Water and Waste to enforce the supply of calcareous aggregate concrete

From 1 October 2018, Water and Waste will start to enforce the supply of calcareous aggregate concrete on sewer infrastructure projects on the Gold Coast.

City of Gold Coast’s Water and Waste Directorate currently maintains more than 69,000 maintenance holes. Under certain conditions, gases in the sewerage system can cause corrosion of these assets. By specifying calcareous aggregate concrete for new sewer maintenance holes, this increases their resistance to acidic corrosion, resulting in reduced ongoing maintenance costs.

Contractors need to start procuring calcareous aggregate concrete as specified in the SEQ Code IPAM List, available from http://www.seqcode.com.au/products/. Refer to category “SEWERAGE MISCELLANEOUS ITEMS”, specifically ‘Pre-cast Maintenance Holes’, and ‘Cast in-situ MH’s (Concrete-special class)’.

Further information can be provided to you at your next project pre-start meeting. If you have any queries please contact Coordinator Asset Audit & Handover, Nathan Pearson on (07) 5582 8145.