Receding Planes.—(See Plane.)
Recess.—A sinking in a building deeper than a mere panel.
Recessing.—Forming one or more recesses. Throwing back some part of a building behind the general face.
Renaissance.—The art of the period of the Classic revival which began in the sixteenth century. In this volume used chiefly to denote the architecture of Europe in that and the succeeding centuries.
Rib (in Gothic vaulting).—A bar of masonry or moulding projecting beyond the general surface of a vault, to mark its intersections or subdivide its surface, and to add strength.
Ridge.—(1) The straight line or ornament which marks the summit of a roof; (2) the line or rib, straight or curved, which marks the summit of a vault.
Roll.—A round moulding.
Rose Window.—A wheel window (which see).
Rubble.—Rough stonework forming the heart of a masonry wall; sometimes faced with ashlar (which see), sometimes shown.
Rustication (or Rusticated Masonry).—The sort of ornamental ashlar masonry (chiefly Classic and Renaissance) in which each stone is distinguished by a broad channel all round it, marking the joints.