Geotechnical Characteristics of Subsoil for Different Sectors of Islamabad
Geotechnical site investigations are essential in determining subsoil stratigraphy and soil strength and is considered mandatory for design of foundations. This study presents the generalized profiles for subsurface stratigraphy and insitu soil strength (average SPT N values) for different sectors of Islamabad on the basis of wide-ranging experimental work carried out by several agencies in fieldand laboratory testing carried out at the number of locations in the study area. Data from 208 geotechnical site investigations of Islamabad have been collected and subsurface profiling for those sectors is carried out that had more than four data points. The experimental data of the study area has shown potential for development of profile map for 11 different sectors of Islamabad using data of 144 geotechnical site investigations. Generalized soil profile and average SPT N values for each sector have been generated to a depth of 7m which is considered sufficient for lightly loaded structures with shallow foundations. Average SPT N value profile coupled with soil stratigraphy for each zone is established that can used to determine shear strength parameters and bearing capacity of soil using SPT based empirical correlations. The generalized soil profiles will be helpful during feasibility study and planning geotechnical site investigations for mega projects and can also be used to determine engineering properties of subsoil for small scale projects.
Adhami, N.Z., Ilyas, M., and Ahmad, M., , Seismotectonic studies of the Rawalpindi region: Islamabad, National Engineering Services of Pakistan (NESPAK) Limited, Pakistan Atomic Energy Commission, 139 p. (Undated, published about 1980).
Ahmad, M., Iqbal, Q., & Khan, F. A. (2013). Profiling and Zoning of Geotechnical Sub-soil data using Geographic Information System. Science International, 25(3).
Ahmad, Z, Ahmad, I., Akhtar, G., and Asim, S. (2005) “Seismotectonics and Seismic Hazard Analysis in Selected Area of Margala Hills, Islamabad” Pakistan Journal of Hydrocarbon Research Vol.15, (June 2005), p.65-72.
Ali. J, Bhatti A.Q, Khalid. M, Waheed. J and Zuberi. S,. “A comparative Study to Analyze the Effectiveness of Shear Walls in Controlling Lateral Drift for Medium to High Rise Structures (10 – 25 Storeys)” in Proc. 2015 2nd International Conference on Geological and Civil Engineering, IPCBEE vol. 80 (2015) © (2015) IACSIT Press, Singapore, pp. 31-36, DOI: 10.7763/IPCBEE. 2015. V80. 7.
Arshid, M. U., Shabbir, F., Hussain, J., Elahi, A., Ahmed, A., & Tahir, I. K. (2013). Assessment of Variation in Soil Parameters, For Design Of Lightly Loaded Structural Foundations. Life Science Journal, 10(12s).
BCP (2007), “Seismic Provision for Building Code of Pakistan”, Ministry of Housing and Works Government of Pakistan, Islamabad.
Kamal M.A., Arshad, M.U., Khan, S.A. and Zaidi, B.A (2015) “Appraisal of Geotechnical Characteristics of Soil for Different Zones of Faisalabad (Pakistan)” Pak. J. Engg. & Appl. Sci. Vol. 17, Jul., 2015 (p. 1–10)
Suwanwiwattana, P., Chantawarangul, K., Mairaing, W., & Apaphant, P., “The development of geotechnical database of Bangkok subsoil using GRASS-GIS,” 2001, November, pp. 5-9.
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ISSN (Print): 2070-9900 ISSN (Online): 2411-6319