Post-Tension Cable Mapping in British Columbia
Post-tension cables hold a slab in compression under enormous force. Cutting or coring through one releases that force suddenly — a serious safety hazard that can compromise the structure. Post-tension mapping locates the cables precisely so penetrations avoid them entirely.
Leaks.ca is the educational leak detection hub and service-support division of Leak.ca, helping BC property owners understand leak risks and connect with professional detection services when needed.
Post-tension cable mapping uses GPR to detect and map the tensioned tendons and their drape profile within a slab, so cores, cuts and anchors are placed in safe zones clear of the cables — essential in the post-tensioned high-rises and parkades common across BC.
- Scan the slab to detect the tendons
- Map cable runs and approximate profile
- Mark no-cut zones and clear penetration points
- Confirm with the structural drawings where available
- Post-tension cables and tendons
- Cable drape and profile through the slab
- Rebar and conduit alongside the tendons
- Safe penetration zones between cables
Any penetration into a post-tensioned slab — the highest-stakes concrete scan.
Coring/cutting contractors and structural engineers map PT cables before work on post-tensioned floors so no penetration ever strikes a tendon.
Property Types We Cover
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Post-Tension Cable Mapping — FAQ
The cable is under high tension; cutting it releases that force suddenly — a serious safety hazard — and can reduce the slab's structural capacity. GPR mapping locates the tendons so every penetration avoids them, which is why scanning post-tensioned slabs is mandatory before any cut or core.
Post-Tension Mapping by BC City
Post-Tension Cable Mapping guidance for every major British Columbia community.
Metro Vancouver
Fraser Valley
Vancouver Island
Sea-to-Sky
Sunshine Coast
Okanagan
Thompson–Nicola
Kootenays
Northern BC
Need post-tension mapping in BC?
From a single pre-core scan to a full structural survey, owners and contractors can reach professional concrete scanning through Leak.ca. Leaks.ca is the educational division — for booking and on-site detection across British Columbia, our service partner Leak.ca handles professional assessments.
Educational hub & service-support division of Leak.ca · Serving all of British Columbia · Since 1999