CE540. Foundations (ects: 7)

Categories of foundations. Foundation selection. Allowable soil stress: categories of shallow and deep foundations, selection of foundation depth, soil types, selection of foundation, allowable soil stress. 
Rigid central single footing: Bearing capacity, failure mechanisms, factor of safety. Stress distribution in the soil under the foundation, static analysis, bending check, shear and construction instructions. Plate test. 
Single footing with eccentricity: effect of external loads on the ground, loading transfer from the column at the base of the footing, the influence of compressibility of the soil in the eccentricity, rigidity of the column-pad footing, rigidity of stiff pad footing, rigidity connector beam, rigidity of soil, reduction factor of initial eccentricity, stress distribution in soil at the base of the pad footing. 
Spread footing and raft foundations: soil index, rigid spread footing, isostatic method of calculating the spread footing, method of continuous beam, Winkler assumption on the distribution of stress on the ground, calculation of spread footing on elastic soil. Spread footing drainage, raft foundations.
Pile foundations: types, installation procedure, single pile bearing capacity, side and base resistance, settlements, factor of safety, pile group efficiency.