ABSTRACT
Brick or stone arches over windows or doorways, in a variety of geometrical shapes, can only now be seen mainly on older-type buildings. Present-day design favours straight lines for various reasons, including visual simplicity, cost, and structural requirements in relation to new materials and design. Curved arches in domestic buildings have been replaced mostly by various types of lightweight, galvanized, pressed-steel lintels as shown in Figure 15.1(a).
