Before You Core or Cut Concrete: A Pre-Work Checklist
Before Coring or Cutting Concrete: A 7-Step Checklist
Most problems in coring and cutting come from decisions made before the machine starts. This checklist covers what a contractor, consultant or building owner should settle first, so the opening is made once and made safely.
1. Confirm exactly what you need
Decide the size, shape and position of each opening. A pipe sleeve, a duct, a door and a window need different tools, and the answer also tells you how much concrete is being removed.
2. Gather the drawings
Collect the structural and services drawings if they exist. They show the likely layout of reinforcement, conduits and pipes. Treat them as a starting point only, because as-built conditions often differ from the drawings.
3. Get the concrete scanned
A GPR scan locates rebar, post-tension cables, conduits and voids in the exact area you plan to open. This is the step that replaces guessing with data. Scan the full working area, not only the centre point, so there is room to move an opening if something is in the way.
4. Mark the results on the surface
The scan is only useful to the crew if it is visible on the slab or wall. Mark safe zones and any objects to avoid before anyone starts, and keep the markings until the work is done.
5. Check both sides of the element
For a slab, look at what sits below it: ceilings, services, people working or living underneath. For a wall, check the room behind it. Cores and cuts pass all the way through, and so do debris, water and slurry.
6. Plan dust, water and noise
Coring and sawing use water to cool the cutting tool, which produces slurry that needs to be contained and removed. Dust and noise matter in occupied buildings. Agree working hours and protection for floors and equipment in advance.
7. Get approvals
In many buildings the owner, facilities manager or main contractor must approve any opening before work starts, and structural openings may need a consultant's sign-off. Check what applies to your project early, since approvals can take longer than the work itself.
Why the order matters
Each step reduces the chance of a mistake that is expensive to reverse. A cut post-tension cable or a drilled conduit can stop work, endanger people and lead to costly repairs. The scan and the surface marking are the two steps that most directly prevent that.
Alpha Core Drill provides GPR scanning, core drilling from 12 mm to 600 mm and wall saw cutting across Dubai, Abu Dhabi, Sharjah and Ajman, so one team can handle the scan and the work that follows. Contact us to plan your next opening.