
A commercial property in Willawong needed a sewer pit lid replacement. The old lid was set into concrete, and the replacement had to be Class D. Citi Industries also carried out concrete work near the site’s grease trap. The project was completed in April 2026.
Project Overview
Work included removing the old sewer lid, installing a Class D replacement and disposing of waste. Concrete reinstatement around the existing grease trap was also included. Both areas needed attention during the same commercial project.
Challenges
Concrete Around the Sewer Lid
The old cover sat within a concrete surface. Its surround made the replacement more involved than lifting out a loose lid. Cutting the material would also create debris for disposal.
The Class D Requirement
A new sewer lid had to meet the specified Class D rating under AS 3996. Class D is a heavy-duty loading category for access covers. Its classification describes a loading requirement, not a particular finish or appearance.
Solutions
Removing the Old Lid
The crew cut concrete around the sewer access point and removed the original lid. They loaded the old equipment and cut material into the skip bin for disposal.
Installing the Replacement
Citi Industries supplied and installed the new Class D sewer cover at the access opening. This completed the sewer pit lid replacement.
Making Good the Concrete
The crew reinstated the affected concrete near the grease trap. This finished the separate groundworks task at the property.
Final Outcome
By April 2026, the new sewer cover was in place and the concrete near the grease trap was finished. The removed material had been taken off site.
Planning a Sewer Pit Lid Replacement?
Citi Industries provides commercial plumbing services, including sewer pit lid replacement, across Brisbane. The crew can assess the cover requirement and surrounding surface before quoting. For work involving grease trap covers, see the separate grease trap lid repairs service.
Commercial plumbing work may need approvals depending on its scope. The QBCC’s regulated plumbing guidance and Brisbane City Council’s commercial plumbing guidance explain requirements for relevant work.
For a site in Willawong or nearby suburbs, contact Citi Industries. Call 1300 002 484 to discuss the job.











