A Structural Curtain Wall system is an outer covering of a building in which the outer walls are non-structural, but it’s usually aluminum-framed wall and Glass wall. curtain walls are lightweight aluminum-framed facades housing glass or metal panels. These glazing systems don’t support the weight of a roof or floor. Instead, gravity loads and wind resistance transfer from the surface to the building’s floor line. A curtain Wall is design to protect air & water Infiltration, Seismic Force on the building and It’s carry dead load. Actually, it’s designed the Aluminum Member. Design multiple span floor to floor. It’s consideration for design requirement such as thermal expansion and contraction. Thermal expansion can be protect heating and coaling.