Architectural terrace door &acircu0080u0094 a door primarily used for terrace access in high-rise applications/buildings.Note: Architectural terrace doors consist of one or more glazed panels contained within one master frame. The operable panels will be hinged on either jamb and can swing either to the exterior or interior (not both). The door is not used as a primary entrance door because of the nature of the sill/threshold design used to meet performance requirements.
Awning, hopper, projected window &acircu0080u0094 a window consisting of one or more sash hinged at the top or bottom which project outward or inward from the plane of the frame. An awning rotates about its top hinge(s) and projects outward. A hopper window rotates about its bottom hinge(s) and projects inward. So let us take a look at 34 photos door and window grill design below.
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British thermal unit (Btu) &acircu0080u0094 the heat required to increase the temperature of 1 lb. of water 1&Acirc&degF.