In Fig. 10 are shown the three principal bonds in brickwork. In (a) is shown English bond, consisting of alternate courses of stretchers and headers. The longitudinal bond is obtained by means of either one-quarter bats, as shown, or preferably by three-quarter bats. This bond is probably the strongest and best one, although not much used. In (b) is shown Flemish bond, consisting of alternate headers and stretchers in the same course. The lap is obtained by use of three-quarter bats, with quarter, half, and three-quarter interior closers. In (c) is shown the ordinary bond, which consists of 5 or 6 courses of stretchers to each course of headers. This bond is not as strong as the first two named, as there is a continuous vertical joint extending between the header courses.

From (a) to (i), Fig. 11, are shown methods of bonding face brick to the backing in both solid and hollow walls; also of bonding terra-cotta furring to walls. At (j), (k), and (I) are shown methods of joining old and new walls; (j) shows a vertical groove cut in the old wall to form a sliding joint with the new wall; (k), a 2" X 4" piece spiked to the old wall for the same purpose; and (I), a steel-tie bond (also adapted for bonding face brick).

In Fig. 12 are shown methods of tying face brick to the woodwork in brick-veneered walls by means of steel ties, etc.

Bonds In Brickwork 303

Fig. 10.