Assignment Task: A test using the 4-pin method is being conducted to determine the soil resistivity. The test data are as follows.
Spike length 150 cm
Spike spacing 45 m
Soil temperature during test 30 deg.C
Soil moisture during test 20%
Resistance value 2 .2 ohm
Q1. Calculate the soil resistivity under test conditions.
Q2. Calculate the resistivity at soil moisture content of 12%.
Hint: Consider the soil type as typical topsoil and use tables in the reading materials for correction factors.