Anchoring grids to concrete ceilings is sometimes easier said than done.  Concrete slabs are sometimes strengthened using a process called post tensioning, a method that uses embedded high strength steel cables to reinforce the concrete.  Although this construction technique produces concrete sections with excellent structural integrity, locating post-tension cables (and rebar or conduit for that matter) in concrete presents a challenge. Making contact with post-tension tendons when drilling holes can cause catastrophic failure of overhead concrete panels. 

We recently installed a ceiling grid for a simulation lab at the Cleveland Clinic.  The specs for this new training area called for an exposed ceiling grid to support overhead medical equipment.  Because the ceiling was constructed using post-tension concrete slabs, locating the cables was neccessary prior to installing the ceiling grid.   Our installers used a Hilti PS 30 Ferrodetector to locate the cables and rebar in the concrete.  We then used Hilti KB-TZ Anchors to secure the Unistrut to the concrete.  The 18′ x 20′ grid was constructed from Unistrut P10001, P1028, and P1036.  For a finishing touch, the grid was painted white to give the room a clean, contemporary look and feel. 

This seemingly simple project presented “hidden challenges” that weren’t visible to the eye.  Ohio Service Supply’s winning combination of quality Unistrut and Hilti products and our team of highly skilled design engineers and installers ensured the success of this installation.  Does your project require a ceiling grid, or do you have more questions about securing Hilti anchors in post-tension concrete?  We welcome your challenge.  Contact Ohio Service Supply to discuss your project or to request a quote.