METU – Department of Architecture Spring Seminars’17 Within the scope of Spring’17 Seminars of the Architecture Department of METU Faculty of Architecture, on 18 April 2017, Ali Faik Ulusoy, Mr. Cihat Uysal and Mr. Gürkan AKDOĞAN gave a seminar titled ‘Single Rise Free Surface Roof Constructions and Design Problems of Wide Surface Roofing’.