Post-Tension Slab Sawing Protocols
Post-tensioned concrete slabs contain high-strength steel tendons tensioned to 30,000+ PSI. Saw operators must verify cable depth prior to joint cutting.
Heavy Infrastructure
Published: 2026-08-20
Cutting Pre-stressed and Post-tensioned Concrete: Safety and Blade Selection
QDB
QDB Engineering
Diamond Tooling Engineers · 15+ Years Field Experience
Direct Answer: Sawing pre-stressed and post-tensioned (PT) concrete slabs requires pre-cut non-destructive radar (GPR) scanning to locate high-tension steel cables, combined with laser-welded medium-soft bond diamond blades engineered for high-PSI concrete with embedded steel. Never saw into active PT cable anchor zones without structural engineering approval, as severed cables can snap violently out of slabs.
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Frequently Asked Questions
What happens if a post-tension cable is accidentally cut?
A severed PT cable releases thousands of pounds of tension instantly, shooting out through the slab edge and risking severe injury or structural failure.