Framing for a basement window

The rough framing for basement windows, doors and other openings, as show in Figure 38, may be installed at the time the foundation wall formwork is erected. Measure and check the diagonals of the frames to ensure that the frames are square. The framing should be properly braced to keep the forms vertical and in place until the concrete has set.

Figure 38

Source : Canada Mortgage and Housing Corporation (CMHC)