Elkasabgy, M.A., and El Naggar, M.H. 2014. Axial compressive response of large-capacity helical and driven steel piles in cohesive soil. Canadian Geotechnical Journal, Vol. 52: 224-243. Elkasabgy, M., and El Naggar, M.H. 2013. Dynamic response of vertically loaded helical and driven steel piles. Canadian Geotechnical Journal, (50)5: 521-535. Elkasabgy, M., El Naggar, M.H., and Sakr, M. 2011. Field and theoretical dynamic response of vertically loaded helical and driven steel piles. 14th Pan-Am Conference on Soil Mechanics and Foundation Engineering, October 2-6, Toronto, Canada. Elkasabgy, M., El Naggar, M.H., and Sakr, M. 2010. Full-scale vertical and horizontal dynamic testing of a double helix screw pile. 63rd Canadian Geotechnical Conference, Canadian Geotechnical Society, Sept. 12-16, Calgary, Canada. Khan, M.K., El Naggar, M.H., and Elkasabgy, M. 2008. Compression testing and analysis of drilled concrete tapered piles in cohesive-frictional soil. Canadian Geotechnical Journal, (45)3: 277-392. Elshazly, H.A., Elkasabgy, M. and Elleboudy, A.M. 2008. Effect of inter-column spacing on soil stresses due to vibro-installed stone columns: interesting findings. Geotechnical and Geological Engineering Journal, 26(2): 225-236. Elkasabgy, M. and El Naggar, M.H. 2007. Finite element analysis of the axial capacity of micropiles. 8th Inter. Workshop on Micropiles, International Society for Micropiles (ISM), Sept. 26-30, Toronto, Canada. Elshazly, H.A., Elkasabgy, M. and Elleboudy, A.M. 2005. Assessment of alterations to Ko during stone columns installation using test data and cavity expansion solution. Inter. Conf. on Tsunami Reconstruction with Geosynthetics – Protection, Mitigation and Rehabilitation of Coastal and Waterway Erosion Control, Inter. Geosynthetic Society (IGS), Dec. 8-9, Bangkok, Thailand. Lateral Vibration of Helical and Driven Steel Piles Installed in Clayey Soil