Low Volume Road Maintenance - Pennsylvania Department of Transportation 1983 - Video VH-80 - Maintenance techniques are shown for three road types: unimproved, stabilized and pie crust roads. Advance planning and inspection are emphasized. The importance of good road drainage and maintenance of a road crown are stressed. Grading and side-dozing are demonstrated for ditch clearance and shaping, and crown measurement is shown. The process of stabilization is also demonstrated.
12 авг 2010
