What is gravel?


Gravel /ˈɡrævəl/ is composed of unconsolidated rock fragments that have a general particle size range and include size classes from granule- to boulder-sized fragments. Gravel is sub-categorized by the Udden-Wentworth scale into granular gravel (>2 to 4 mm or 0.079 to 0.16 in) and pebble gravel (>4 to 64 mm or 0.2 to 2.5 in). One cubic yard of gravel typically weighs about 3000 pounds (or a cubic metre is about 1,800 kilograms).

Read more about Gravel.

Some articles on gravel:

Camille Gravel
... Camille Francis Gravel, Jr ... Gravel spent much time and money supporting the Roman Catholic Church ...
Culture and Sightseeing - Lautzenhausen in Film
... In 1960 and 1961, the film Black Gravel (Schwarzer Kies) directed by Helmut Käutner, was shot in Lautzenhausen ... a man named Robert Neidhardt (Helmut Wildt), a gravel dealer in the fictitious village of "Sohnen", who, on the sly, sells gravel to smaller companies which was meant for building the runway ... the German word schwarz ("black") in the title does not refer to the gravel's colour, but rather imparts the meaning of illegality, as in "black market" ...
Modern Land Drains
... utilising rigid or flexible plastic pipes pierced with holes, laid in pea gravel ... (The pea gravel is pea sized pebbles without sharp points to damage to pipe.) Geotextile material can surround the gravel to keep out silt ... Specialised mole ploughs are available that can form the hole, insert the perforated pipe (and gravel if required), all in one simultaneous and continuous process ...
South Maury Island Environmental Issues - Possible Advantages and Disadvantages of The Glacier Northwest Gravel Pit
... Northwest, Maury island has one of the largest reserves of gravel rock, and, because it is an island, the gravel can be easily transported on barges to other areas of the Pacific Northwest ...
Gravel - Relationship To Plantlife
... This outcome derives from the inferior ability of gravels to retain moisture, as well as the corresponding paucity of mineral nutrients, since finer soils that contain such minerals are present in ...

More definitions of "gravel":

  • (verb): Cover with gravel.
    Example: "We gravelled the driveway"

Famous quotes containing the word gravel:

    Let the new faces play what tricks they will
    In the old rooms; night can outbalance day,
    Our shadows rove the garden gravel still,
    The living seem more shadowy than they.
    William Butler Yeats (1865–1939)

    ‘Lay me a green sod under my head,
    And another at my feet;
    And lay my bent bow at my side,
    Which was my music sweet;
    And make my grave of gravel and green,
    Which is most right and meet.
    —Unknown. Robin Hood’s Death (l. 65–70)