In placement of bricks, a stretcher course is arranged how?

A stretcher course is characterized by bricks that are laid with their long sides exposed, meaning they are arranged end to end. This orientation is essential for providing a strong and stable wall structure, as it increases the surface area that is in contact with the mortar, enhancing the bond between bricks.

The end-to-end arrangement allows for better load distribution and structural integrity, making it a common practice in brickwork. This method is also integral to the aesthetic qualities of brick construction, leading to a uniform and visually appealing surface.

In contrast, the other methods do not fulfill the criteria for a stretcher course. Bricks placed vertically on end or with ends facing out do not provide the same contact area and are typically used for different types of courses, like header courses, which are vital in adding structural features such as arches or for decorative purposes. Similarly, a horizontally staggered arrangement usually refers to how rows of bricks are aligned in relation to one another to enhance wall strength but does not define how a single stretch of a course is laid.