you should see the book:
"The Engineer and Ivory Towers" by Hardy Cross
"El ingeniero y las Torres de Marfil" by Hardy Cross
The original book is in English, but I can´t remember well the title in English. The Spanish version have good comentaries about this topic. It is...
Also you can find information about Shear Strenght Correlations in the paper title:
Manual of Estimating Soil Properties for Foundation Design by Kulhawy and Mayne
Electric Power Research Institute, Palo Alto California.
I am agree with Austim. For determine allowable bearing capacity you also need to know other soil properties. For you know if any correlation give trusable results, you need to know the hypotheses what is based the correlation. You need to know characteristics of the soil used to develop the...
you can looking for information about correlations with SPT in the books:
-Virginia Polytechnich Institute and State University
The Charles E. Via, Jr.
Depatment of Civil and Environmental Engineering
Center for Geotechnical Practice and Research
1)Performance and Use of the Standard...
Hi georam
Gross allowable bearing capacity means bearing capacity due all of the loads from surface to base of the foundation. This terms consider S.F., but settlements and new structure effect are not consider.
Net bearing capacity means the values of aditional loads due new building in the...