Static field route #19313

What do I do when the slab is marked no-drill for hangers?

Hanger Systems, Rods, Straps, Trapeze & Anchors⛔ STOP / GET DIRECTIONField answer expansion

📖 Verified core answer

Do not drill a marked no-drill post-tension slab. Stop the hanger layout and use approved structural direction, GPR, or an engineered alternate support path.

Open in Field Rescue Open category

Field verification checklist

Stop drilling immediately in the marked no-drill bay.
Confirm slab type, structural notes, and hanger load path.
Check whether there is an approved alternate anchor zone nearby.
Document gridline, level, and planned hanger locations.
Hold for foreman/GC/structural direction before loading the run.

Ask foreman

This bay is marked no-drill for post-tension slab work at [location]. I stopped the hanger layout before drilling. Do you want GPR/structural direction or an approved alternate support path?

Text to foreman

Route options

AMake the field correction only if it is within your assignment and the approved method.

BHold and document the condition if the fix affects support load path, structural steel, seismic restraint, life safety, another trade, or inspection.

CBring the foreman/detailer the location, what you checked, and what decision you need before loading, cover, startup, or rework.

Do not do this

Do not drill blindly into a post-tension no-drill zone or “test” the slab with a hammer drill.

Why this matters

A damaged post-tension cable can create major structural danger, job shutdown, repair cost, and serious injury risk.

Final verification

Use this as field training guidance. Final direction still comes from the foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, structural/seismic detail, and AHJ/code requirements.

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