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GEOLYSIS.SPT_ENERGY_CORRECTION function

Returns the SPT N-value corrected for field procedures.

Syntax

GEOLYSIS.SPT_ENERGY_CORRECTION(recorded_spt_n_value, [energy_percentage], [borehole_diameter], [rod_length], [hammer_type], [sampler_type])

The GEOLYSIS.SPT_ENERGY_CORRECTION function syntax has the following arguments:

  • recorded_spt_n_value (number ) Recorded SPT N value. Valid values are between (0 < recorded_spt_n_value <= 100)
  • energy_percentage (number , Required) Percentage of energy reaching the tip of the sampler. Valid values are between (0.0 < energy_percentage <= 1.0). If omitted, energy_percentage = 0.6.
  • borehole_diameter (number , Required) Borehole diameter (mm). Valid values are between (65.0 <= borehole_diameter <= 200.0) If omitted, borehole_diameter = 65.0.
  • rod_length (number , Required) Length of spt rod (m). Valid values are (rod_length > 0.0). If omitted, rod_length = 3.0.
  • hammer_type (string , Required) Hammer type. If omitted, hammer_type = "donut_1". Available options are "automatic", "donut_1", "donut_2", "safety", "drop" and "pin"
  • sampler_type (string , Required) Sampler type. If omitted, sampler_type = "standard". Available options are "standard" and "non_standard".