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EVALUATION — Patches and Potholes 13 <br /> ' = Potholes <br /> S ' <br /> • e _ - _ _� rr Ua _ Holes and loss of pavement material <br /> ® • caused by traffic loading, fatigue and <br /> inadequate strength. Often combined <br /> 1 r <br /> • with poor drainage. Repair by <br /> y excavating or rebuilding localized <br /> _ _ potholes. Reconstruction required for <br /> °� •. - extensive defects. <br /> FF <br /> Ab <br /> 4d <br /> - + , <br /> - . . Small pothole <br /> where top course <br /> • r; ` - -• r has broken away. <br /> m <br /> �A <br /> 1p. <br /> 6. <br /> _ Multiple potholes <br /> -� _ r • show pavement <br /> .' failure, probably <br /> • - due to poor <br /> M subgrade soils, <br /> ' . '' frost heave,and <br /> m <br /> bad drainage. <br /> n <br /> w <br /> r <br /> g <br /> _ P <br /> r Large, isolated <br /> •' •• pothole, extends <br /> . M <br /> through base. <br /> Note adjacent <br /> F <br /> ° . <br /> • T4 alligator cracks <br /> which commonly <br /> deteriorate into <br /> potholes. <br />