FRC Pipe Installations
Due to recent issues with Fibre Reinforced Cement (FRC) pipe installations within the district, Cairns Regional Council has sought to restrict their future use even though the FNQROC Development Manual allows the application.
Additional advice regarding their performance has also been sought from the Concrete Pipe Association of Australasia.
Use of FRC pipes are not recommended in the following environments:
- Aggressive ground conditions such as high acidity may attack and deteriorate the cement rich FRC matrix
- High water table environments may lead to excessive water absorption causing embrittlement and changes in properties of the semi-rigid state
- Testing has confirmed that rubber ring joints in FRC pipes may not be able to meet minimum shear load forces which can reasonably be expected in service, such as saturated pipes subject to traffic loads
On this basis Council will impose conditions as part of future operational works approvals which disallows their use.
The FNQROC development manual working group successfully collaborated with industry to develop improved procedures for undertaking CCTV footage of constructed stormwater drainage infrastructure as part of new subdivisions being handed over to Council. The previous procedures documented in the development manual were vague and lead to confusion and disagreements between the development industry and Council.
Both Industry representatives and Council officers worked closely together over a period of several months. A copy of the draft CCTV procedure is available for public comment and review on the FNQROC website. Now that this important issue has been addressed the working group will move on to its next task of addressing Early Plan Sealing concerns.