Enhancing the Ability of The Square Footing to Resist Positive and Negative Eccentric Inclined Loading Using an Inclined Skirt

Laboratory model tests were performed to investigate the behavior of shallow and inclined skirted foundations placed on sandy soil with R.D%=30 extent impact positive negative eccentric-inclined loading effect them. To achieve experimental tests, it was used a box (600×600) mm cross-sectional 600mm in height square footing (50*50) 10 thickness attached skirt Ds=0.5B various an angle (10°, 20°, 30°). The results showed that using skirts leads significant improvement load-carrying capacity decreased settlement. In addition, when increased, ultimate load improved. Load-carrying increasing eccentricity inclination. For inclination (Beta) 15° changed from e=0.15B e=0.05B, percentages (323.2 263%) (214 220%). settlement reduction factor (83 78%) (62 58%) for loading, respectively. Also, result reducing soil-bearing is more than negative. Increasing increases percentage decreases case load. Increased will increase Improvement (IR). When increased 10° 30° improved foundation angles 5°, 10°, 15°, (IR) (2.53, 2.51, 2.4) (3.45, 3.65, 3.97) (2.43, 2.58, 2.54) (4, 4.63, 5.3) both respectively 34% 27% all cases. significantly