Spatial Variation of Soil Properties: Foundation Design Challenges

Abstract

The spatial variation of soil properties with specific reference to their coefficient of variation (COV), and their effect on deep foundation designs, is discussed. The difficulties in developing strength factors (Φ) for lateral load response governed by multiple resistance variables are examined. Classical and current analytical and experimental state of the art is described. Influence of amended topsoils on shear and cohesion is also examined. Finally, suggestions for determining nominal strength factors and future extension are made.

Development of geotechnical properties geo-database for soil in Kano metropolis to enhance building construction

“…Lower ultimate bearing capacity is found around Gwale LG, ranging from 228 to 392kN/m 2 . These results are in line/agreement with published data[36,37].Figure 13: Spatial variation of allowable bearing capacity at 2.0 -2.1m depthThe allowable bearing capacity at 1.5 and 2.0 -2.1m depths are presented in Figures14 and 15. The trend of allowable bearing capacity is similar to that of ultimate bearing capacity.…”