Block Dimensions Guide the Footing Layout AD
Figure 1. Batter boards and string guide the footing layout. Here, top of slab determines top of footing (A), positioned to allow for two courses of block and two courses of brick. Strings set at the exact center of the wall guide the placement of vertical rebar, every 40 inches, in the wet footing (B). After the footing sets, new strings placed along the out- side edge of the wall guide the location of the cor- ners, which the author transfers with a laser (C). Careful layout pays off when the block is laid and the reinforcing is centered in the cores (D).
NOVEMBER 2006 I JLC I 3