Retraction: Sakr, M. (2015). “Relationship between Installation Torque and Axial Capacities of Helical Piles in Cohesionless Soils.” J. Perform. Constr. Facil. , 10.1061/(ASCE)CF.1943-5509.0000621, 29(6), 04014173 - Retraction Notice | RetractBase