In this work, the comparison between the values of bearing capacity of soil
determined by two different methods, the first method is field plate load test and the
second method is several laboratory tests. The study find out that the allowable bearing
capacity estimated from the first method widely near from its value computed by second
method. Also this study confirm the probability of using Plate load test for estimating
soil bearing capacity for small jobs and shallow layer depth to avoid using
comprehensive soil investigation and economizing both cost and time. Empirical
relation ship for bearing capacity estimation achieved from the results of the two
methods by using stiff brown silty clay soil at Erbil governorate - north of Iraq.