الفهرس 
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Abstract
This study deals with the problem of buildings settlement due to consolidation of fine-grained soils taken into consideration the drainage conditions. Soil consolidation settlement under foundations often causes serious damages to various civil engineering structures such as building foundations, pavement, hydraulic structures and underground structures.
For the proposes of the present study, fine soil samples were collected at variant depths from four different sites in El-Qalubia governorate, Egypt. A laboratory study was performed to investigate the effect of drainage conditions (1-D, 2-D and 3-D) on consolidation parameters of fine soil. Four of natural undisturbed soil samples were collected and prepared by pressing the manufactured rings into the foundation soil layers. The geotechnical properties were determined, and consolidation tests were performed by using modified oedometer apparatus at different drainage condition (1-D, 2-D and 3-D).Consolidation parameters such as coefficient of compressibility (av), coefficient of volume change (mv), compression index (cc), swelling index (cs), coefficient of consolidation (cv) and coefficient of permeability (k) were determined. Then, all obtained results and relationships are analyzed and discussed. The obtained results considerable the variation between the consolidation parameters for tested drainage boundries 1-D, 2-D and 3-D. Also, data-fit software was used to correlate the relationships between the coefficient of consolidation and coefficient of volume change.