Effects of tie beam length, width and overlap stress on settlement of foundations have been investigated. In this investigation square concrete footings have been used with dimensions (B × B × d) where (d) is footing depth and (B) is footing width (1, 1.5,2 m). Width of tie beam (b) has been taken equal to 0.25, 0.30, 0.40, 0.50 and 0.75 (m). Tie beam length (L) has been taken varying from B till 3B with same footing depth = 0.50 m. Effect of overlap stress on settlement as well as effect of tie beam width and length on settlement has been determined. Also, the efficiency of tie beam length and width has been obtained. An equation is presented to compute the overlap stress zone in case of existing tie beam. It is found that the settlement increases with increasing the length of tie beam which is clear after the effect of the overlap stresses zone. The width of overlap stress zone case of existing tie beam has been found to be equal to (1.6 -1.75) B. The settlement of footings decreases with increasing tie beam width. It is found that the settlement after the effect of the overlap stress zone increases with increasing the length of tie beam.
 Fenton, G.A., Zhou, H., Jaksa, M.B. and Griffths, D.V. (2003) Reliability Analysis of a Strip Footing Designed against Settlement. Applications of Statistics and Probability in Civil Engineering, 129.
 AL-Omari, R.R. and AL-Ebadi, L.H. (2008) Effect of Tie Beam on Settlements and Moments of Footings. The 12th International Conference of International Association for Computer Method and Advances in Geomechanics (IACMAG), Goa, 1-6 October 2008.
 Farrokhzad, F. and Jchoabbasti, A. (2011) Assessing the Load Size Effect in the Soil under Single Foundation Using Finite Element Method. International Journal of Soil Science, 6, 209-216. http://dx.doi.org/10.3923/ijss.2011.209.216
 Almasri, A.H. and Taqieddin, Z.N. (2012) Finite Element Study of Using Concrete Tie Beams to Reduce Differential Settlement Between Footings. Proceedings of the 13th WSEAS International Conference on Mathematical and Computational Methods in Science and Engineering, 112-116.
 Elsamny, M.K., Ibrahim, M.A., Elsedeek, M.A. and Farouk, M. (2012) Experimental Investigation on Settlement under Isolated Footings Connected with Tie Beam. Al-Azhar University Engineering Journal, 34.