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Concrete Scanning Report Template
Record the scan area, method, targets and depths, add photos of the marks, get it signed and download a PDF for the GC.
Concrete scanning report
Saved in this browser only. Photos stay on your device.
Doing this every week?
From scan request to signed report to invoice
Clevra takes the request from the GC, books the tech, collects the scan report on site and sends the invoice.
- Request forms where the GC attaches the drawings and photos
- Scan report checklists with required fields, photos and signatures (Pro)
- The signed PDF in the client portal
- Dispatch across sites, with a map and clash warnings
- Invoices from the job and card payments
How to fill in the report
- 1
Job and method
Client, area, equipment and the dielectric you calibrated to.
- 2
Findings and photos
One line per target with depth and spacing, then photos of the layout on the slab.
- 3
Limits and signatures
Keep or edit the limitations, sign on screen, have the client's rep sign, download the PDF.
Reference
Why the limitations section matters
A scan report is a record of what the radar showed on one day, in one area. If a core hits something later, the report is what shows what was scanned, how and with what limits.
Write down the area exactly
Grid lines, room numbers or measured offsets from a column. "Second floor" is not enough when someone moves the core location 18 inches.
Record the velocity you used
Depth is only as good as the dielectric. Note it, and how you got it. The GPR depth calculator backs it out from a bar at a known depth.
Photograph the marks
Paint wears off and gets covered. A photo of the layout with a tape in the frame is the best proof of what you marked.
Color keys
The APWA uniform color code covers underground utilities: red for electric power, yellow for gas and oil, orange for communications, blue for potable water, green for sewer, purple for reclaimed water, pink for survey marks and white for proposed excavation. Slab marks have no single standard, so agree one with the GC.
Concrete scanning report FAQ
What should a concrete scanning report include?
The client and site, the exact area scanned, the equipment and method, the dielectric or velocity used, each target with its depth and spacing, the cleared locations, photos of the marks, the limits of the scan, and signatures from the technician and the client's rep.
Can GPR tell rebar from a post-tension tendon?
Not from the screen alone. A tendon and a bar can look alike. Depth, the draped profile of tendons, spacing and the structural drawings are what tell them apart. If you are not sure, record it as an unknown target and mark it as no-go.
How accurate are the depths?
They depend on the velocity setting. Calibrate on a known depth, then call depths estimates. The default limitations text says they can be off by 10% or more.
Is there a standard color code for slab marks?
Not for slab scanning. The APWA uniform color code is for underground utilities, such as red for electric and orange for communications. Agree a key with the GC before you start and write it in the Marking key field.
Where do my photos go?
Nowhere. They are resized in your browser and put straight into the PDF. Nothing is uploaded to Clevra.
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