Correction to: Geo-Engineering (2017) 8:4 https://doi.org/10.1186/s40703-017-0042-2

After publication of this article [1] it came to our attention that the affiliation of Mohamed Elsawy was incorrectly shown. His affiliation should have been given as Department of Civil Engineering, Faculty of Engineering, University of Aswan, Aswan 81542, Egypt, with Department of Civil Engineering, Faculty of Engineering, University of Tabuk, Tabuk, Saudi Arabia as his present address.