A curtain wall is defined as then usually aluminium framed wall, containing in fills of glass , metal panels or this stone. The framing is attached to the building structure and does not carry the floor or roof loads of the building. The wind and gravity loads of curtain wall are transferred to the building structure, typically at the floor line. Curtain walls can be classified by their method of fabrication and installation into the following general categories. Stick systems and unitized(also known as modular) systems in the stick system. Curtain wall can also be classified as water managed or pressure equalized systems.The curtain wall often comprises one part of a building wall system. Curtain integration with adjacent elements such as other wall claddings, roofs and base of wall details is required for a successfull installation. The Curtain Wall System offers a reduced sightline for low to mid-rise applications wherever exterior glazing is desired. Complementing the potency of insulating glass, Curtain Wall is thermally improved by a nonstop thermal spacer interlocked among the vertical and horizontal pressure plates. a novel split vertical strip for straight-in installation of every bay, special perimeter members for simple anchorage, and therefore the choice to search install is achieved with screw spline assembly.