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Most of Iraqi soilis classified as Quaternary deposits, especially in the Mesopotamian plain andtributaries of the River Tigris. Soil varies from north to south of Iraq. Thesedifferences in soil affected the process to select the suitable type offoundation. This research is to study the effect of bearing capacity on shallowfoundations in different regions of Iraq. Seventy nine samples were collectedfrom 23 boreholes at three different locations Mosul at the North, Baghdad atthe middle and Basrah at the south of Iraq. The samples were collected at varyingdepth between 1 to 24 m. They were subjected to the following testes: Atterberglimits, sieve and hydrometers, consolidation, direct shear, unconfinedcompression and the filed SPT test. The values of the bearing capacityparameters and c were obtained from the above tests. The results obtainedwere used in the application of the general equation of the bearing capacity.Then, the model of a building was designed two floors, with mat foundationtype using STAAD Pro software. The average values of bearing capacity in eachregion were applied in the program Mosul = 177 KPa, Baghdad = 125 KPa andBasrah = 84 KPa. In addition, the worst bearing capacity values were also usedfor the three regions Mosul = 77 KPa, Baghdad = 68 KPa and Basrah = 24 KPa.The results obtained from the average and worst bearing capacity indicated thatfor Mosul, we could use shallow foundation spread and mat used if there wasbasement for different areas and for buildings with many stories. For Baghdadregion, shallow foundation was more suitable for building not higher than fivestories. Finally, for Basrah region, shallow foundations were an appropriateselection, but for most areas deep foundation was the right choice.

KEYWORDS

Bearing Capacity, Soil, STAAD Pro., Laboratory Tests and Foundation

Cite this paper

Al-Taie, E. , Al-Ansari, N. and Knutsson, S. 2014 Effect of Bearing Capacity on Designing Foundations in Iraq Using STAAD Pro-v8i. Engineering, 6, 292-303. doi: 10.4236-eng.2014.66033.





Autor: Entidhar Al-Taie, Nadhir Al-Ansari, Sven Knutsson

Fuente: http://www.scirp.org/



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