Red Seal Bricklayer Practice Exam

The technique for achieving a flush mortar joint involves raking out the joints while the mortar is still wet. This method allows for the excess mortar to be removed, resulting in a smooth, even surface that is level with the faces of the bricks. Raking the joints while wet is crucial because it ensures that the mortar is still pliable, making it easier to create a tight, compact joint and avoiding any potential cracking or unevenness that could occur if the mortar is allowed to fully harden.

When the mortar is raked out while still wet, it helps maintain the bond and appearance of the joint, contributing to the overall aesthetics of the masonry work. This technique is widely used by masons to create a clean finish, leading to a professional-looking wall.

The other options involve methods that either do not achieve a flush joint or compromise the integrity and appearance of the mortar joint. For instance, applying mortar before brick placement would not yield a flush finish since the bricks would cover any excessive mortar. Striking the joints only after they dry can lead to issues with cracking or improper shaping, while turning bricks upside down does not relate to achieving a flush joint at all. Each of these alternatives would not produce the desired effect of a flush mortar joint like r