Title: Reversed horizontal cyclic loading tests of flat slab specimens with studs as shear reinforcement Running head: Experimental study Author 1 (corresponding author): Brisid Isufi Ph.D. Student Department of Civil Engineering, Faculty of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal [email protected] Full contact details of corresponding author: Name: Brisid Isufi Address: Universidade NOVA de Lisboa, Faculty of Science and Technology, Department of Civil Engineering, Quinta da Torre, Campus Universitário, 2829-516 Caparica, Portugal; Telephone: +351 932285562; email: [email protected] Author 2: António Manuel Pinho Ramos Assistant Professor CERIS, ICIST, Department of Civil Engineering, Faculty of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal [email protected]