A hospitality venue in Moorooka needed its grease trap lids replaced. The scope covered concrete cutting, removal of the existing lids, and a new set of solid top lids and frames rated to Class D dimension. The crew then poured fresh concrete back around the trap to close the ground.
The operator brought Citi Industries in to run the job as a do and charge scope. The crew worked the lid replacement at the Moorooka site, cleared the waste off site, and handed the trap back ready for service.
Project Overview
This job replaced the existing grease trap lids and frames at a Moorooka food service site. The new units were specified as solid top, with the frame to Class D dimension. The crew cut the existing lids out, lifted them clear, and took the waste off site via skip bin. New frames and lids then went in, and the affected area around the trap was concreted back.
Scope at a glance:
- Concrete cutting around the existing grease trap lids
- Removal of the existing lids
- All waste removed from site via skip bin
- Supply and install solid top lids and frames to Class D dimension
- Install the new lids in place
- Concrete reinstatement of the affected area around the grease trap
Challenges
Grease trap lid replacement is a licensed trade waste job. In the Brisbane service area, which includes Moorooka, the work sits under Urban Utilities’ trade waste consent requirements. Those requirements govern how operators maintain and modify a grease trap across the network. The work also sits under the Queensland Plumbing and Drainage Act 2018. The Act sets out what counts as compliant work on a trade waste installation.
The scope type adds its own constraints. The original pour sets the frame into the concrete slab above the trap. Cutting it out cleanly, without damage to the chamber, is the step that keeps the job on scope.
Key constraints on this project:
- The cutting method had to protect the trap chamber below the lid
- Waste from a working grease trap could not go to general waste disposal
- The crew had to confirm the Class D rating before the new frames went to fabrication
- Reinstated concrete had to seat the new frames flush with the surrounding slab
Solutions
Citi Industries worked the job in a set order, since each stage locked the next one in.
Cutting Out the Existing Lids
The crew set out the cut lines around the existing lid frames first. They then ran the concrete cutting around each perimeter. The old lids and frames were taken out once the slab was through. The surrounding concrete came out in manageable pieces for removal.
Removing Waste via Skip Bin
The crew staged a skip bin on site for the day. Concrete offcuts, old frames, and the old lids all went into the bin. The waste then left site in the skip. For food service operators who need the full picture, Citi Industries delivers end-to-end grease trap design and installation alongside repair work.
Installing New Class D Solid Top Lids and Frames
New solid top lids and frames went in to Class D dimension. A Class D lid is rated for slow-moving heavy wheeled traffic. That spec is standard for grease traps in commercial driveways, loading areas, and shared service yards. Solid top refers to a sealed cover plate, as opposed to a grated or vented one.
The crew bedded the frames into the prepared opening. They set each frame against the surrounding slab height and locked it in before the concrete went back. Getting the frames flat and square is the step that decides whether the finished lid sits flush. Lid replacement work of this kind sits under Queensland’s regulated plumbing work requirements. Those rules restrict the work to a licensed plumber.
Concrete Reinstatement Around the Trap
Once the frames were set, the crew reinstated the cut-back area with concrete. The pour went right up to the frame edge, with no gap left between the frame and the surrounding slab. The surface was finished to match the slab around it.
Final Outcome
The crew took the Moorooka grease trap from a lid replacement scope to a sealed, Class D rated installation. Citi Industries left the site with the new lids seated, the frames locked in, the concrete reinstated, and the waste off site in the skip.
- New Class D rated solid top lids and frames installed to the specified dimension
- Existing lids cut out and removed to scope
- All waste taken off site via skip bin
- Concrete reinstated flush with the surrounding slab around the trap
Book a Grease Trap Lid Replacement in Moorooka or Across Brisbane
So if your lid is already failing or a trade waste inspection is coming up, call our team. We will assess your site for compliance and scope the lid replacement before the next inspection flags it.
Call Citi Industries on 1300 002 484 to discuss your project.
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