This section is from the book "Modern Buildings, Their Planning, Construction And Equipment Vol1", by G. A. T. Middleton. Also available from Amazon: Modern Buildings.
22 1/2" wall.
Fig. 88. 27" wall.
Reveals of 4! inches projection and 4 1/2 inches in width are perhaps more often used than any others, and the method of forming them is shown in Fig. 88. The method is the same in every case, save for slight modifications. In one course the projecting reveal is formed by means of a half-brick. Next this half-brick is a king-closer, splayed from 4 1/2 inches in width at one end to 2 1/4 inches at the other end, the smaller end being laid flush with the face of the wall. Another similar king-closer is now laid beside the former one, with its larger end flush with the face of the wall, and the course is continued with headers on the face of the wall to the required length. This completes one course of a 9-inch wall. If the wall is more than 9 inches thick the internal jamb is completed by laying stretchers along the face of the internal jamb to the required thickness. A queen-closer is placed next to the scontion or internal corner brick, and continued to meet the king-closer. The wall is then continued in the usual manner of walls in English bond.
There are slight modifications to this system of bonding reveals which occur in the case of walls of an odd number of half-bricks in thickness when it is impossible to make all the bricks forming the internal jamb stretchers. Bats must be used in such cases, and it need scarcely be remarked that to use a three-quarter-bat instead of a half-bat and a 4 1/2-inch queen-closer makes a stronger job. These bats are always laid along the ends of the king-closers (see the 22i-inch wall in Fig. 88).
The next course is formed by laying a stretcher along the face of the wall with one end flush with the reveal of the half-brick in the course below, when the internal jamb is finished precisely in the same manner as a stopped end, and the wall is continued as a wall in English bond (see Fig. 88). This method of bonding 4 1/2-inch reveals may be seen at a glance from Fig. 89, in which the shaded portions represent the arrangement common to every case, while the bricks left white indicate the manner of building walls over 9 inches thick, save for the obvious modifications mentioned above.
Reveals of 4 1/2 inches projection and 9 inches in width are sometimes used in walls of one and a half bricks or more in thickness. The method of forming these is as follows: In one course the reveal is formed by laying a brick as a header to the face of the wall, next to this is placed a 9-inch queen-closer; while the internal jamb is formed by laying a king-closer with its smaller end abutting against the internal end of the queen-closer; and if the wall is more than two bricks in thickness the internal jamb is finished with stretchers laid along its face if the walls be an even number of half-bricks in thickness (Fig. 90), and with stretchers and bats if the wall be an odd number of half-bricks in thickness.
22 1/2" wall.
Fig. 90. 27"wall.
A header is laid next to the external queen-closer, and a king-closer is placed next the former king-closer. A queen-closer is placed next the scontion brick, and the wall is then continued after the manner of walls in English bond. In the next course the reveal is formed by laying two bricks as stretchers to the face of the wall, the internal one being bevelled from one corner at 45 degrees, and mitred with a similar brick, which later forms part of the internal jamb. The remainder of the jamb is formed as a stopped end, the wall is continued as a wall in English bond. The facts common to rebated jambs with 9-inch reveals are clearly shown by the shaded bricks in Fig. 91, while the bricks left white show how the walls are built when they exceed two bricks in thickness.