ABSTRACT
Walls are assemblies of physical materials that are used to define spaces. They can be solid or hollow, short or tall, and transparent, translucent, or opaque. Most interior walls are essentially permanent, meaning that they are not intended to be moved. Ceiling-height walls are exactly that: walls that span from the floor to the underside of a ceiling whatever that ceiling might be. To build an interior masonry wall, masons come in and lay out the locations of the walls on the floor slab and they start setting individual blocks in mortar beds, filling in vertical joints as they go. In wood and metal stud walls, openings require sills, heads, and jambs. Jambs are usually double vertical studs, but sills and heads have to be added. Demountable wall systems usually consist of some sort of metallic framing and pre-finished wall panels that are clipped to the framing system with removable hardware.
