TM 5-826-6/AFR 93-5
Figure 6-17. Flexible pavement deduct values, distress 56, swell.
6-3. Sample unit PCI. For each sample unit inspected, note how many individual deduct values are greater than 5, and
use figure 6-18 to obtain the sample unit CDV. The sample unit PCI is then calculated, and the rating (from fig. 5-18) is
entered on the flexible pavement survey data sheet. If the CDV for a sample unit is less than the highest individual
distress deduct value, the highest value should be used in determining the PCI.
6-4. Feature PCI. The PCI's of all sample units inspected in a feature are compiled into a feature summary, as shown in
figure 6-19. The mean PCI of the feature is then determined by averaging the individual sample unit PCI's. The overall
condition rating of the feature is determined by using the mean PCI and figure 5-18.