Which type of joint is formed by pressing mortar into the seam between bricks?

The correct choice is the concave joint, which is formed by pressing the mortar into the seam between bricks and then tooling it to create a smooth, rounded indentation. This technique is effective for ensuring water drainage away from the wall, reducing the likelihood of moisture penetrating the joints. The round shape helps direct rainwater off the surface of the mortar rather than allowing it to pool.

In addition to its functional benefits, a concave joint also has aesthetic advantages, providing a finished look that is often preferred in masonry work. The deeper profile compared to other joint types can enhance the overall appearance of the brickwork.

Other types of joints, while they have distinct characteristics, do not involve the same process. For instance, a raked joint is one where the mortar is left recessed, creating a stepped or notched appearance rather than a rounded one. Weathered joints have a sloping top that helps deflect water but are not pressed into the joint, and struck joints are typically finished with a flat surface. Each of these techniques serves different purposes in both functionality and style within masonry construction.