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  2. Standard penetration test - Wikipedia

    en.wikipedia.org/wiki/Standard_penetration_test

    Symbol used in drawings Standard penetration test N values from a surficial aquifer in south Florida. The standard penetration test (SPT) is an in-situ dynamic penetration test designed to provide information on the geotechnical engineering properties of soil. This test is the most frequently used subsurface exploration drilling test performed ...

  3. DN factor - Wikipedia

    en.wikipedia.org/wiki/DN_Factor

    N = bearing speed. This is the maximum amount of revolutions per minute (RPM) that the bearing will move. The DN factor of a bearing is obtained by multiplying the median diameter (A + B)/2 by RPM, and sometimes by a correction factor. [2] [6] This correction factor may vary from manufacturer to manufacturer.

  4. Bearing capacity - Wikipedia

    en.wikipedia.org/wiki/Bearing_capacity

    The bearing capacity of soil is the maximum average contact pressure between the foundation and the soil which should not produce shear failure in the soil. Ultimate bearing capacity is the theoretical maximum pressure which can be supported without failure; allowable bearing capacity is the ultimate bearing capacity divided by a factor of ...

  5. Cone penetration test - Wikipedia

    en.wikipedia.org/wiki/Cone_penetration_test

    One advantage of CPT over the Standard Penetration Test (SPT) is a more continuous profile of soil parameters, with data recorded at intervals typically of 20 cm but as small as 1 cm. Manufacturers of cone penetrometer probes and data acquisition systems include Hogentogler, which has been acquired by the Vertek Division of Applied Research ...

  6. Bridge Software Institute - Wikipedia

    en.wikipedia.org/wiki/Bridge_Software_Institute

    Unit end bearing resistance and unit skin friction resistance versus SPT N values are given in the FDOT research bulletin RB-121, for the different soil types. Driven pile capacity calculated using CPT data can be determined by three separate methods.

  7. Talk:Standard penetration test - Wikipedia

    en.wikipedia.org/wiki/Talk:Standard_penetration_test

    The first 10cm layers has N-value of 3 so if there were a 30cm layer with N-value of 3, the SPT can reach the bottom of the layer with three blows, and the first should stop at 10cm depth. This is what I mean by that the first layer has N-value of 3. The middle layer is empty, and the bottom layer has N-value of 3 as well.

  8. William B. Harrison, Jr. - Pay Pals - The Huffington Post

    data.huffingtonpost.com/paypals/william-b...

    From January 2008 to December 2012, if you bought shares in companies when William B. Harrison, Jr. joined the board, and sold them when he left, you would have a -29.6 percent return on your investment, compared to a -2.8 percent return from the S&P 500.

  9. California bearing ratio - Wikipedia

    en.wikipedia.org/wiki/California_bearing_ratio

    The CBR is expressed as a percentage of the actual load causing the penetrations of 2.5 mm or 5.0 mm to the standard loads on crushed stone. A load penetration curve is drawn. The load values on standard crushed stones are 1,370 kgf (13.44 kN) and 2,055 kgf (20.15 kN) at 2.5 mm and 5.0 mm penetrations respectively. [citation needed]