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Posted by on Saturday, February 5, 2011 at 11:04pm.

100 lb of loose gravel can fill a 1-ft^3 box. Its specific gravity is 2.68. What is the dry rodded weight?

  • engineering - , Sunday, February 6, 2011 at 10:13am

    "The dry rodded unit weight of aggregate is determined by compacting dry aggregate into a container of a known specific volume according to standard procedures."

    It is not known if the gravel was compacted as per standards into the 1 ft³ container. If it was, the dry rodded unit weight is 100 lb/ft³. If it was not, the dry rodded weight is likely to be slightly higher, but in any case, not exceeding 62.4*2.68=167 lb/ft³.

    The specific gravity refers to the specific gravity of the material, i.e. a solid chunk of the material, without voids.

  • engineering - , Sunday, February 6, 2011 at 4:44pm

    Thanks so much, I was confused and then I used specific gravity formula and i got 167 lb.

  • engineering :) - , Sunday, February 6, 2011 at 4:59pm

    You're very welcome!

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