Copyright Goodheart-Willcox Co., Inc. Chapter 12 Laying Brick 239 First course Second course A A A B C A = Three quarter B = Bat C = Closer Goodheart-Willcox Publisher Figure 12-46. An 8″ common bond wall lead with first and second courses shown in detail. Goodheart-Willcox Publisher Figure 12-47. The first stretcher course and leads for the corners are in place in this 8″ common bond wall. The wall is constructed between the leads.