects of drainage and storm water infrastructure solutions.

The company has completed a number of successful drainage projects providing quality and cost-effective drainage solutions.

We are skilled at managing flood damage repairs as well as improving existing drainage infrastructure.

We also offer an extensive range of concrete and civil construction services ranging from concrete footpath and curb and channel works to road asphalting, earthworks and park projects.

Upgrade works to the Boonah and Gatton STP which included construction of a new discharge into Teviot Brook. Newley constructed pipe alignments and catchment pits along the Urban Utilities treatment plant sites.