Concrete project planning
Concrete removal before a redundant floor opening is closed
- Concrete scope
- Trade coordination
Closing an old stair or service opening can require removal around it, but the demolition contractor does not decide whether its edges are suitable for infill. Start with the approved final floor arrangement and the replacement contractor's receiving detail.
CoreCut assesses defined concrete removal. Structural infill design, support and new construction remain separate responsibilities. A removed curb is not a completed floor.
Compare retaining, reducing and closing the opening
| Illustrative outcome | Possible removal question | Design responsibility |
|---|---|---|
| Keep the opening | Does any obsolete edge construction actually need to leave? | Continued use and protection of the retained opening |
| Reduce the opening | What local edge alteration is specified? | New floor arrangement and retained structure |
| Close the opening | Which defined obstructions or edge portions are removed? | Complete infill and connection design |
Scroll across the table to see all columns.
This comparison is not a reinforcement or load-capacity detail. Existing edges must be assessed for the actual proposal rather than assumed to provide a ready-made support for new concrete.
Identify the objects around the void
Distinguish curbs, finishes, redundant services and structural concrete. Identify who removes any old stair or equipment and what it leaves. The concrete-stair guide addresses a stair assembly; closing its former opening is a separate receiving project.
Keep the area below on the plan. Access, retained interiors and temporary edge protection must be coordinated by the responsible team before the removal arrangement is confirmed.
State the endpoint for the infill contractor
The receiving detail should identify the retained boundary and any inspection before new construction. Cutting away an obstruction does not supply reinforcement, formwork, new concrete or a finished surface unless separately contracted with the appropriate provider.
The existing new-opening guide concerns creating a void. This page addresses the inverse decision: what, if anything, must be removed before a separately designed closure can begin.
Describe the actual change
An illustrative renovation might keep most edges and remove only an obsolete raised curb. Another may require a different designed edge condition before infill. Neither should be specified from the visual outline of the hole alone.
Ask CoreCut to assess the removal with the final floor plan, structural and receiving details, areas above/below and the GC contact. State whether the opening stays, reduces or closes so the removal request serves the intended construction.