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  2. Five Advantages of a Gravel Driveway - AOL

    www.aol.com/lifestyle/five-advantages-gravel...

    Learn about gravel driveways pros and cons, what gravel driveways cost, and how much gravel driveway maintenance involves.

  3. Gravel road - Wikipedia

    en.wikipedia.org/wiki/Gravel_road

    This often causes problems if a gravel road is paved without adding sand and gravel sized stone to dilute the percentage of fines. [6] A gravel road is quite different from a 'gravel drive', popular as private driveways in the United Kingdom. This uses clean gravel consisting of uniform, rounded stones and small pebbles.

  4. California bearing ratio - Wikipedia

    en.wikipedia.org/wiki/California_bearing_ratio

    The California Bearing Ratio (CBR) is a measure of the strength of the subgrade of a road or other paved area, and of the materials used in its construction.. The ratio is measured using a standardized penetration test first developed by the California Division of Highways for highway engineering. [1]

  5. Road surface - Wikipedia

    en.wikipedia.org/wiki/Road_surface

    The decision whether to pave a gravel road or not often hinges on traffic volume. It has been found that maintenance costs for gravel roads often exceed the maintenance costs for paved or surface-treated roads when traffic volumes exceed 200 vehicles per day. [51] Pavement ends and turns into gravel surface road

  6. Driveway - Wikipedia

    en.wikipedia.org/wiki/Driveway

    A driveway (also called drive in UK English) [1] is a private road for local access to one or a small group of structures owned and maintained by an individual or group. Driveways rarely have traffic lights , but some may if they handle heavy traffic, especially those leading to commercial businesses or parks.

  7. Macadam - Wikipedia

    en.wikipedia.org/wiki/Macadam

    Telford kept the natural formation level and used masons to camber the upper surface of the blocks. He placed a 6-inch (15 cm) layer of stone no bigger than 2.4 in (6 cm) on top of the rock foundation. To finish the road surface he covered the stones with a mixture of gravel and broken stone. This structure came to be known as "Telford pitching."

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