An experimental study of the effect of silt and influence of cell confinement on the bearing capacity of circular footings on silty sand was carried out. Laboratory experiments on clean sand and sand containing silt up to 25 % were performed. Cells with different heights and diameters were used to confine the silty sand. The effect of proportion of silt in sand, cell diameter, cell height and t...

Most of Iraqi soil is classified as Quaternary deposits, especially in the Mesopotamian plain and tributaries of the River Tigris. Soil varies from north to south of Iraq. These differences in soil affected the process to select the suitable type of foundation. This research is to study the effect of bearing capacity on shallow foundations in different regions of Iraq. Seventy nine samples were...

As known, in a Winkler type of analysis the soil medium underneath foundation is violently replaced by row parallel springs having constant ks. For effective calculation latter, which called modulus subgrade reaction, two elastic constants (the modulus, E and Poisson’s ratio, ν) must be known. Although for homogenous soils this generally seems not to problem, same does stand stratified mediums ...

Progressive failure is common in many natural clays of strain-softening behavior and may affect the bearing capacity foundations placed on such soils. The progressive might be insignificant for small structures where mobilized strains are generally uniform within failed soil mass. This places a demerit to applications knowledge obtained from physical model tests prototype. study aims understand...