شبكة التخطيط العمراني بسم الله الرحمن الرحيم
للكاتبين
E.A. Eisawy and H. A. Sallam
Operational Safety Dept., National Center for nuclear safety
ABSTRACT
One major factor in the design of earth electrodes is the soil resistivity. This
paper is based on experience obtained at sites with high soil resistivity
variations. Many test measurements have been made to study the effect of
horizontal variations in soil resistivity at several selected locations at Inshas
area. The method is also applicable to soils with arbitrary soil resistivity
variations with depth. With such variations in the measured values, the question
then arises as to the correct value to be taken for the design. The paper presents
a methodology for the statistical estimation of soil resistivity from any test data
and computation of error bounds of the estimates in statistical terms. Actual test
field measurements of soil resistivity have been used as an application. The
bounds shown indicate the wide variability of soil resistivity.