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.
Do not drill blindly into a post-tension no-drill zone or “test” the slab with a hammer drill.
Check
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.
Steps
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.
Say this to your 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?