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Rutting:When the traffic of the street becomes heavy for long periods of times the <br />asphalt begins to sink into the wheel path of the vehicles causing a rut. When there is a <br />rut it is usually along the length of the road and is one to two feet wide and there are <br />almost always two ruts, one for each wheel path of the vehicle. The severity of the rut is <br />to more than <br />Joint Spalling:Spalling is the deterioration of the edges of a concrete slab within twofeet <br />(0.6m) of the joint. The edges get chipped off concrete slabs causing spalling. Spalling is <br />caused by heavy traffic loads and environmental factors. <br />Raveling:The roads, mainly asphalt, over time become worn out and rough not smooth <br />as when they were first put in, often due to age and the effects of UV rays. Raveling <br />measures the severity of the roughness and coarseness of the top layer of the street. <br />8 <br /> <br />