- All Journals
- Al-Qadisiyah University
- Basrah University
- Kirkuk University
- Mosul University
- The Iraqi Borad for Medical Specialization
- University of Anbar
- University of Technology
- Al Mustafa University
- Al-Zahraa University for Women
- Alnoor University
- Kunooz University
- Misan University
- Ninevah University
- Tikrit University
- University of Al-Hamdaniya
- University of Kerbala
Determination of the Adequate Thickness of Granular Subbase Beneath Foundations | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 29, Issue 9, 2011, Pages 1845-1869 PDF (503.08 K) | ||
| DOI: 10.30684/etj.29.9.18 | ||
| Authors | ||
| Mohammed Y. Fattah; Falah H. Rahil; Mohammed A. Turki | ||
| Abstract | ||
| Where the native soils have poor structural qualities or are expansive, the soil investigation report may recommend importation of soils better suited to providing a subbase for structures. This requires considering two soil layers in bearing capacity calculations. Calculation of the ultimate bearing capacity of shallow footing on a two layered system of soil depends on the pattern of the failure surface that develops below the footing. For a weak clay layer overlaid by a top dense sand layer, previous studies assumed that the failure surface is a punching shear failure through the upper sand layer and Prandtl's failure mode in the bottom weak clay layer. In this paper, the bearing capacity of subbase layer underneath by a soft clay layer is investigated. The properties of the subbase material are measured in the laboratory. Design charts were obtained which can be used to select the suitable thickness of the subbase layer for a design allowable bearing capacity. | ||
| Keywords | ||
| bearing capacity; granular subbase; THICKNESS; Soft clay | ||
|
Statistics Article View: 387 PDF Download: 293 |
||