Copyright Goodheart-Willcox Co., Inc. Chapter 12 Laying Brick 241 12.3.5 Laying a 12″ Common Bond Solid Wall with Leads A 12″solidwallisessentiallyan8″solidwallwithathird wythe added. The first course is repeated every sixth or seventh course. It contains three-quarter closures, quarter closures, stretchers, and headers arranged in a particular configuration. See Figure 12-49. Headers are visible on the outer face of the wall. The second course is composed of stretchers, headers, and quarter closures. See Figure 12-50. The stretchers are visible on the outer face, and headers show on the inside. The quarter closures are generally placed after the headers and stretchers are laid. The third course is composed of all stretchers. See Figure 12-51. This pattern is continued for the fourth 6. Lay the second course following the layout shown in Figure 12-48. Level, align, and plumb the course. Notice how the intersecting wall is interlocked with the outside wall. 7. Locate the metal Z ties as shown in the second course layout plan in Figure 12-48. Embed the metal ties in a mortar bed and lay the third course identical to the first. Metal ties will be added again on the eighth course in the wall. 8. Continue laying courses, alternating the pattern used in the first and second courses until the wall has reached eight courses high. You may want to build end wall leads to serve as guides for the wall. 9. Level and plumb the completed wall. 10. Clean off any mortar splatter. 11. Tool the joints with a concave jointer when the mortar is thumbprint hard. Tool the bed joints first, then the head joints. Use a sled jointer for the bed joints. 12. Remove any mortar tailings (residue) remaining after finishing the joints. Clean the wall by brushing with a bricklayer’s brush. and fifth courses in typical running bond. The sixth course is identical to the first as the process is repeated. Twelve-inch brick masonry walls are rare today but may be used as thermal storage units. Solid, dark col- ored brick should be used for this application, since solid brick provides more mass than hollow or cored brick and dark brick absorbs heat more efficiently than lighter colored units. 12.3.6 Corner Layout in Various Bonds Laying up a corner is similar for most bonds. After build- ing several of the more common bonds, a mason should have no difficulty raising any corner. In addition to the common bond, the bonds described in the following sec- tions represent some of the most frequently used patterns. Flemish Bond The popular Flemish bond is easy to lay and produces a visually interesting and pleasing wall. It is more costly than the common bond and requires careful work- manship. The bond consists of alternate headers and stretchers in each course. The headers are centered on the stretchers between each course. Bonds may be started at the corner with either a 3/4 closure or a 1/4 closure. See Figure 12-52. Stretchers Headers Three-quarter closures Quarter closures First Course Goodheart-Willcox Publisher Figure 12-49. The first course of 12″ common bond solid wall. Second Course Stretchers Headers Quarter closure Header Stretchers Goodheart-Willcox Publisher Figure 12-50. The second course of 12″ common bond solid wall. Stretchers Third Course Goodheart-Willcox Publisher Figure 12-51. The third course of 12″ common bond solid wall.