TM 5-826-6/AFR 93-5
Figure A-46. Low severity raveling/weathering in porous friction course pavement.
(b) Medium severity level (M).
- Aggregate and/or binder has worn away with loose and missing particles causing some FOD potential.
The surface texture is moderately rough and pitted (fig. A-47).
- For porous friction courses, fine aggregate is missing and many of the larger pieces are dislodged.
The surface is rough and pitted, but average depth of erosion is less than 1/4 inch. Some FOD
potential is present (figs. A-48 and A-49).
Figure A-47. Medium severity raveling/weathering.