Designers or owners who want brick as a facing material on buildings with structural steel or reinforced concrete frames have several choices. The newest alternative, called reinforced brick cladding or reinforced veneer, works on some of the same principles as panelized brick, but is designed to be built in the field, not in a factory. This can be an advantage where prefabricated panels are ruled out because of cost, availability, or logistical considerations on the jobsite. Cladding is built using hollow brick, vertically and horizontally reinforced with steel as needed to resist the design loads, and fully grouted. The reinforcement and grout add tensile strength to the masonry and greatly increase the spacing allowed between points of attachment to the backup structure. The cladding is supported on shelf angles that are welded to a framework of structural steel tubes or angles connected to the building frame. The shelf angles are typically located at window heads and support the masonry up to the window sill above. Masonry contractors who have built reinforced cladding projects see the system as a high-performance masonry option that can compete with other engineered curtain-wall systems, such as stone, glass, and metal panels. Though the system can be built by anyone with a good grasp of reinforced masonry and a ready supply of hollow units, experienced contractors say working closely with a structural engineer is important.