When significant cracking and troublesome slab curling threatened structural integrity at a community college building, a detailed petrographic and structural investigation uncovered surprising causes hidden beneath the surface. Issues ranged from overlooked control joints and excessively thick underlayments to embedded radiant heating tubing—all compounding the slab's distress. Discover how precise forensic analysis and targeted repair strategies not only resolved these hidden challenges but restored durability and safety for the long term.