A vertical post supporting a window frame or doorway - the side of a doorway or window frame. The jambs of the portals of Romanesque and Gothic churches are frequently decorated with figure sculpture KEYSTONE - A voussoir i.e. a wedge-shaped or tapered stone placed at the top of an arch or vault. In vaulting it occurs at the intersection of the ribs of a ribbed vault LECTERN - A reading desk in a church for the reading of lessons
An upright piece forming the side of an opening, as in a fireplace; also a projecting columnar part, as in the side piece of a fireplace or mantel; more specifically, the part of a fireplace or mantel which holds up or supports the frieze and shelf
One of a pair of vertical posts or pieces, that together form the sides of a portal, which often contains sculptures (fig.3, G). The individual columns can also be referred to as jambshafts, which often support an arch or vault. From the Old French jambe for "pier" or "sidepost of a door."
The vertical piece or pieces forming the side of a doorway or window. In Romanesque and Gothic churches, these supports were slanted or splayed outward to increase the impression of thickness in the walls and to provide space for sculptural decoration.
Wooden structure bordering a door or window. The jamb includes two sides, a top and a bottom (threshold or sill). A door or window is attached to the jamb with hinges, if the unit is operable. Otherwise it is fixed with wooden stops. Fixed glass or panels can be fixed in the jamb without a door or sash frame.
The vertical component of a door frame. Different types include the hinge jamb, upon which the hinges are attached, the strike jamb, upon which the strike is installed, and a blank jamb, which is not prepared for either a hinge or a strike plate.
THE VERTICAL SURFACES DEFINING AN OPENING FOR A DOOR OR WINDOW. THE HORIZONTAL TOP PIECE IS THE "HEAD". THE HORIZONTAL WINDOW BASE IS THE "SILL". JAMBS NEED TO BE PLUMB AND SQUARE, THE HEAD AND SILL SHOULD BE LEVEL.
The vertical main frame members. The "jamb" is usually the longest, heaviest and most expensive extrusion in a hung window, therefore extreme care must be taken in purchasing, handling, cutting, and fabricating lengths for production.