![]() in height from 100 to 600 m. These structures require an impressive volume of work to design because of their challenging substructures (foundation and basement walls) and superstructures (core walls, shear walls, columns, beams, and slabs). 2 Marina Tower, Beirut, Lebanon 3 San Stefano Grand Plaza, Alexandria, Egypt 4 The St. Regis, Doha, Qatar 5 Burj al Gathafi, Tripoli, Libya |