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Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911: Water Purification Plant, Washington, D. C. Results of Operation.American Society of Civil Engineers

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Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911: Water Purification Plant, Washington, D. C. Results of Operation.

Name: Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911: Water Purification Plant, Washington, D. C. Results of Operation.
Author: American Society of Civil Engineers

American Society of Civil Engineers

Civil engineering -- Periodicals; Water treatment plants

~Table 1--Filter Sand as Originally Placed.~
  =======+===============+============+========+==========
  Filter |    Average    |  Average   |Depth of| Average
    No.  |effective size,| uniformity |sand, in|turbidity.
         |in millimeters.|coefficient.| inches.|
  -------+---------------+------------+--------+----------
 |     0.32      |    1.88    |  35.3  |  2,600
 |     0.30      |    1.78    |  37.7  |  2,200
 |     0.32      |    1.77    |  40.2  |  3,000
 |     0.29      |    1.80    |  42.5  |  1,800
 |     0.34      |    1.74    |  44.9  |  2,700
 |     0.31      |    1.78    |  37.7  |  2,300
 |     0.29      |    1.72    |  40.1  |  2,300
 |     0.32      |    1.75    |  40.2  |  2,800
 |     0.32      |    1.78    |  42.5  |  2,900
 |     0.30      |    1.69    |  39.5  |  2,500
 |     0.34      |    1.93    |  37.1  |  2,600
 |     0.29      |    1.66    |  34.7  |  2,100
 |     0.32      |    1.83    |  33.6  |  3,500
 |     0.29      |    1.66    |  33.6  |  2,600
 |     0.33      |    1.75    |  39.0  |  2,400
 |     0.33      |    1.78    |  42.3  |  3,000
 |     0.33      |    1.86    |  45.5  |  3,300
 |     0.34      |    1.80    |  48.7  |  3,100
 |     0.34      |    1.80    |  52.0  |  .....
 |     0.34      |    1.87    |  39.0  |  2,700
 |     0.32      |    1.82    |  42.3  |  2,400
 |     0.33      |    1.74    |  45.5  |  2,200
 |     0.33      |    1.81    |  48.7  |  2,300
 |     0.35      |    1.80    |  52.0  |  2,600
 |     0.29      |    1.64    |  39.5  |  2,400
 |     0.31      |    1.71    |  37.1  |  2,100
 |     0.31      |    1.71    |  34.7  |  1,900
 |     0.33      |    1.93    |  33.6  |  2,300
 |     0.34      |    1.93    |  33.6  |  3,000
  -------+---------------+------------+--------+----------
  Maximum|     0.36      |    1.93    |  52.0  |  3,300
  Minimum|     0.29      |    1.64    |  33.6  |  1,800
  Average|     0.32      |    1.77    |  40.4  |  2,600
  =======+===============+============+========+==========

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Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911: Water Purification Plant, Washington, D. C. Results of Operation.

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