PART G - WINDOW AND DOOR OPENINGS
As the bricklaying proceeds, you must leave openings for windows and doors in the wall. Determine the
distance from the foundation to the bottom of the window sill. The height of the wall to the top of one
full course must equal that distance (Figure 3-27). Do not count the tilted rowlock (the row of bricks
laid on the edge) as a course; it is part of the sill.
3-22. Window Openings. When you know the distance from the foundation to the bottom of the
window sill, you can determine how many courses are required to bring the wall up to that height. For
example, if the sill is 4 feet, 4 1/4 inches above the foundation using 1/2-inch mortar joints, you will
need to lay 19 courses before you reach the bottom of the sill (Table 3-2, page 3-19).
Figure 3-27. Constructing a window opening
3-23. Placing and Bracing the Frame. Place the window frame on the rowlock course as soon as the
mortar has set. You must brace the window frame until the brick work has been laid up to about one-
third the height of the frame (Figure 3-28).