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Coring Construction Case Study — Night Shift in Vaughan, ON

Location: Vaughan, Ontario
Site: commercial unit (tenant improvement / office environment)
Client: commercial customer (requested a report for building management)
Services: GPR scanning + diamond core drilling + cleanup + official report
Schedule: one night shift
Scope: 10 core holes total (3” and 4” diameters)

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Project overview
This coring construction scope supported a new plumbing line inside a commercial unit in Vaughan. The tenant space was under build-out (new stud walls and rough-ins), but surrounding offices were active during the day. The work had to be completed overnight to avoid noise and disruption.

gpr scanning

The client needed 10 clean penetrations for plumbing rough-in (sink and mixer supply/drain routing), plus documentation for building management. We delivered scanning, drilling, cleanup, and an official report in a single night window.

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The challenges
Night-only access: a short work window means the sequence has to be tight and predictable.
Unknown embeds: the unit was being built out, but what’s in the slab is not always obvious. Blind drilling is where projects get expensive.
Tight drilling positions: several penetrations were located close to wall tracks and inside framed areas, so the setup had to be clean and controlled.
Documentation required: the client requested an official report for management, not just “holes are done.”

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Our work

  1. Pre-drill GPR scanning
    We scanned the drilling line to reduce blind risk and confirm safe drilling locations around potential embedded items.
  2. Diamond core drilling (1”–4”)
    We drilled 10 penetrations sized for plumbing rough-in. Holes were positioned to match the marked layout and the planned line.
  3. Cleanup and handoff
    We controlled dust and slurry, cleaned the work area, and left the slab ready for the next trade.
  4. Official report
    We prepared and delivered an official report package for building management, documenting the scanning and completed locations.
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Result
10 core holes completed overnight with controlled scanning, clean drilling, and cleanup. The client received the report required for internal management, and the plumbing rough-in could proceed without rework.


Coring Construction FAQ

Answers for commercial coring construction jobs that require scanning, night work, clean drilling, and reporting.

It typically refers to diamond core drilling in slabs or walls to create round penetrations for plumbing, HVAC, electrical sleeves, and drains without damaging surrounding concrete.

Scanning reduces blind risk. It helps confirm safer drilling zones and prevents the most common failure mode on commercial sites: drilling into something you didn’t know was there.

Yes. Night shifts are common in office environments when daytime noise is restricted. The trade-off is that planning and sequencing must be tighter because the window is shorter.

Common ranges are 1” and 4” for many sink and drain/supply penetrations, depending on the pipe and sleeve requirements.

Usually it includes documentation of the scan area, marked locations, and a clear record of completed penetrations so management has something formal to file and approve.

Location, number of holes, diameters, slab thickness (if known), access hours (night/day), what’s below the slab, and photos/marked layout.