Continuiing our alphabetical journey through architectural terms and concepts, “C” is for corbel. Architectural corbels are structural design features that are visible on the exterior of a building. Constructed of brick or stone, corbelling projects from the wall surface to carry the weight of the materials above it. Corbelling typically occurs over several courses with each brick or stone, overhanging the one below to resemble inverted steps. While corbelling techniques offer a high degree of artistic expression and aesthetic appeal, the details are governed by strict rules of engineering relating to slope gradients and depth of projection. Deviations from the rules can result in collapse unless steel reinforcing is introduced. To read more CLICK HERE for the full article on-line.