size. As may be seen in the figure, the results are inconsistent although there 

 may be a slight trend toward greater settlement at a particular pressure for 

 larger plates. 



In summary, test Series I indicated a definite increase in settlement 

 with plate size at constant pressure, test Series III indicated no size effects, 

 and test Series IV was inconclusive. It is felt that these relations may be 

 attributed to the variation of soil parameter depth distributions from site 

 to site. 



In the following sections a scheme for correlating the results of in-situ 

 plate bearing tests with those of laboratory tests on core samples will be pre- 

 sented, and an empirical procedure for predicting settlements will be developed. 



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Plate Settlement (inches) 

 Figure 13. Bearing pressure versus plate settlement, indicating lacl< of plate 

 shape effect, Series III. 



CORRELATION OF TEST DATA 



Theory 



In order to gain a better understanding of the physical processes 

 governing the results of these tests and to develop general techniques for 

 predicting immediate settlements of actual foundations, an attempt was 



16 



