As part of a structural loading analysis, ACER performed non-destructive testing of the concrete plank floor system associated with this high-rise building.  Using a combination of our GSSI Structure Scan Mini HR and James Non-Destructive Testing Systems R-Meter (MKIII), ACER was able to determine the plank thickness, the number and diameter of voids within each plank section, and the number, depth, and approximate diameter of the strands within the planks.  The testing revealed the planks were 8-inch precast, pre-stressed hollow care concrete planks.