PHDtheses :Petroleum

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    GEOTECHNICAL INVESTIGATION AND FOUNDATION RECOMMENDATIONS FOR JEDDAH CITY THE KINGDOM OF SAUDI ARABIA
    (Neelain University, 2008) SOLEIMAN HASSAN KODEIH
    This thesis presents the findings of the geotechnical investigation of the subsurface conditions that have been conducted for the Jeddah City that located at the central western sector of The Kingdom of Saudi Arabia. The work was carried out to fulfill the requirements ofdoctorate degree in Engineering Geology for Jeddah area in Saudi Arabia by Al Neelain University — Graduate College -, Sudan. The field investigation was performed from October 05, 2005 through March 14, 2007. The field investigation work was carried out by mainly drilling fifty one (51) boreholes distributed at six (6) zones depending on the type of subsurface formations encountered. The zones locations are as follow: 0 Zone l: north west of Jeddah 0 Zone 2: central north east of Jeddah 0 Zone 3: south west of Jeddah Q Zone 4: central south of J eddah v Zone 5: east of Jeddah I Zone 6: central north of Jeddah Generally, Residual soil was encountered at the area of zone two and zone four and coralline formations was found at the location of zone one, three and six. Rocky formation was encountered at the area of zone five at the eastern sector of Jeddah area. The residual soils are composed of brown to light brown, medium dense to very dense, silty or clayey sand with gravel and/or some cobbles and located at the eastern sector before the mountain area (zone 5)